Green silicon carbide powder for polishing optical glass W28W14W7W5W3.5
The production method of green silicon carbide powder is basically the same as that of black silicon carbide, but the requirements for raw materials are different. Green silicon carbide is made of petroleum coke and high-quality silica as the main raw materials, adding salt as an additive, and smelted at high temperature in a resistance furnace. The smelted crystal has high purity and high hardness. Its hardness is between corundum and diamond, and its mechanical strength is high. higher than corundum.
| product name | Green silicon carbide | |
| granularity | Various granularity | |
| SiC | 99.2% | |
| Fe2O3 | ≤0.10% | |
| F.C | ≤0.20% | |
| Melting point (°C) | 2250 | |
| Operating temperature (°C) | 1900 | |
| proportion | 3.90g/cm3 | |
| Moh’s hardness | 9.4 | |
| Application of green silicon carbide | 1, Pipe wear-resistant layer/aero-engine wear-resistant layer 2. Auxiliary materials for the production of diamond tools/ink sheets/dry grinding sheets 3. High-hardness steel tool grinding for precision tool grinding and polishing, grinding powder for single and double-sided grinding 4. For functional ceramics/functional ceramic stone/honeycomb ceramics/building ceramics 5. For high-hardness silicon wafer cutting/wire cutting/photovoltaic wire cutting 6. For bearing processing/bearing ultra-fine processing and grinding 7. For processing ceramic heat sink/ceramic filter screen/ceramic membrane 8. Flat double-sided grinding and polishing machine coarse grinding and fine grinding grinding media 9. Carbide sandblasting and grinding, metal grinding and polishing, for tombstone carving 10. Whetstone/grinding stone/sharpening stone/brush roller production 11, Optical glass/stone polishing/marble polishing wheel/gemstone polishing/polishing disc polishing 12, optoelectronic industry, monocrystalline silicon/polysilicon/piezoelectric crystal and other electronic engineering multi-wire cutting grinding | |
| Production granularity | Granular sand | 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220# 240 # |
| W mark | W63 W50 W40 W28 W20 W14 W10 W7 W5 W3.5 W2.5W1.5 W1 | |
| Gb | 240# 280# 320# 400# 500# 600# 800# 1000# 1200# 1500# 2000# 2500#3000 # | |
| Day standard | #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000#8000 #10000 | |
| European standard | F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500F2000 | |
| Green silicon carbide | 1Abrasive–mainbaiIt is because silicon carbide hasduHigh hardness, chemical stability and certain toughnesszhi, so carbondaoSilicon can be used to manufacture consolidated abrasives, coated abrasives and free grinding to process glass, ceramics, stone, cast iron and some non-ferrous metals, cemented carbide, titanium alloys, high-speed steel tools and grinding wheels. 2. Refractory materials and corrosion-resistant materials — mainly because silicon carbide has a high melting point ( decomposition ) , chemical inertness and thermal shock resistance, so silicon carbide can be used in abrasive tools and ceramic products firing kilns A variety of silicon carbide ceramic products such as shed boards and saggers, silicon carbide bricks for vertical cylinder distillation furnaces in the zinc smelting industry, aluminum electrolytic cell linings, crucibles, and small furnace materials. 3. Chemical use – because silicon carbide can be decomposed in molten steel and react with ionized oxygen and metal oxides in molten steel to form carbon monoxide and silicon-containing slag. Therefore, it can be used as a purifying agent for smelting iron and steel, that is, as a deoxidizer for steelmaking and a modifier for cast iron structure. This generally uses low-purity silicon carbide to keep costs down. At the same time, it can also be used as a raw material for the manufacture of silicon tetrachloride. 4. Electrical purposes – used as heating elements, non-linear resistance elements and high semiconductor materials. Heating elements such as silicon carbide rods ( suitable for various electric furnaces operating at 1100-1500 °C ) , non-linear resistance elements, and various lightning protection valves. 5. Others are formulated into far-infrared radiation coatings or made into silicon carbide silicon plates in a far-infrared radiation dryer. | |
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