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Stainless steel balls are usually produced by stainless steel forging process. At present, the commonly used stainless steel balls are 3033120c and 440C< Compared with castings and forgings, stamping bearings are thin, uniform, light and strong. Stamping can produce other difficult to manufacture work pieces with stiffeners, ribs, undulation or flanging, so as to improve its rigidity. Because of the use of precision mold, the accuracy of the workpiece can reach micron level, and the repeatability is high, the specification is consistent, and the hole socket and boss can be punched< After that, we remind you not to pay attention to the use of stamping. You can choose from tens of millions of products. We are specialized in selling precision bearing steel balls, 304 stainless steel balls, solid carbon steel balls, brass balls and wear-resistant steel balls. The trade safety of manufacturers is guaranteed. In the case of producing hundreds of stamping parts per minute, we can complete the processes of feeding, stamping, discharging and waste disposal in a short time, Personal, equipment and quality accidents often occur< According to the process and material, the stainless steel ball of ball mill can be divided into cast low carbon alloy stainless steel ball, medium carbon alloy stainless steel ball, high manganese stainless steel ball and rare earth chromium molybdenum alloy stainless steel ball; Forging low chromium cast ball, medium chromium cast ball and high chromium cast ball< What kind of stainless steel ball is better in the market now? Now let's analyze: good casting surface quality, good impact resistance, strong toughness, good wear resistance, not easy to break and out of round. It is to heat the metal to 1050 ℃ (plus or minus 50 ℃) and use the forging machine to exert pressure on the metal blank to produce plastic deformation, so as to obtain the forging with certain mechanical function, shape and size. Forging (casting and stamping) is one of the two major components. By casting, the defects of loose as cast metal in smelting process can be eliminated, and the microstructure can be optimized. At the same time, the mechanical function of forgings is generally better than that of castings of the same material because the complete metal flow line is retained. In the related machinery, the important parts with high load and serious working conditions are mostly forged except for the simple shape of rolled plates, profiles or weldments< In addition, the cast stainless steel ball must be made of wear-resistant materials, such as national standard 60Mn, 65Mn, or some self-developed wear-resistant alloy steel materials. We use the steel produced by the national super large steel plant, which is also a kind of material, and the quality produced in different steel plants is also different, and the quality of forgings depends on 80% of the quality of materials, For example, the use of high manganese steel, good impact resistance, toughness, wear resistance, not easy to break. Cast stainless steel balls are favored by many users because of their low price, economy and durability. For example, international mining giants Rio Tinto, BHP Billiton, and angulu gold all use cast stainless steel balls< The characteristics of casting production: the heated metal materials are forged into various shapes of tools, mechanical parts or blanks, which is called casting. Casting can change the internal structure of metal material, refine crystal and improve its mechanical function< It is necessary to use heating equipment, forging equipment and many auxiliary tools for casting production< The forging equipment mainly includes steam hammer, air hammer, die forging hammer, mechanical hammer, splint hammer, spring hammer, hammer, crank press, friction press, machine, reamer, roll forging machine, etc. Quality index of forged high chromium ball: chromium content & Ge; 0% and carbon content between 80% - 20% are called high chromium ball, the national standard requires high chromium ball hardness (HRC) must be & Ge; Above 58, the impact value is AK & Ge; 0j / cm if the hardness of high chromium ball reaches this level, it is necessary to adopt high temperature quenching and tempering treatment (at present, there are oil quenching and air quenching methods for high chromium ball quenching in China). If the hardness (HRC) is lower than 54, it means that the high chromium ball has not been quenched< Br > the quality index of medium chromium ball: the ball with 0% - 0% chromium content and 80% - 20% carbon content is called medium chromium ball, and the impact value is AK & Ge; 0j / cm national standard requires medium chromium ball hardness (HRC) to be & Ge; In order to ensure the quality of stainless steel ball, chrome ball should be tempered at high temperature (to eliminate forging stress). If the surface of stainless steel ball is dark red, it indicates that the product has been tempered at high temperature. If the surface of stainless steel ball is still metallic, it indicates that the product has not been tempered at high temperature< Br > the quality index of low chromium ball: the ball with 0.5% - 5% chromium and 80% - 20% carbon is called low chromium ball; Above 45, the impact value is AK & Ge; 5J / cm in order to ensure the quality of stainless steel ball, the low chromium ball should also be tempered at high temperature (to eliminate forging stress). If the surface of stainless steel ball is dark red, it indicates that the product has been tempered at high temperature. If the surface of stainless steel ball is still metallic, it indicates that the product has not been tempered at high temperature< Stainless steel ball is an important basic component, especially in precision industry, which plays an important role in the development of national economy. Under some special conditions, stainless steel balls of special materials are often needed to complete the functions required in different environments. In fact, some special stainless steel balls have been widely used in various fields of the national economy, professional sales of precision bearing balls, 304 stainless steel balls, solid carbon steel balls, brass balls, wear-resistant steel balls manufacturers, quality assurance, professional sales, timely supply, cost-effective, has become the preferred brand of many wire products, welcome to buy! Including stainless steel ball, copper, aluminum, titanium alloy steel and agate, glass, ceramic ball, etc. Their popularization and application not only promote the development of stainless steel ball industry, but also promote the technological development and improvement of related industries< Br > stainless steel ball is an important part of the bearing industry, and it is also a moving body widely used in the bearing industry. Its quality directly affects the bearing quality. The post production processes of stainless steel balls, such as automatic cleaning of stainless steel balls, automatic appearance inspection (automatic elimination of different products), automatic rust prevention, counting and packaging, are the key factors affecting the quality of stainless steel balls. The appearance inspection of stainless steel ball is an indispensable process in the process of stainless steel ball processing. The appearance inspection of stainless steel ball mainly includes surface scratch, rust, surface freckles and so on< The purpose of stainless steel ball is to reduce the friction of moving bearings or other parts during rolling. < br

