Performance comparison of four bearing materials: ordinary bearing steel AISI52100 (GCr15), stainless steel AISI440 (9Cr18), silicon nitride (Si3N4) and zirconia (ZrO2). Ceramic bearing is an important mechanical base. Because it has metal bearings Incomparable excellent performance, high temperature resistance, super strength, etc. are the first in the world of new materials. In the past ten years, it has been used more and more widely in various fields of national economy and people's livelihood. First, because ceramics are scarcely resistant to corrosion, ceramic rolling bearings are suitable for operation in harsh conditions covered with corrosive media. Secondly, because the density of ceramic rolling balls is lower than that of steel, and the weight is much lighter, the centrifugal effect of the outer ring during rotation can be reduced by 40%, and the service life is greatly extended. Third, ceramics are less affected by thermal expansion and contraction than steel, so when the bearing clearance is constant, the bearing can be allowed to work in an environment where the temperature difference changes drastically. Fourth, because the elastic modulus of ceramics is higher than that of steel, it is not easy to deform when subjected to force, so it is conducive to increasing the working speed and achieving higher accuracy. Ceramic bearings have the characteristics of high temperature resistance, cold resistance, wear resistance, corrosion resistance, magnetic and electrical insulation, oil-free self-lubrication, and high speed. It can be used in extremely harsh environments and special working conditions. It can be widely used in aviation, aerospace, marine, petroleum, chemical, automotive, electronic equipment, metallurgy, electric power, textiles, pumps, medical equipment, scientific research and defen

Water heaters and gas stoves often use an ignition pin to ignite. The ignition pin generally makes the lead pin emit electric sparks through the ignition electrode, and the ignition electrode needs an insulating, high temperature resistant and explosion-proof protective cover. The best currently is a ceramic protective cover. Because the ceramic protective cover has a smooth surface and is integrally formed, it is often connected to the ignition electrode by a paste method, but this connection is not reliable, and it is too dependent on the experience of the operator, which makes it difficult to guarantee the quality of the batch ignition pin. In order to overcome the above-mentioned shortcomings, the utility model provides a ceramic protective sleeve with novel design, which includes a ceramic sleeve and two plugs. The plug is a round table structure made of rubber. An inner end surface of the plug is provided with a A stuffed hole, a stuffed ceramic pillar is embedded in the stuffed hole, the end surface of the stuffed ceramic hole at the entrance of the stuffed hole is flush with the inner end face of the plug, the outer wall of the plug is provided with a stripe-shaped protrusion, and the ceramic sleeve The two ends of the inner wall are provided with a ramp opening, which is matched with the plug, and the ramp opening and the ceramic sleeve are an integrated structure. Further, a first through hole is provided on an end surface of the ceramic pillar, and a second through hole is provided on an outer end surface of the plug. The second through hole is in communication with the first through hole, and the lead and the lead connected by the ignition electrode are connected. The needle passes through the first and second through holes. Further, the depth of the ramp opening is matched with the size of the ignition electrode installed

It has a very reliable resistance to various aggressive solutions, even high concentration reagents, at room temperature or when boiling. Except for the following solutions: high concentration, boiling phosphoric acid, boiling potassium hydroxide and sodium hydroxide solution. Calcium oxide stabilized zirconia CaO-FSZ It has a fire resistance of up to 2000 ° C. Compared with high purity corundum, it has further resistance to acids, alkalis and other corrosives. For high wear conditions For example: mortars and nipples, ball mills, extrusion dies, shaft sheaths, etc. Continuous improvement We have been continuously optimizing our laboratory to use physical and chemical porcelain to meet your needs. Alsint 99.7 High Purity Corundum Adopt high standards Our laboratory physical and chemical porcelain products adopt DIN EN 60672-3, Group C100, Type C110 standards; Alsint 99.7 high purity corundum products adopt DIN EN60672, Group C700, Type C799; from raw materials to finished products, we strictly control and ensure The product has always maintained high quality. Alsint 99.7 High Purity Corundum Custom design We can customize Alsint 99.7 parts according to your requirements. As long as you tell us the specific size, we will provide a quote. Alsint 99.7 is a material that has a good application in high wear conditions, chemical technology, electrical engineering and high temperature technolo

