Production of auxiliary materials for knife heads: green silicon carbide powder 400 mesh, 600 mesh 700 mesh
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, smelting by high temperature resistance furnace, the crystals smelted into high purity and hardness, its hardness is between corundum and diamond, and the mechanical strength is higher than corundum.
| Name | Green silicon carbide | |
| granularity | Multiple granularity | |
| SiC | 99.2% | |
| Fe2O3 | ≤0.10% | |
| F.C | ≤0.20% | |
| Melting Point(°C) | 2250 | |
| Operating temperature(°C) | 1900 | |
| specific gravity | 3.90g/cm3 | |
| Mohs hardness | 9.4 | |
| Green silicon carbideuse | 1. Pipeline wear-resistant layer/aero-engine wear-resistant layer 2, diamond tools/ink flakes/dry grinding sheet production accessories 3. Precision tool grinding and polishing with high hardness steel tool grinding, single and double side grinding with grinding powder4. Functional ceramics/functional ceramics, stone/honeycomb ceramics/architectural ceramics5. High hardness silicon wafer cutting/wire cutting/photovoltaic wire cutting 6. Bearing processing/bearing ultra-fine processing and grinding 7. For processing ceramic heat sink/ceramic filter/ceramic membrane 8. Flat double-sided grinding and polishing machine coarse grinding fine grinding medium 9, Carbide sandblasting grinding, metal grinding and polishing, tombstone carving 10, oil stone/grinding stone/grinding stone/brush roll production 11, Optical glass/stone polishing/marble polishing wheel/gemstone polishing/polishing disc polishing 12. Optoelectronics industry, multi-wire cutting and grinding in electronic engineering such as single crystal silicon/polycrystalline silicon/piezoelectric crystal | |
| Production granularity | grain size 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 | |
| National standard | 240# 280# 320# 400# 500# 600# 800# 1000# 1200# 1500# 2000# 2500#3000# | |
| Japanese 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 | 1. Abrasives – mainly because silicon carbide has high hardness, chemical stability and certain toughness , so silicon carbide can be used to make bonded abrasives, coated abrasives and free grinding, thus To process glass, ceramics, stone, cast iron and some non-ferrous metals, hard alloys, titanium alloys, high-speed steel tools and grinding wheels, etc. 2, refractory materials and corrosion-resistant materials—Mainly because silicon carbide has a high melting point(Decomposition), chemical inertness and thermal vibration resistance, so silicon carbide can be used in abrasives, ceramic products firing kiln used in the shed and box, zinc smelting industry vertical cylinder distillation furnace silicon carbide bricks, aluminum electrolytic cell lining, crucibles, small furnace materials and other silicon carbide ceramic products. 3, chemical use–Because silicon carbide can decompose in molten steel and react with oxygen separation and metal oxides in molten steel to form carbon monoxide and silicone-containing slag. Therefore, it can be used as a purifying agent for smelting steel, that is, as a deoxidizer for steelmaking and a cast iron structure improver. This generally uses low-purity silicon carbide to reduce costs. At the same time, it can also be used as a raw material for the manufacture of silicon tetrachloride. 4, electrician use–Used as heating elements, nonlinear resistance elements and high semiconductor materials. Heating elements such as silicon carbon rods(Applies to1100～1500℃Various electric furnaces for work), nonlinear resistance elements, various lightning arresting valve plates. 5, other formulated into far-infrared radiation coating or made of silicon carbide silicon board with far-infrared radiation dryer. | |
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