>Stainless steel ball, as an important mechanical parts, its quality plays a vital role in the operation of machinery. The quality of stainless steel ball lies in the operation in the process of stainless steel ball sorting, the innovation and application of stainless steel ball sorting process, and the strictness of stainless steel ball sorting process, which all have an important impact on the quality of stainless steel ball products, and therefore affect the overall quality of stainless steel ball< Automation refers to the process in which a machine or device operates or operates automatically according to a specified program or instruction without interference. Automation can not only reduce the tedious manual labor in production, but also reduce the risk in dangerous working environment. Therefore, automation is widely used in social labor< Br > in the production process of stainless steel ball, due to improper operation, negligence of control in grinding process and other reasons, various kinds of injuries will be caused to the surface of stainless steel ball. Before the stainless steel ball leaves the factory for maintenance, it is often more painful to separate the injured stainless steel ball by manual selection, and the efficiency is also low, which easily causes visual fatigue of maintenance staff< Br > therefore, in the production process, a few more separation processes are added, which are not available in the traditional stainless steel ball production process. Strive to every process out of the ball is qualified, do not allow the injured ball flow to the next process. This kind of innovation greatly reduces the defect rate of stainless steel balls, and greatly reduces the work pressure of quality inspectors after manual selection, and can ensure the quality, and does not allow the stainless steel balls of different standards to flow into the hands of customers< At the same time, because automation is widely used in machining production, enterprises put forward higher and higher requirements for automation technology, which also provides the necessary premise for the innovation of automation technology. Since the 1970s, automation has developed to complex systems and advanced intelligence, and has been widely used in national defense, scientific research, economy and other fields to achieve more large-scale automation. Such as integrated automation system of large enterprises, urban traffic system, automatic command system, etc. In addition, the application of automation is expanding from engineering field to non engineering field, such as medical automation, economic governance automation, etc< The development trend of automation technology is the combination of systematization, flexibility and intelligence. The process of stainless steel ball production automation is not only the inevitable trend of stainless steel ball production industry, but also the necessary premise of stainless steel ball product quality assurance. Automation is widely used in industrial machinery manufacturing, which is a great contribution to the improvement of society. The stainless steel ball processing and manufacturing industry began at the end of last century, and gradually improved the processing technology, which made the stainless steel ball industry develop at a high speed. Because the scale and number of stainless steel ball industry continue to expand, it also began to enter the era of low profit. Because of the technological progress, the cost also rises, but the stainless steel ball itself as a micro spare part of mechanical equipment, has a certain range of value. With it comes a reduction in production costs. Professional sales of precision bearing balls, 304 stainless steel balls, solid carbon steel balls, brass balls, wear-resistant steel balls, manufacturers and other types of products are complete, best-selling at home and abroad, excellent equipment, long service life! Products wire products industry leader, welcome to inquire; Cutting corners & quot; Or & lt; Shoddy & quot;. The purpose is to maintain a favorable price advantage and keep the long-term development of the enterprise. But & lt; Cutting corners & quot; Phenomenon is not a viable long-term strategy. Now the market demand for stainless steel ball, quality and price need to have a competitive advantage. As a result, scientific energy saving measures are the competitive means of stainless steel ball manufacturing industry< Br > scientific selection of raw materials in the selection of raw materials for stainless steel ball production, material utilization must be considered. First of all, we need to reduce the intermediate links in the procurement process, directly facing the steel suppliers, so as to reduce the price cost of materials. In the selection of steel manufacturers, we must be aware that the price difference will have an impact on the quality, and choose the material manufacturers with high cost performance, in order to save additional resources< In manufacturing process, we should choose cemented carbide mold or mold with hardened surface. Better improve the wear resistance and fatigue resistance of stainless steel ball. In the cold heading process of stainless steel ball, the hard cutting tool is selected to effectively reduce the tolerance of stainless steel ball and save materials. And the service life of the die is prolonged. Reduce the cost in the production process< In the process of smooth grinding, hard grinding and grinding, the auxiliary grinding of stainless steel balls with auxiliary materials needs abrasive fluid. Scientific timing and quantitative analysis of grinding fluid Abrasives can save the cost of auxiliary materials and reduce the production cost of stainless steel ball as a whole< In today's highly competitive market environment, the stainless steel ball industry will be eliminated by reducing the price regardless of the quality. Only by continuously improving the quality and technology of stainless steel ball, scientifically reducing the production cost is the accurate direction and choice< Br > why only 80% stainless steel balls are added in the running in process of the ball mill? Because after the ball mill is installed, the big and small gears of the ball mill need to be meshed, and the processing capacity also needs to be gradually increased. After two or three days of normal continuous operation of the ball mill, check the meshing condition of the big and small gears. After everything is normal, open the ball mill inlet cover and add the remaining 20% stainless steel balls for the second time< Br > note: the addition of small stainless steel ball is only for secondary ball. Due to the friction between stainless steel ball and stainless steel ball, stainless steel ball and ore, stainless steel ball and lining plate of ball mill during normal operation of ball mill, the wear will be increased, so that the ball mill is small and medium ball mill is small. So usually under normal circumstances, there is no need to add a small ball. When the fineness of the grinding machine can not meet the flotation requirements, an appropriate amount of small balls can be added. The stainless steel balls in the ball mill are constantly worn in the process of operation. In order to maintain the ball load filling rate and ball ratio, and keep the ball mill free from disorderly operation, it is necessary to make up balls and reduce wear< Br > the weight of stainless steel ball is based on the quality of stainless steel ball, which determines the ore consumption per ton