Diamond tile is a product after technical processing. It has a very beautiful water ripple pattern and is very popular with consumers. However, the popularity of this type of tile in the market is not very high. Compared with ordinary tiles, the diamond tile has a much thinner section and is more convenient to install. The diamond tile's ability to absorb dirt is also very good, which can help everyone solve many burdens. The following editor will introduce the advantages and disadvantages of diamond tiles. Diamond tile is a secondary firing super crystal technology product. It is an upgraded version of super flat glaze. Water ripple completely solves the flatness problem of traditional full polishing glaze. Compared with the traditional full-polishing glaze, which uses soft polishing (thin polishing), supercrystals use hard polishing, which makes the glaze more flat. Compared with the single glazing of the super flat glaze, the diamond tile adopts the second firing super crystal technology and the second glazing process, which makes the glaze layer thicker and the hair color more uniform, making the surface color smoother, the transition more natural, and the flower color natural. Even more beautiful. Advantages and disadvantages of diamond tiles Advantages of diamond tiles Water ripple: Diamond tile adopts industry-leading secondary firing super crystal technology, ds crystal glaze multiple glazing process, 1180 degree high temperature constant temperature secondary firing, completely eliminates the occurrence of water ripple, the product is harder and flatter, the surface shows The perfect mirror effect, as shiny as a diamond, gives a noble and luxurious visual experience. Suction absorption: The mature secondary firing super cry

In order to adapt to dry pressing or isostatic pressing in the production process of functional ceramics, the ceramic slurry needs to be spray-dried to form granular powder, which requires good fluidity and a certain strength of the particles. During the process, it is not broken, and there is a certain particle gradation. When it is fed, it achieves close packing, has certain bonding characteristics and lubrication characteristics, and the particles should not be bonded to each other. Xinxin Porcelain Company specializes in the production of precision ceramic granulation powder. Through pressure spraying and centrifugal spraying, it forms a variety of particle gradation and high fluidity solid alumina particles. Precision ceramic granulation powder: Type: alumina porcelain 80-99, toughened porcelain, wear-resistant porcelain, talc porcelain, color porcelain. Wet fine powder, porcelain powder. Characteristics: Porcelain forming at low temperature, high density, powder does not stick, no cracking, no porosity in forming porcelain, good consistency of powder. Adaptation process: rapid dry pressing, isostatic pressing, hot die casting, injection, spraying.

1. All lubricating oil should be discharged when the mill is put into continuous operation for one month, thoroughly cleaned and replaced with new oil. After the combined repair, the oil will be changed every 6 months. 2. Check the lubrication condition and oil level of each lubrication point at least every 4 hours. 3. When the mill is running, the temperature rise of the main bearing lubricant does not exceed 55 ° C. 4. During normal operation of the mill, the temperature rise of the transmission bearing and the reducer does not exceed 55 ° C, and the higher does not exceed 60 ° C. 5. The large and small gears are driven smoothly without abnormal noise. If necessary, the gap should be adjusted in time. 6. The ball mill runs smoothly without strong vibration. 7. The motor current should be free from abnormal fluctuations. 8. There is no loosening of each connection fastener, no oil leakage, no water leakage, no ore leakage on the joint surface. 9. Steel balls are added in time according to the wear condition.