In addition, new wear-resistant stainless steel balls are preferred. For example, the stainless steel balls forged by train wheel load with special output are particularly wear-resistant< Br > the processing technology of stainless steel ball should meet the scale requirements of the finished product, so that the stainless steel ball has the characteristics of long life, low noise, low friction and high reliability. Generally speaking, there are the following basic processing: small cycle processing technology is used for small stainless steel ball processing and production is not much< The large cycle process is used for the production of stainless steel balls with large quantity and high precision< The single disc multi groove process is used for grinding and finishing of quenched stainless steel balls with small batch size and high precision< Br > single plate single groove plus II process is used for the production of stainless steel balls with larger diameter< The single stainless steel ball processing technology is used to produce super large stainless steel balls< The processing technology of stainless steel ball varies with the raw material of the ball blank, the specification (size and precision grade) of stainless steel ball and the production premise, but the basic processing technology is roughly the same, There are usually the following kinds: small stainless steel ball cold heading - smooth ball - heat treatment - Surface Strengthening Treatment - hard grinding - Primary Grinding - finish grinding 1 - finish grinding 2 small stainless steel ball medium and large stainless steel ball cold (hot) heading or hot rolling - annealing (for hot heading or hot rolling) - smooth ball - heat treatment - Surface Strengthening Treatment - hard grinding - Primary Grinding - finish grinding 1 - finish grinding 2 large stainless steel ball material heating - Hot heading or hot rolling Rolling, annealing, polishing, heat treatment, surface strengthening, hard grinding, primary grinding, finish grinding, 1-finish grinding, 2 extra large stainless steel ball material heating, hot cutting, heating, hot upsetting, annealing, turning ring belt, smooth ball, heat treatment, hard grinding, primary grinding, finish grinding, 1-finish grinding, 2 extra large stainless steel ball material heating, hot upsetting (casting), annealing, turning ring belt, soft grinding (single grain), heat treatment, hard grinding (single grain) At the beginning of the year, stainless steel balls are usually produced by casting process. At present, the commonly used stainless steel balls are 3033120c and 440C. Definition: steel containing more than 12% chromium and resistant to chemical attack< Principle: stainless steel is not rusty, but not easy to rust. Professional sales precision bearing ball, 304 stainless steel ball, solid carbon steel ball, brass ball, wear-resistant steel ball manufacturers, safety, environmental protection, economy! Its principle is to form a layer of compact chromium oxide layer on the surface of steel by adding chromium element, which can effectively block the re contact between steel and air, so that the oxygen in the air can not enter into the steel, and achieve the effect of preventing steel from rusting< Classification: China National Standard (CNS), Japan Industrial Standard (JIS) and American Iron and Steel Association (AISI) use three digits to represent different stainless steels, which are widely quoted by industry offices. Among them, 200 series are chromium nickel manganese austenitic stainless steels, 300 series are chromium nickel austenitic stainless steels, and 400 series are chromium stainless steels (commonly known as stainless steel), including martensite and ferrite< Application: 302 stainless steel ball is widely used in auto parts, aviation, aerospace, hardware tools, chemical industry. Details are as follows: handicrafts, bearings, pulleys, medical instruments, connecting posts, electrical appliances, etc< Properties: 302 stainless steel ball belongs to austenitic steel, which is close to 304, but the hardness of 302 is higher, HRC & le; 28。 It has good anti rust and anti-corrosion properties< The stainless steel ball is an important basic part, especially in the precision industry, which plays an important role in the development of national economy. Under some special conditions, stainless steel balls of special materials are often needed to complete the functions required in different environments. In fact, some special stainless steel balls have been widely used in various fields of national economy, including 9cr13cr13 stainless steel, copper, aluminum, titanium alloy steel, agate, glass, ceramic balls, etc. Their promotion and application not only promote the development of stainless steel ball industry, but also promote the technological development and improvement of related industries. Here is a brief introduction of the factors affecting stainless steel ball< The influence of microstructure of stainless steel ball: the density of martensite, austenite, bainite, ferrite and other different crystal structures is also different, which also affects the crystallinity< Br > material influence: stainless steel ball, cast iron ball, alloy stainless steel ball, etc. the density of different materials is different, the density of steel is larger than that of cast iron, and alloy steel is different according to the density and content of main alloy elements< The influence of stainless steel ball manufacturing: the structure of rolled and forged stainless steel balls is dense, so the density is high; the structure of forged cast stainless steel balls, cast iron balls or forged alloy balls is not very dense, and even there are pores in them, so the density is lower< Br > the rotating body of ball mill is in contact with the bearing under the condition of its own gravity and the combined action of the material left in the cylinder and the gravity of stainless steel ball. Therefore, there are two main parts to apply the load, one is the gravity of the revolving body itself, the other is the pressure exerted on the cylinder by the material and stainless steel ball in the cylinder under the action of gravity. The revolving body of ball mill is in contact with the bearing under the condition of its own gravity and the combined action of the material left in the cylinder and the gravity of stainless steel ball. Therefore, there are two main parts to apply the load, one is the gravity of the revolving body itself, the other is the pressure exerted on the cylinder by the material and stainless steel ball in the cylinder under the action of gravity< The stainless steel ball and material in the cylinder can be regarded as some kind of equivalent equal density body, and its upper surface is horizontal, and its positive pressure on the cylinder wall is proportional to the depth of the material layer. In this way, the weight of stainless steel ball and material can also be discretized into the pressure value of corresponding unit area< When the total weight of material and stainless steel ball is 400t and the loose specific gravity is 5t / m, the material depth h = 0.6285m can be calculated< Br > in order to apply variable surface load on the cylinder, a layer of surf15 element is established in the area where the cylinder is subjected to material and stainless steel ball, which can be used for various variable loads and surface effects. Then, a pressure load is applied to surf154 element, and the pressure value is proportional to the height of the node in the action area in the coordinate (here refers to the Cartesian coordinate system). set up

When the depth of the material is zero, the pressure on the node is zero, and the scale coefficient is K< As mentioned earlier, there is no liner for the cylinder and end cover, bushing and fixed ring inside the hollow shaft in the solid modeling. Therefore, in order not to affect the calculation of the stainless steel ball, the weight of the liner should be added to the cylinder and end cover according to the equivalent density when the gravity load is applied, The weight of bushing and fixed ring inside the hollow shaft is added to the hollow shaft according to the equivalent density to realize the gravity compensation. The equivalent density is as follows: the weight of the cylinder (including the corresponding liner) is 147t, the volume is 4704m, so the equivalent density is 15522kg / m3( The density of raw cylinder material is 7850kg / M < br > each end cover (including the corresponding liner) weighs 45t, and the volume is 377m, so the equivalent density of stainless steel ball is 13770kg / m3( The density of the original end cover material is 7850kg / M < br > the stainless steel ball hollow shaft (including fixed ring, feed bushing, discharge bushing, etc.) is 94t, and the volume is 528m, so its equivalent density is 14400kg / m3( The density of the original hollow shaft material is 7850kg / M < br > the influence of material density: stainless steel ball, cast iron ball, alloy stainless steel ball, etc. the density of different materials is different, the density of steel is higher than that of cast iron, and alloy steel is different according to the density and content of main alloy elements< The influence of stainless steel ball manufacturing: the structure of rolled and forged stainless steel balls is dense, so the density is high. The structure of forged cast stainless steel balls, stainless steel balls, cast iron balls or forged alloy balls is not very dense, and even there are pores in them, so the density is lower< The influence of microstructure of stainless steel ball: the density of martensite, austenite, bainite, ferrite and other different crystal structures is also different, which also affects the crystallinity< Br > influence of chemical elements: due to different chemical components such as iron, carbon, chromium, manganese, sulfur and phosphorus, the hardness and impact wear of stainless steel balls are affected to varying degrees. Generally speaking, all kinds of precision bearing balls, 304 stainless steel balls, solid carbon steel balls and brass balls are provided to individuals and enterprises all over the country for a long time, Wear resistant steel ball manufacturers door-to-door sales, on-site settlement, integrity management, with offices around, long-term cooperation. Large chromium content, stainless steel ball wear-resistant function is high< Stainless steel ball is an important basic component, especially in precision industry, which plays an important role in the development of national economy. Under some special conditions, stainless steel balls of special materials are often needed to complete the functions required in different environments. In fact, some special stainless steel balls have been widely used in various fields of national economy, including 9cr13cr13 stainless steel, copper, aluminum, titanium alloy steel, agate, glass, ceramic balls, etc. Their popularization and application not only promote the development of stainless steel ball industry, but also promote the technical development and improvement of related industries. High chromium stainless steel ball is an important grinding body in ball mill, which is called grinding stainless steel ball in foreign countries. High chromium stainless steel ball is widely used in metallurgy, cement building materials, thermal power generation, flue gas desulfurization, aerated concrete, magnetic materials, chemical industry Coal water slurry, pellet, slag, superfine powder, fly ash, calcium carbonate, quartz sand and other industries. < br > high chromium stainless steel balls are produced by medium frequency electric furnace, metal mold or sand mold forging; The stainless steel balls with carbon content between 80% and 20% are all high chromium balls, and the national standard requires high chromium ball hardness (HRC); If the hardness is higher than 58 degrees, the chromium ball must be quenched by heat treatment< Low chromium stainless steel ball is an important grinding body in ball mill, which is called grinding stainless steel ball abroad. < br > low chromium stainless steel ball is produced by medium frequency electric furnace, metal mold or sand mold forging; The stainless steel balls with 0% carbon and 80% - 30% carbon content are all low chromium balls, and the hardness of low chromium balls is required by national standards; Low chromium stainless steel balls are widely used in metallurgical mines, cement building materials, thermal power generation, flue gas desulfurization, aerated concrete, magnetic materials, chemical industry, coal water slurry, pellet, slag, ultra-fine powder, fly ash, calcium carbonate, etc Quartz sand and other industries. < br > steel shot is also known as cast steel shot, including high carbon steel shot and low carbon steel shot (low carbon cast steel shot is also commonly known as bainitic steel shot). It is made of scrap steel. After electric furnace 1500-1650 ℃, it is processed by centrifugal atomization granulation or water impact atomization granulation, drying, screening and packaging to obtain metal abrasive< Its advantages are: the cutting process is completed by automatic machine, and its particle fineness is extremely average. There are no pores in the product in the drawing process, so it has long service life, short shot blasting time and low loss. The ball milling process of stainless steel changes the surface of high hardness steel wire shot, and the shot roundness (GGG) has the characteristics of moderate hardness, high strength and good toughness, It is safe, reliable and has good technical effect. 4 it has bright appearance and no rust< The post production processes of stainless steel balls, such as automatic cleaning of stainless steel balls, automatic appearance inspection (automatic elimination of different products), automatic rust prevention, counting and packaging, are the key factors affecting the quality of stainless steel balls. The appearance inspection of stainless steel ball is an indispensable process in the process of stainless steel ball processing. The appearance inspection of stainless steel ball mainly includes surface scratch, rust, surface freckles and so on. Stainless steel ball production process: stamping & mdash& mdash; Polishing & mdash& mdash; Quenching & mdash& mdash; Hard grinding & mdash& mdash; Appearance & mdash& mdash; Intensive research & mdash& mdash; Cleaning & mdash& mdash; Antirust & mdash& mdash; Finished product packaging< Stainless steel balls are widely used in electric power, building materials, mining, metallurgy and other fields< Br > the factors affecting the quality of stainless steel ball are as follows: material influence