1. According to bearing materials: zirconia ceramic bearings, silicon nitride ceramic bearings, silicon carbide ceramic bearings, alumina ceramic bearings, hybrid ceramic ball bearings, 2. Divided by bearing category: deep groove ball bearings, angular contact ball bearings, self-aligning ball bearings, double row angular contact ball bearings, plane thrust ball bearings, outer spherical ball bearings ... 3. According to bearing accuracy: P0, P6, P5, P4, 4. According to bearing size: miniature bearings, small bearings, small and medium bearings, medium and large bearings, large bearings (bearings with a nominal outer diameter range of 3-430mm) 5. According to processing technology: German design, let cloud production, full ceramic bearings with high cost performance, German design, German production, all ceramic bearings can be customized according to customer special requirements, Roller ceramic bearing advantages: 1. Since ceramics are scarcely resistant to corrosion, ceramic rolling bearings are suitable for operation in harsh conditions covered with corrosive media. 2. Since the density of the ceramic rolling balls is lower than that of steel, and the weight is much lighter, the centrifugal effect of the outer ring can be reduced by 40% when rotating, and the service life is greatly extended. 3. Ceramic is less affected by thermal expansion and contraction than steel, so when the bearing clearance is constant, the bearing can be allowed to work in an environment where the temperature difference changes drastically. 4. Since the elastic modulus of ceramic is higher than that of steel, it is not easy to deform when subjected to force, so it is conducive to improving the working speed and achieving higher accuracy. Main uses of RANUR series roller ceramic bearings: 1. Ceramic bearings have the characteristics o

Ceramic braces have high strength, and their hardness is close to enamel. It has strong anti-staining power to coffee, tea, tobacco, lipstick, etc., and is an ideal dental restoration material. Ceramic crowns can be used to make braces for anterior and posterior teeth. Defective anterior teeth, broken, overfilled, discolored teeth, tetracycline teeth, fluoroplasty teeth, dislocation, or not suitable for orthodontics can be made. First, the teeth must be properly cut and ground, and then a wax pattern of ceramic braces is made on the model, and the wax pattern is embedded with phosphate embedding material. The porcelain ingot was put into a special collapse, melted at 1360 ° C, and was cast with a centrifugal casting machine. The dental beauty of the ceramic braces after casting is a clear glass state. It must be porcelainized in a porcelain furnace and kept at a specific temperature for several hours to form crystals. The ceramic is white and translucent, its physical properties change significantly, and its crushing resistance is greatly improved. Refinish the shape of the porcelain braces, and try coloring on the affected teeth. Mix the pigment according to the color, apply a thin layer evenly, blow dry slowly, then bake, and fix to the affected tooth after the color comparison is satisfactory. Because the cast ceramic has transparency, it needs to be fixed with a colored cement. You can choose a different color when cementing, and finally adjust the color of the ceramic braces. Ceramic dental braces have their advantages compared with metal porcelain braces. The edge of the metal inner crown of the porcelain braces is in contact with the heel. The biocompatibility is not as ideal as that of ceramic materials. Good aesthetic effect, it is an important development in the field of dental beauty in recent years.

Fully lined hard-sealed ceramic valve features: First, the thickness of the valve casing exceeds the standard data requirements of national standards GB, JB and American Standard ANSI, and the chemical elements and mechanical properties of the main material meet the national standard requirements. The three-segment structure design of the shell has a solid shape and a beautiful appearance. 2. The chemical elements of the valve stem material meet the requirements of national standards. They are finely polished and the surface is treated with anti-corrosion, nitriding or quenching and tempering to ensure that the valve stem has good mechanical properties and corrosion resistance. Third, built-in buffer compensation elastic gasket to ensure stable and good sealing. And in the medium containing impurities, it is not easy to jam and cause the ball to break. Fourth, all lined hard sealing surface contact ceramic ball valve is in contact with the medium are structural ceramic materials, its chemical stability plus extremely high hardness (hardness HRA88 or higher, second only to diamond). Therefore, ceramics have high compressive strength, high abrasion resistance, excellent oxidation and corrosion resistance, high temperature resistance, and good thermal insulation properties. 5. Manufacture with precise grinding technology (introduced in Taiwan) and advanced machinery and equipment. The structure of the valve is simple, the flow passage is smooth, and the resistance of the medium flow is small. The hard-sealed ceramic inner parts are composed of six scientific and reasonable designs. The ball and seat surfaces of the valve are processed in contact, which makes the ball and the inner R and outer R tightly combined. , Low resis