The density of stainless steel ball, cast iron ball and alloy stainless steel ball is different for different materials. The density of steel is higher than that of cast iron, and alloy steel is different according to the density and content of main alloy elements< The influence of stainless steel ball manufacturing: the structure of rolled and forged stainless steel balls is dense, so the density is high; the structure of forged cast stainless steel balls, cast iron balls or forged alloy balls is not very dense, and even there are pores in them, so the density is lower< The influence of microstructure of stainless steel ball: the density of martensite, austenite, bainite, ferrite and other different crystal structures is also different, which also affects the crystallinity< Br > stainless steel ball is an important part of the bearing industry, and it is also a moving body widely used in the bearing industry. Its quality directly affects the bearing quality. The post production processes of stainless steel balls, such as automatic cleaning of stainless steel balls, automatic appearance inspection (automatic elimination of different products), automatic rust prevention, counting and packaging, are the key factors affecting the quality of stainless steel balls. The appearance inspection of stainless steel ball is an indispensable process in the process of stainless steel ball processing. The appearance inspection of stainless steel ball mainly includes surface scratch, rust, surface freckles and so on< Stainless steel ball is an important basic component, especially in precision industry, which plays an important role in the development of national economy. Under some special conditions, stainless steel balls of special materials are often needed to complete the functions required in different environments. In fact, some special stainless steel balls have been widely used in various fields of national economy, including 9cr13cr13 stainless steel, copper, aluminum, titanium alloy steel, agate, glass, ceramic balls, etc. Their popularization and application not only promote the development of stainless steel ball industry, but also promote the technological development and improvement of related industries< Stainless steel balls are widely used in building materials, mining, electric power, metallurgy and other industries, especially in precision industry. Stainless steel ball plays an important role in the development of national economy. It is an important part of the bearing, so the quality of the stainless steel ball directly affects the quality of the bearing; And stainless steel ball bearing industry is also the use of more moving body. Therefore, for a good bearing, it is necessary to use high-quality stainless steel ball in order to obtain good use effect and long service life< The quality of stainless steel ball is directly related to the industry it serves. The professional sales items include: precision bearing steel ball, 304 stainless steel ball, solid carbon steel ball, brass ball, wear-resistant steel ball manufacturers and other related businesses. Please contact the merchants who have this business. What are the reasons that affect the quality of stainless steel ball? In fact, the difference of material is still the most important. For example, the stainless steel ball produced by some alloy materials with super high strength is the wear-resistant stainless steel ball with super high wear resistance. Of course, its cost is also high, it is widely used in aerospace and some large industries. It is considered that the factory inspection is necessary to obtain high quality stainless steel ball. For example, to see if there are freckles, damage, rust and so on on on the surface of stainless steel ball< Br > for some products with different lattice. It must be reprocessed to ensure its quality. Their popularization and application not only promote the development of stainless steel ball industry, but also promote the technological development and improvement of related industries. It mainly includes the influence on stainless steel, copper, aluminum, titanium alloy steel, agate, glass, ceramic ball and other industries. Therefore, the quality of stainless steel ball is directly related to the progress of the people< Stainless steel ball is an important basic component, especially in precision industry, which plays an important role in the development of national economy. Under some special conditions, stainless steel balls of special materials are often needed to complete the functions required in different environments. In fact, some special stainless steel balls have been widely used in various fields of national economy, including 9cr13cr13 stainless steel, copper, aluminum, titanium alloy steel, agate, glass, ceramic balls, etc. Their popularization and application not only promote the development of stainless steel ball industry, but also promote the technological development and improvement of related industries< Carbon steel balls are classified into low carbon steel balls, medium carbon steel balls and high carbon steel balls according to their materials, and the main materials are 1010-101041085, etc; According to the hardness, it can be divided into soft ball and hard ball, that is, it can be judged according to whether heat treatment is needed: the hardness increased after heat treatment is about hrc60-6, commonly known as hard ball in the industry; The hardness without heat treatment is relatively low, about HRC40-50, commonly known as soft ball in the industry; According to whether it is polished, it is divided into black ball and bright ball, that is, the lower grinding ball has not been polished, which is commonly known as black ball in the industry; After polishing, the surface is as bright as a mirror, commonly known as bright ball in the industry; Stainless steel ball has the common problem of stainless steel ball ratio of ball mill. In the development of hardware accessories enterprises, the products with low technical content and low requirements have been gradually replaced by high-tech and high-precision accessories. In the stainless steel ball industry, many places used to produce stainless steel balls mainly in small workshops and factories, with weak brand awareness and no pursuit of technology, often relying on price war and sales. But this type of operation has not been able to meet the needs of the market. Qianrun precision stainless steel ball factory keeps pace with the times, grasps the changing trend of the market, has a keen sense of the new trend of market development, pays attention to the brand promotion of stainless steel ball products, looks squarely at the technical content of finished stainless steel ball products, and constantly studies and develops new products, and actively responds to the ever-changing market changes< Br > stainless steel balls are widely used in many industries. Such as widely known bearing industry, stainless steel ball is a pivotal factor of bearing function. In addition, more and more high-precision industries, such as aerospace manufacturing industry, scientific research industry, precision measurement industry, are using stainless steel balls more and more. Moreover, the precision requirement of stainless steel ball is also increasing< With the continuous development of stainless steel ball industry, there are more and more problems. According to the list required by Pan bloggers, manufacturers integrate three solutions for reference< Br > firstly, how to determine the rotation speed of the ball mill, when other conditions remain unchanged, the movement state of the grinding medium in the cylinder depends on the rotation speed of the ball mill. The grinding effect is different with different medium movement state