At present, the development trend of the world's precision ceramic products shows that there are more and more product categories. Various precision ceramic products have been successfully used in thermal conduction, thermomechanics, nuclear energy, microelectronic technology, automation devices, sensitive sensors, optical fields, and medical fields. And new energy. At present, the research and production of precision ceramics in various countries is forming a new round of market climax and more intense competition. The development direction of fine ceramics is mainly focused on high-temperature structural ceramics. Now in aerospace technology, automobiles, aircraft, military industry, nuclear engineering, medical equipment and mechanical power, it has entered a large-scale and large-scale use phase. The research and promotion of precision ceramic materials based on silicon nitride, silicon carbide, and zirconia ceramics in the United States have achieved rapid development, and the output of products has accounted for more than 60% of the world's total output. Ceramic bearings have a working temperature of over 1300 degrees Celsius and their working strength is more than five times that of ordinary metal materials. Heat-resistant zirconia ceramic tiles can withstand high-temperature aerospace friction up to 6000 degrees Celsius, and are widely used as space shuttle armor. The bioceramic products developed by him have been used in bone repair, porcelain tooth repair and other aspects. Ceramic piston caps, exhaust pipe linings, turbocharged rotors and gas turbine rotors are being researched in an orderly manner. At present, some countries have also strengthened the research and development of military precision ceramics and special ceramics, with a view to gradually strengthening their promotion and use in the military field. Shenzhen F

The aluminum nitride film refers to an aluminum nitride cover layer prepared by vapor deposition, liquid deposition, surface conversion, or other surface technologies. Aluminum nitride (AIN) is the only stable phase in the AI-N binary system. It has a covalent bond and a hexagonal wurtzite structure. It cannot be melted under normal pressure, but it can decompose at 2500K. 6.2eV can also be doped into a wide band gap semiconductor material. The aluminum nitride film refers to an aluminum nitride cover layer prepared by vapor deposition, liquid deposition, surface conversion, or other surface technologies. Aluminum nitride (AIN) is the only stable phase in the AI-N binary system. It has a covalent bond and a hexagonal wurtzite structure. It cannot be melted under normal pressure, but it can decompose at 2500K. 6.2eV can also be doped into a wide band gap semiconductor material. Aluminum nitride has higher electrical resistivity, lower thermal expansion coefficient, higher hardness, and better chemical stability. However, unlike ordinary insulators, its thermal conductivity is also very high. Aluminum nitride has high optical transmission in the entire visible and infrared bands. Aluminum nitride film has a very broad application prospect in microelectronics and optoelectronic devices, substrate materials, insulating layer materials, and packaging materials. Because of its high surface acoustic wave velocity and piezoelectricity, it can be used as a surface acoustic wave device. In addition, aluminum nitride has good abrasion and corrosion resistance and can be used as a protective film. The aluminum nitride film was first prepared by chemical vapor deposition (CVI), and its deposition temperature was over 1000 degrees Celsius. Later, by using plasma-enhanced chemical vapor deposition, or physical vapor deposition ((PVD)), the deposition temperature was gradually reduced below 500 degrees Celsius, and can even be deposited near room tempe

effect: 1. High-temperature solid lubricants, extrusion anti-wear additives, additives for the production of ceramic composite materials, refractory materials and antioxidant additives, especially in the case of resistance to molten metal corrosion, heat-enhancing additives, high-temperature-resistant insulating materials. 2. Metal forming release agent and metal wire drawing lubricant. Special electrolytic and resistive materials at high temperature. 3. High-temperature solid lubricants, extrusion anti-wear additives, additives for the production of ceramic composite materials, refractory materials and antioxidant additives, especially in the case of resistance to molten metal corrosion, heat-enhancing additives, high-temperature insulation materials. 4. A variety of laser anti-counterfeiting aluminum plating, trademark bronzing materials, various tobacco labels, beer labels, packaging boxes, cigarette packaging boxes, and other aluminum plating. 5. Cosmetics are used as fillers for lipsticks, non-toxic, lubricating, and shiny. 6, pressed into various shapes of boron nitride products, can be used as high temperature, high pressure, insulation, heat dissipation parts. It can also be used as thermal shielding material in aerospace. 7, super hard materials made of boron nitride processing, can be made into high-speed cutting tools and geological exploration, oil drilling bits.