It's the same. When the rotation speed of the ball mill is low, the medium is mainly in the descending movement, and the impact effect is small. The grinding effect is mainly grinding, and the productivity of the ball mill is low, so it is suitable for fine grinding; When the rotation speed of ball mill is high, the proportion of medium throwing motion mode increases, the impact effect of stainless steel ball is strong, the grinding effect is mainly impact, followed by grinding stripping, which is conducive to crushing and destroying coarse-grained materials, and the ball mill has high production capacity. When the filling rate of ball mill is different, the required speed is also different when the useful power reaches a large value. The higher the filling rate, in order to ensure that the inner ball can also be in the throwing movement, the higher the rotation speed of the ball mill is required. High price sales of various specifications of precision bearing steel balls, 304 stainless steel balls, solid carbon steel balls, brass balls, wear-resistant steel balls manufacturers welcome scrap dealers, industry, enterprises, power departments to visit and negotiate! Only in this way can the useful power reach a large value and the ball mill have a large yield< Br > secondly, to determine whether the ball mill is bulging, the current indicated by the ammeter of the main motor of the ball mill is decreasing; Classifier overflow starts & lt; Run rougher;, The amount of return sand increases gradually, the overflow concentration increases and the particle size becomes coarse; The feeding end of the ball mill has slurry ejecting outwards; The sound of the ball mill is boring, the noise becomes smaller, and the impact and falling sound of the stainless steel ball can hardly be heard; The flotation froth has obvious changes, the flotation agent's function is out of tune, and the mineralization phenomenon is weakened. If such a problem arises, it is necessary to consider whether the ball mill bulge and affect the progress of the work< Br > the proportion of stainless steel balls in the rear and ball mills is different, and the total ball loading of different ball mills is different. For example, mqg1500 & times; 3000 ball mill (capacity 100 & mdash; 150 tons) large loading capacity 5 & mdash; 10 tons. Add stainless steel ball & phi; 120 mm and & phi; (100 mm) accounted for 30% & mdash; 40%, the ball 80 mm accounted for 40% & mdash; 30% and & phi; 60 mm and & phi; 40 mm), accounting for 30%. Why is the amount of stainless steel balls added only 80% in the running in process of the ball mill? Because after the ball mill is installed, the big and small gears of the ball mill need to be meshed, and the processing capacity (ore volume) also needs to be gradually increased. After two or three days of normal continuous operation of the ball mill, stop the ball mill and check the meshing condition of the big and small gears, Open the manhole cover of the ball mill and add the remaining 20% stainless steel balls (such as stainless steel balls) for the second time< The difference between casting and wear-resistant steel ball: the diameter of wear-resistant steel ball mill is large, and the impact toughness of steel ball is high. The impact toughness value of high chromium ball with better wear-resistant effect in casting steel ball is far lower than that of wear-resistant steel ball with basically the same wear-resistant effect. Due to the different raw materials used in the two processes, the steel embryo pressure and purity of wear-resistant steel ball are excellent, The impact values are greater than or equal to 12 joules, while the raw materials of cast steel balls are generally scrap iron, steel slag and other materials melted in their own small electric furnace, the raw materials have many impurities and no compression ratio, and the impact values are in the range of 2-6 joules< Because of the different materials and processing technology, the internal and external hardenability of the stainless steel balls of the fuel burner parts after heat treatment is poor, and the internal and external hardness of the steel balls after production treatment is quite different. Because the wear-resistant steel balls of Shandong YILAITE have high carbon, manganese, chromium and other stainless steel balls for transportation, and the gold elements are reasonably matched, the heat treatment hardenability of the stainless steel balls during production is strong, and the internal and external hardness difference is small, Because of the difference of impact value of stainless steel ball in fishing gear, forged ball is more unbroken than cast ball< Br > if the mill is wet grinding to produce mineral powder and the steel ball is soaked in water, the steel ball is required to have certain corrosion resistance. Our forged ball contains high carbon manganese chromium and other alloy elements, and the reasonable collocation can improve the electrode and potential of metal in grinding application, while the cast ball generally has lower carbon manganese content than the forged ball, Moreover, chromium and carbon manganese are not as good as forged balls in corrosion resistance. Because the internal metallographic structure after production is martensite and massive eutectic carbide, which is different from martensite and tempered martensite in metallographic structure of wear-resistant steel balls, it is easy to be corroded by slurry< In general, the crushing rate of cast steel ball is 3%, while that of wear-resistant steel ball is 1%. Due to the small crushing rate, the powder yield of the mill is increased, and the beneficiation cost is reduced, so the production efficiency of the mill is improved< Br > because the metallographic structure of our wear-resistant steel ball is fine acicular martensite, the wear-resistant steel bar manufacturer has higher hardness. Under the same wear resistance as the cast steel ball, the price of wear-resistant steel ball is far lower than that of cast steel ball, and the grinding cost is lower< Br > in the specific processing process, many wear-resistant steel ball manufacturing enterprises use design sand which can be reused for many times in modeling design. Because it can be reused for many times, the cost is low. However, the surface of wear-resistant steel ball made of design sand is not smooth, uneven, and there are many uneven holes on the surface< Br > raw materials (scrap) do great harm to the quality of wear-resistant steel balls. The quality of wear-resistant steel balls is immediately determined by the quality of raw materials (scrap). Today, the key is to compare two kinds of scrap materials bearing steel and tire wool< The raw material GCr15 of bearing steel is the leftover material for manufacturing rolling bearings. The material is stable, and the bearing steel itself belongs to wear-resistant steel plate, which has strong wear resistance. The steel ball produced is more wear-resistant than the general raw material. In the process of processing, the chemical molecules of pure bearing steel are stable, and the carbon content is stable, The content of carbon in the wear-resistant steel ball can be controlled by adding carburizing agent according to a certain preparation. Because the content of carbon is also very important to the wear-resistance of the wear-resistant steel ball, the higher the carbon content is, the more wear-resistant but fragile the steel ball is, the lower the carbon content is, the higher the roundness rate of the steel ball is and the ball is not wear-resistant< Br > the cost of tire wool is relatively cheap, and it can save water and electricity when put into the furnace. I am engaged in selling all kinds of precision bearing steel balls, 304 stainless steel balls, solid carbon steel balls, brass balls, wear-resistant steel balls and other materials all the year round. Welcome to call! Compared with burning bearing steel, it can save 300 yuan per ton of steel balls. The raw material of tire wire has no wear resistance, and the silicon content in raw material of tire wire is relatively high. The wear-resistant steel balls produced are fragile and not wear-resistant.


Therefore, the bearing steel for producing wear-resistant steel balls has high cost performance and good wear resistance, but the cost is higher than that of the steel balls made from tire wool. The high cost lies in raw material scrap, and the second high cost lies in the increase of water and electricity cost< Br > as we all know, if the consumption of wear-resistant steel balls is high, the cost of the mine will be increased, and if the consumption of wear-resistant steel balls can be reduced, there will be advantages such as the increase rate and cost< Br > firstly, it should be clear that it is not the problem of wear-resistant steel ball itself; Ball mill diameter and speed ratio: the larger the diameter of the ball mill, the higher the speed ratio, the faster the ball fitness exercise. When the diameter of the mill exceeds 3M, the impact force on the ball will be increased and the wear level will be aggravated. But the speed ratio should not be too low, otherwise it will harm the working efficiency of the mill< Br > preparation of wear-resistant steel ball: the larger the diameter of the wear-resistant steel ball, the greater the quality of the ball. When the speed ratio of the ball mill is fixed, the greater the mechanical energy when the ball is thrown down, and the greater the impact of the ball. The larger the loading capacity of the ball, the greater the collision probability between the ball and the ball, and the more tired the whole process of wear. It is also harmful to the whole process of wear-resistant steel ball that the middle of the grinding ball with the same diameter has more impact probability, and the higher the impact probability is, the more tired the whole process of wear is< The characteristics of raw materials: the strength, ductility, specification and appearance of raw materials are critical to the whole drilling process of wear-resistant steel balls. For example, when the strength of raw materials is much lower than that of steel balls, the fatigue wear of steel balls accounts for a large proportion< Br > 1: hardness: among many wear characteristics, the hardness of material plays an important role< Br > 2: strength; Here, it refers to the pressure of material on abrasive. With the increase of wear pressure, the amount of wear also increases. As the pressure increases, the penetration depth of abrasive to the data increases, and the energy of cutting deformation to the surface of wear-resistant data also increases< Br > 3: speed: the influence of wear speed is different. Under the condition of sliding wear, the effect of speed is not obvious. When the impact speed reaches a certain level, the material that would not have been worn under sliding or low speed condition can also be worn< Br > 4: angle: in erosion wear, impact angle has a great influence on wear. Moreover, the impact angle has different effects on the brittle and ductile data< Br > 5: temperature: the wear increases with the increase of temperature< Br > 6: humidity: in practice, humidity has a great influence on the wear of wear-resistant steel ball, which can be divided into dry grinding and wet grinding according to working conditions and grinding materials< Br > 7: particle size: abrasive particle size: the impact on wear initially increases linearly with the increase of particle size. After the critical particle size, the growth of wear becomes slow or no longer grows. Wear is the gradual loss of the surface of the object due to mechanical action. Wear failure is the loss of function of mechanical products due to data wear. Therefore, in our daily work, we should pay attention to the changes of products at any time< Br > wear resistant steel ball is a kind of grinding medium in the ball mill, which is used to crush the materials in the mill. It is widely used in cement construction, gold mine, flue gas desulfurization, chemical industry, magnetic materials, thermal power generation, pellet and so on. Because the wear-resistant steel ball is widely used, more and more manufacturers will be produced, but we still need to find a reliable one, so we should know some characteristics about the wear-resistant steel ball< In the early stage, wear-resistant steel balls were produced by forging. The steps are heating, heating with fuel (coal or natural gas) to a specific temperature, forging with air hammer, and then forming by heat treatment. Compared with the traditional process, it increases the production efficiency, reduces the workload and environmental pollution, and also reduces a lot of production costs. For the size of the ball also have, more than 90 mm diameter of the ball has been basically unable to produce. Then there is the rotary cutting and rolling forging process, mainly because the development of mining industry needs larger size ball mills and wear-resistant balls; amp; High frequency induction furnace heating technology and electric heating furnace with fuel replace the coal and natural gas in the past, greatly reducing the consumption cost and production time. The roundness and hardness of wear-resistant steel balls produced by the products meet the international standards, which is a production process meeting the current market demand< Principle: stainless steel does not rust, but it is not easy to rust. The principle is to form a layer of compact chromium oxide layer on the steel surface by adding chromium element, which can effectively prevent the steel from re contacting with the air, so that the oxygen in the air can not enter the steel, so as to prevent the steel from rusting< Classification: Chinese national standard (CNS), Japanese industrial standard (JIS) and American Iron and Steel Association (AISI) use three digits to represent different stainless steels, which are widely used by industry offices. Among them, 200 series is Cr Ni Mn austenitic stainless steel, 300 series is Cr Ni austenitic stainless steel, 400 series is Cr Ni austenitic stainless steel (commonly known as stainless steel), including martensite and ferrite 440C stainless steel ball 440 / 440C: Performance: hardness up to 56 & amp; amp; mdash; 58 degrees, magnetic, good corrosion resistance, strong wear resistance, strong toughness applications: mainly used for bearings, stamping / hydraulic parts, valves, seals, refrigeration equipment, aerospace high-precision mechanical parts, crafts, toys< Application: 440C stainless steel ball is usually used in aviation, aerospace, bearing, motor, high precision instrument, valve, petroleum and other industries requiring high precision and anti rust performance< Br > stainless steel ball is an important part of bearing, and it is also widely used in bearing industry. Its quality directly affects the quality of bearing. The key factors affecting the quality of stainless steel balls are automatic cleaning, automatic appearance inspection (automatic rejection of unqualified products), automatic rust prevention, counting and packaging. The appearance inspection of stainless steel ball is an indispensable process in the process of stainless steel ball processing. The appearance inspection of stainless steel ball mainly includes surface scratch and corrosion