Ceramic braces have high strength and their hardness is close to that of dental enamel. It has strong anti-staining power to coffee, tea, tobacco, lipstick, etc., and is an ideal dental restoration material. Ceramic crowns can be used to make braces for anterior and posterior teeth. Defective anterior teeth, broken, overfilled, discolored teeth, tetracycline teeth, fluoroplasty teeth, dislocation, or not suitable for orthodontics can be made. First, the teeth must be properly cut, and then a wax pattern of ceramic braces is made on the model, and the wax pattern is embedded with phosphate embedding material. The porcelain ingot was put into a special collapse, melted at 1360 ° C, and was cast with a centrifugal casting machine. The dental beauty of the ceramic braces after casting is a clear glass state. It must be porcelainized in a porcelain furnace and kept at a specific temperature for several hours to form crystals. The ceramic is white and translucent, its physical properties change significantly, and its anti-crushing performance is greatly improved. Refinish the shape of the porcelain braces, and then apply the appropriate color on the affected teeth. Mix the pigment according to the color, apply a thin layer evenly, blow dry slowly, then bake, and fix to the affected tooth after the color comparison is satisfactory. Because the cast ceramic has transparency, it needs to be fixed with a colored cement. You can choose a different color when cementing, and finally adjust the color of the ceramic braces. Ceramic dental braces have their advantages compared with metal porcelain braces. The edge of the metal inner crown of the porcelain braces is in contact with the teeth. The biocompatibility is not as ideal as that of ceramic materials. Good aesthetic effect, it is an important development in the field of dental cosmetology in recent years.

Advantages of ceramic knife: 1.High quality Super high hardness, high temperature resistance, corrosion resistance, extremely sharp, not easy to wear, and never rust. After cutting food with a metal knife such as stainless steel, the natural taste of the food will be destroyed. This phenomenon will not occur with a ceramic knife. 2.Health Made of biomedical materials, free of heavy metal elements such as nickel and chromium. No contact with skin. The ceramic material is extremely chemically stable, resistant to acid and alkali, and will never rust and discolor. Does not have any chemical reaction with the food, keeping the food fresh and delicious. The blade body is sintered at a high temperature of 1700 ° C. It is fully dense, non-porous and non-magnetic. Not sticky when used, easy to clean and antibacterial. 3. Anti-oxidation, no smell When using a metal knife to cut food, some foods are prone to oxidation, which will greatly damage the original taste of the food. Some foods can't even be cut with a metal knife to avoid chemical reactions, produce harmful substances, and endanger physical health. The ceramic knife effectively avoids the above situation. Its inherent material advantages will not cause chemical reactions with any food and maintain the original pure flavor of the food. 4, good use The easy-grip handle designed according to ergonomic principles makes it easy, safe and comfortable to use. The color is round, pure, and jade, adding noble enjoyment. The edge of the ceramic knife is not attacked by acids, juices, salt, oil a

Advanced ceramics are also called fine ceramics, high-tech ceramics, and so on. Advanced ceramics are different from traditional ceramics. Advanced ceramics use artificially synthesized high-purity ultra-fine powders as raw materials. They are formulated according to selected ingredients. They are manufactured by molding, sintering and other processes under very strict process conditions. of. Most of them belong to polycrystalline sintered bodies, and there are various forms such as single crystal thin films, fibers, and amorphous ceramics. The disadvantages of traditional ceramics are high strength, but great brittleness, poor reliability, and very difficult machining and welding. Advanced ceramics have high strength, wear resistance, light weight, high temperature resistance, corrosion resistance, and have special properties in many aspects such as sound, electricity, light, heat, and magnetism. Therefore, advanced ceramics have a wide range of applications, from integrated circuit substrates, capacitors, transformers, sensors to magneto-fluid generator electrodes; from artificial teeth to bioreactors, they are used in all fields of modern science and technology. The scope of application is any material Can not be compared, so it has the reputation of "universal material". As the advanced ceramics used as structural materials, most of the domestic and foreign developments are silicon nitride, silicon carbide, zirconia and alumina ceramics. Silicon nitride ceramics have excellent properties such as high temperature resistance, high thermal shock resistance, low temperature creep, high wear resistance, corrosion resistance, and low specific gravity. They are the most promising high temperature materials for heat engines. Silicon car