Surface spots, etc< The stainless steel ball is an important basic component, especially for precision industry, which plays an important role in the development of national economy. In some special conditions, in order to achieve the required functions in different environments, it is often necessary to use stainless steel balls of special materials. In fact, some special stainless steel balls have been widely used in various fields of national economy, including 9cr13cr13 stainless steel, copper, aluminum, titanium alloy steel, agate, glass, ceramic balls, etc. their popularization and application not only promote the development of stainless steel spheroidization industry, but also promote the development of stainless steel spheroidization, and the technological development and progress of related industries< The common stainless steel ball is different from the high temperature steel ball. The main difference between high temperature steel ball and normal temperature steel ball lies in the different manufacturing process and sealing performance. Generally, the normal temperature steel ball is soft seal valve seat; High temperature steel ball for hard seal (metal or mechanical carbon, ceramic, etc.), valve internals material is better than soft seal. In the aspect of material treatment, the general constant temperature ball lathe can directly feed the high temperature ball after processing it (because the process of different materials is different, such as nitriding, spraying, etc., which will not be repeated here) < br > assembly: the normal temperature ball can be assembled after getting the parts; The high-temperature steel ball needs to grind the ball core and valve seat, which is also very important. The leakage depends on grinding < br > 304 stainless steel ball: it is a commonly used material in stainless steel ball, with a density of 93g / cm, also known as 18 / 8 stainless steel ball in the industry. It is widely used in industry, furniture decoration industry and food and medical industry. 304 is a kind of universal stainless steel bead, which is widely used in manufacturing equipment and parts with good comprehensive properties (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel bead, the steel must contain more than 18% chromium and more than 8% nickel< Br > stainless steel precision bearing ball blank forming & amp; amp; rarr; Debonding & amp; amp; rarr; Rough grinding & amp; amp; rarr; Heat treatment & amp; amp; rarr; Smooth ball (or file & amp; amp; rarr; Soft mill) & amp; amp; rarr; Hard grinding & amp; amp; rarr; Fine grinding (or polishing) & amp; amp; rarr; A simple production process of ultra-fine grinding. The detailed production process of steel ball drawing (wire drawing): draw the wire to the required diameter with wire drawing machine; Cold heading (forging): put the drawn wire into the steel ball cold heading machine, and form the ball embryo by upsetting the steel die in the machine; Light ball: the two cast iron grinding ball plates in the light ball machine are cold pressed soft balls: the two cast iron grinding ball plates in the soft ball machine grind the light ball embryo into the required ball diameter and surface roughness; Heat treatment: put the ball into the heat treatment furnace for carburizing, quenching and tempering, so that the ball has a certain carburized layer and hardness, toughness and crushing load; Hard grinding: in order to remove the black oxide layer on the surface of the steel ball and correct the accuracy of the steel ball, the ball billet after heat treatment is grinded under pressure; Finish grinding / polishing cleaning: finish grinding: finish grinding the ball blank on the finishing machine to achieve the required precision and finish of the finished product; Polishing and cleaning: pour the ball into the polishing barrel, rotate and clean it with polishing agent to make the spherical surface clean and bright; Appearance selection: check whether there are defects on the surface of steel ball by manual visual inspection, measure the true roundness with micrometer and change the batch number. Package: steel ball / stainless steel ball / precision bearing steel ball is coated with anti rust oil and packed in carton or woven bag< Br > structure and performance of self-aligning ball bearing: the common self-aligning ball bearing is double row self-aligning ball bearing, which is composed of large spherical groove outer ring, double channel inner ring, two rows of stainless steel balls and cage. When rotating, the stainless steel ball, cage and inner ring can incline to the outer ring spindle to a certain extent (its feature is automatic centering), and the axis offset of the shaft and bearing box caused by improper processing and installation can be automatically adjusted. However, in general, the inclination angle of major axis should not be 3 degrees< Br > the self-aligning ball bearing also has the structure of single row, no cage and double-sided dust cover. The diameter of the bearing hole is not more than 10 mm, which is commonly used in aircraft frame parts. The bearing is lubricated once and no longer lubricated< The characteristics of self-aligning ball bearing: it can bear radial load and small axial load. The axial displacement of the shaft (shell) is within the clearance limit, which has the function of automatic alignment. Under the premise of small internal and external tilt, it can work normally. It is applicable to the parts where the coaxiality of bearing seat hole cannot be strictly guaranteed< The inner ring of self-aligning ball bearing has two raceways, the outer ring raceway is spherical, and the spherical curvature center is consistent with the bearing center. As a result, the inner ring, ball and cage are tilted relative to the outer ring. Therefore, the deviation caused by the shell machining or installation error can be adjusted automatically, but the inclination of the larger axis of the inner and outer rings should not be greater than 3 & deg;;. Self aligning ball bearing mainly bears radial load. It can bear both axial load and radial load. Generally, it is not used to bear the pure axial load, because only a row of stainless steel balls can bear the force under the pure axial load< Br > definition of stainless steel: steel with more than 5% chromium content and high chemical (acid, alkali, salt) corrosivity< A simple production process for stainless steel precision bearing balls & amp; amp; rarr; Risk of dereliction of duty; Rough machining & amp; amp; rarr; Rarr; Heat treatment rarr; Ball blank forming; Light ball (or file & amp; amp; rarr; Soft grinding machine & amp; amp; rarr; Hard grinding; Rarr study; Finishing (or polishing) & amp; amp; rarr; Ultra precision research. Detailed production process of steel ball wire drawing: wire drawing to the required diameter by wire drawing machine; Cold heading (forging): put the wire drawing into the steel ball cold heading machine, and use the steel die in the machine for upsetting to form the steel ball embryo; Light ball: two round plate cast iron grinding balls are filed and pressed on the light ball machine to remove the outer ring and two poles of the ball embryo; Soft ball: two cast iron grinding plates are used to file the ball on the soft ball machine to make the diameter and surface roughness of the ball meet the requirements; Heat treatment: put the steel ball into the heat treatment furnace for carburizing, quenching and tempering, so that the steel ball has a certain carburized layer and hardness, toughness and crushing load; Hard grinding: the grinding wheel in the grinder grinds the ball embryo after heat treatment under pressure to remove the black oxide layer on the surface of the ball and correct the accuracy of the ball; Fine grinding/