Alumina is often used as the main core material in the production of various ceramics. Alumina ceramic manufacturers claim that this material not only has good resistance in use, but also has good conductive properties, high strength, abrasion resistance, and resistance to corrosion. ability. Relying on these advantages of materials, the quality of various ceramic products is continuously improved. The following high-quality alumina ceramic manufacturers will analyze the three major characteristics of alumina ceramics for everyone: First, light weight Although the alumina ceramics has good hardness and good tolerance, but the overall weight is lighter, it can be more conducive to making different crafts or important internal parts of the product, without increasing the weight of the product itself, and improving the quality performance in use . Alumina ceramic manufacturers claim that because of this light weight, they can reduce the overall load of the equipment for processing and molding, and can more effectively control the use between different products. Second, good hardness Alumina ceramic manufacturers claim that the reason why alumina can be widely used in medicine and tool or ceramic industry for processing is mainly because the material has good performance characteristics in terms of hardness, which improves the wear resistance of the product, and the stability of alumina ceramic sintering and molding. It is good and has high strength. It can show good hardness without deformation or damage under the compression of large pressure or mechanical energy. Third, high temperature resistance Alumina ceramic manufacturers clai

Recently, 5G communication has been spread all over the country, and China will soon usher in the 5G era. Then it represents that the back cover of zirconia ceramics is about to be popular. Let `s take a look at the comparative information between ceramic materials. With the official release of Xiaomi's all-ceramic mobile phone MIX, the zirconia all-ceramic body has attracted widespread public attention. Xiaomi MIX not only uses ceramic on the back cover, but also ceramics on the bezel, which fully verifies the excellent performance of ceramics and announces the era of ceramic integrated mobile phone body. 5G communication uses a wireless spectrum above 3 GHz, and the antenna structure will be more complicated than 4G. The existing antenna layout structure cannot meet the needs of 5G. Therefore, in the 5G era, smartphones will abandon the existing metal back cover for signal shielding and use non-metal materials instead. Comparison of non-metal materials: There are two solutions of ceramic back cover and glass back cover in non-metallic materials. The dielectric constant of the zirconia ceramic back cover is 3 times that of sapphire and 10 times that of tempered glass, and the signal penetration is good. At the same time, ceramics can also be doped with some rare metals to make them more resistant to drop than glass. In addition, ceramics are superior to glass in terms of color brightness and touch. At the previous conference of ceramic materials for mobile phones of the third ring, engineers also used data to prove some of the excellent properties of zirconia ceramics: the bending strength is twice that of glass, the fracture toughness is 10 times tha

Super ceramics can be divided into iron oxide ceramics, alumina ceramics, titanium oxide ceramics, silicon oxide ceramics, silicon carbide ceramics, and cermets according to the composition of raw materials. The application range of special ceramics has expanded from capacitors, filters, igniters, thermal insulation materials, medical equipment and communication components to high-tech fields such as aerospace, satellites and semiconductor chips. The research and production of special ceramics in China have developed a lot in the past 20 years, but they are still far from developed countries in terms of practical application, production level and industrialization. At present, foreign special ceramics can be divided into iron oxide ceramics, alumina ceramics, titanium oxide ceramics, silicon oxide ceramics, silicon carbide ceramics, and cermets according to the composition of raw materials. The application range of special ceramics has expanded from capacitors, filters, igniters, thermal insulation materials, medical equipment and communication components to high-tech fields such as aerospace, satellites and semiconductor chips. According to forecasts, the world's special ceramics have been growing at a rate of 15% to 20% since 2000, and sales in 2010 are expected to reach about 150 billion US dollars. In recent years, the Chinese Academy of Sciences has developed new nano-ceramics, and foun