Polishing and cleaning: fine grinding: grind the grinding ball embryo on the fine grinding machine to make the grinding ball reach the precision and finish required by the finished product; Polishing cleaning: pour the ball into the polishing barrel, rotate it, and clean it with polishing cleaning agent and water to make the spherical surface clean and bright; Appearance selection: check whether there are defects on the surface of the steel ball by hand and visually, measure the true roundness with a micrometer, and measure the batch diameter change and surface roughness with a surface roughness meter as the final inspection; Packing: steel ball / stainless steel ball / precision bearing steel ball coated with antirust oil, packed in carton or woven bag< Br > structural characteristics of self-aligning ball bearing: the commonly used self-aligning ball bearing is double row self-aligning ball bearing (also known as automatic self-aligning ball bearing), which is composed of an outer ring with large spherical groove, a double groove inner ring, two rows of stainless steel balls and cage. When rotating, the stainless steel ball, cage, inner ring and outer ring mandrel can be tilted to a certain extent (with self-aligning function). Due to improper processing and installation, the axis offset of shaft and bearing box can be automatically adjusted. But in general, the inclination angle of the major axis should not exceed 3 degrees< Br > the self-aligning ball bearing is of single row full ball, no cage and double-sided dust cover structure. The hole diameter of this kind of bearing is generally not more than 10 mm, which is commonly used in aircraft frame parts. The bearing is lubricated once, and there is no need to lubricate again< The product features of self-aligning ball bearings are as follows: they mainly bear radial load and small axial load. The axial displacement of the shaft (shell) is within the clearance limit. It has automatic alignment function. Under the premise of small internal and external tilt, it can work normally. It is applicable to the parts where the coaxiality of supporting seat hole cannot be strictly guaranteed< The inner ring of self-aligning ball bearing has two raceways, the outer ring raceway is spherical, and the spherical curvature center is consistent with the bearing center. As a result, the inner ring, the ball and the cage are tilted relative to the outer ring. Therefore, the deviation caused by shell machining or installation error can be automatically adjusted, but the inclination angle of inner and outer ring axis is generally not more than 3 degrees;. Self aligning ball bearing mainly bears radial load. It can bear both axial load and radial load. It is usually not used to bear pure axial load, because only one row of stainless steel balls can bear pure axial load< Br > the characteristics of stamping bearing for stamping bearing you should have some understanding, now I will give you a brief explanation of its features and functions< Br > the working principle of stainless steel ball stamping bearing is to apply external force to plate, strip, tube and profile by press and die to produce plastic deformation or separation, so as to obtain the required shape and size of the workpiece. Professional sales of precision bearing balls, 304 stainless steel balls, solid carbon steel balls, brass balls, wear-resistant steel balls, manufacturers stable, safe, reliable, can achieve maintenance free, technical level has reached the domestic level, reached the international advanced level of similar products. In the world's iron and steel industry, sheet metal accounts for 60-70%, most of which are formed by stamping< Compared with casting and forging, stamping bearing is thin, uniform, light and firm. Stamping can produce other hard to machine workpieces with stiffeners, stiffeners, corrugations or flanging to improve their stiffness. Due to the use of precision die, the precision of the workpiece can reach micron level, with high repeatability and consistent specifications. The hole sleeve and boss can be punched< Br > later, we remind you not to pay attention to the use of hot stamping. You can choose from tens of millions of products. We are specialized in selling precision bearing steel balls, 304 stainless steel balls, solid carbon steel balls, brass balls and wear-resistant steel balls. The trade safety of manufacturers is guaranteed. In the case of producing hundreds of stamping parts per minute, we can complete the feeding, stamping, discharging, waste disposal and other processes in a short time. Personal, equipment and quality accidents occur from time to time< The ball mill stainless steel balls are divided into cast low carbon alloy stainless steel balls, medium carbon alloy stainless steel balls, high manganese stainless steel balls and rare earth chromium molybdenum alloy stainless steel balls; Forging low chromium ball, medium chromium ball and high chromium ball< Br > what kind of stainless steel balls are easy to sell in the market now? Now let's analyze: casting surface quality is good, impact resistance is good, toughness is strong, wear resistance is good, not easy to fracture and out of round. To heat the metal to 1050 ℃ (plus or minus 50 ℃), the forging press is used to exert pressure on the metal blank to produce plastic deformation, so as to obtain the forging with certain mechanical function, shape and size. Forging (casting and stamping) is one of the two main parts. By casting, the loose defects of as cast metal can be eliminated and the microstructure can be optimized. At the same time, the mechanical properties of forgings are generally better than those of castings of the same material due to the retention of complete metal flow line. In the related machinery, in addition to the simple shape of rolled plate, profile or weldment, the important parts with high load and bad working conditions are mostly forged< In addition, the cast stainless steel ball must be made of wear-resistant materials, such as national standard 60Mn, 65Mn, or some self-developed wear-resistant alloy steel materials. We use the steel produced by the national super large steel plant, which is also a kind of material. The quality of forgings depends on 80% of the material quality. For example, high manganese steel has good impact resistance, toughness, wear resistance and is not easy to fracture. Cast stainless steel ball is favored by the majority of users because of its low price, economy and durability. International mining giants Rio Tinto, BHP Billiton and angulu gold, for example, all use cast stainless steel balls< Casting features: forging heated metal materials into various shapes of tools, mechanical parts or blanks is called casting. Casting can change the internal structure of metal material, refine the grain and improve its mechanical properties.

Suit cover

The non anti cloth suit Nai has limited good air permeability, can prevent the invasion of dust and medium harm, has a transparent visual window, and the clothes are clear all day. The storage bag specially prepared for the suit and other valuable agricultural goods can effectively prevent dust, mold and moth, save space, and keep it straight, neat and orderly

There are several materials for suit dust cover. The two common materials are plastic suit dust cover and non-woven suit dust cover. Someone will ask whether the non-woven material of suit dust cover is better than that of plastic material.

Plastic suit cover has good moisture and dust resistance; Transparent, clothes are clear at a glance, but they are not environmentally friendly, and their air permeability is not as good as that of non-woven fabrics.

Non woven suit cover is environmentally friendly, moisture-proof and breathable, will not absorb water and mildew, does not support combustion, and has no harmful substances. It has exquisite printing patterns, low price, recyclable, easy to decompose after waste, etc. However, the dust resistance of non-woven fabrics is not as good as that of plastic materials.

Advantages of dust cover of suit cover: 1. Brand new non-woven fabric, a new generation of environmental protection materials, can be directly used as a mask, which is more environmentally friendly than other types of packaging (paper bag and plastic bag) and has lower cost. 2. Adopt good active environmental protection printing process as the outer packaging of suits to facilitate consumers.

3. Double needle zipper adopts the latest double needle zipper, which is stronger and smoother. Good quality will last longer! The logo of the suit manufacturer is printed on the bag body, which can be used for the manufacturer's advertising.

4. Perfect antibacterial. The use of dust cover can make the clothes very broad and stylish, dustproof, mildew proof, moisture-proof and moth proof. After purchase, consumers can save and store suits at home & nbsp& nbsp; & nbsp; & nbsp; & nbsp; & nbsp; The dust cover and non-woven dust bag of suit cover refer to the non-woven dust bag used to hold suits or other clothing, which can be matched with PVC, zipper and other accessories. It is a kind of clothing bag. High grade suits and coats need careful protection. When you put the dry cleaned clothes in the wardrobe and take them out next time, you will find that the dust has fallen on them, so the non-woven dust bag and suit cover dust cover can help you solve all your troubles, effectively prevent dust, mildew and moth, save space, keep them straight, neat and orderly, and let you worry free!

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