Ceramics can be seen everywhere in people's lives, and it is the heritage of China's long history. The history of the development of ceramics is an important part of the history of Chinese civilization. As one of the four ancient civilizations, China has made outstanding contributions to the progress and development of human society. The invention and development of ceramics have more unique significance. Different dynasties and generations in Chinese history have different artistic styles and different technical characteristics. So what is the relationship between ceramics and talc? Talc is a fine powder that is pure white, silvery white, pink or light yellow. Talc powder is made by selecting, crushing and drying talc. Soft and slippery, it is a typical flaky filler. It has good electrical insulation properties, good heat resistance and non-thermal conductivity, stable chemical properties, has no effect on strong acids and alkalis, strong oil absorption and hiding power. In the ceramic industry, talc has an extremely important role. An important factor in the different colors of ceramics is the addition of talc. Different proportions and the proportion of different ingredients can make ceramics show different colors and enhance the whiteness of ceramics after calcination. Uniform density, good gloss and smooth surface. In addition to the production of special block talc porcelain, it is also widely used; talc powder is combined with porcelain clay to produce special ceramic products with various properties. For example: 15% talc powder for daily-use ceramics (tableware) is tough, translucent, and bright in color, and 40-80% talc powder for building ceramics (tiles, tiles, porcelain, etc.) has minimal thermal and wet expansion. It has the characteristics of high strength, high intensity, no cracking and beautiful color. Different kinds of tal

A faucet is a tool for daily use at home. It is related to the water used by the family. A good quality faucet can save a lot of worry. Which type of faucet is different, which one should we choose? The ceramic valve core will not have a bad impact on the human body, because it is a natural material, which is very good in quality. In practice, it is very strong, not easy to loose, not easy to leak, and the water is very smooth No water cuts will happen. Nowadays, the faucet spools commonly used in many families are made of ceramic spools. These include hot and cold water mixing valves, such as basins, sinks, and shower faucets. The range of applications for ceramic spools is very wide. Some old single-cold faucets and commonly used valve spools are still copper spools. Copper spools are not as durable as ceramic spools. Ceramic spools are more abrasion resistant than copper spools and will not damage healthy water quality due to rust. At the same time, in the actual use process, the quality of the ceramic valve core is relatively good, very strong, not easy to loose, and there will be no leakage. The use will make it wear out and cause water leakage. Now the copper spool is slowly exiting the market. Tips for buying ceramic spools 1. View the quality inspection certificate. When buying, it is best to ask the salesperson for the faucet quality inspection certificate. 2. Check the coating. The plating of the faucet is very important. After grinding and polishing the faucet, the surface will be plated with nickel or chromium. This is to prevent the faucet from being oxidized. You can perform hydrochloric acid experiments on the faucet to see if the faucet is rusted within a certain period of time.

At present, China mainly uses silicon powder direct nitriding to produce silicon nitride powder. This traditional technology produces high content of powder impurities, high power consumption, low efficiency, and is not easy to form large-scale production. In view of this, nanotechnology experts began. From the gas phase method research to find a way out, that is, through the high-temperature gas phase reaction, one-step ultra-fine powder is produced. In the gas phase method, the plasma arc-gas phase synthesis technology is considered to be the current advanced technical expert identification, which is designed and developed by the company. There are four innovations in the production line: the plasma arc three-stage compression technology makes the diameter of the plasma beam limited to less than 10 mm, which is conducive to energy concentration. Secondly, the designed multi-component rapid synthesis device ensures a multi-ambient atmosphere. Chemical vapor phase synthesis in the plasma arc temperature zone; third, the design of nitrogen cooling wells can effectively prevent the growth of powder particles during the gradient cooling wall collection process; Fourth, the gas-solid separation technology and electrostatic collection technology, Increased collection rate of nano-silicon nitride powder Nano-silicon nitride powder prepared by these techniques, with an average particle size of 20 nm, pure According to reports, in this production line, nano-silicon carbide, silicon carbonitride, titanium carbonitride and other powders can be produced. After several months of trial production, nanometer nitriding is produced every hour. Compared with similar products, the high efficiency of silicon powder of more than 5 kg, the production cost is greatly reduced, and the price has a strong competitive advantage. silicon nitride semiconductor industry information