yixing haiyu refractory co.,ltd |
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green sic 99% steel making cast refractories superfine higher hardness green powder electronic components
Product name: green carborundum
Specification: 1000#
Green silicon carbide is made of quartz sand, petroleum coke ( or
coal coke ), sawdust ( salt is needed to produce green silicon
carbide ) and other raw materials by high temperature smelting in
resistance furnace. At present, silicon carbide micropowder is
mainly 1200 # and 1500 #.Since silicon carbide micropowder is
mainly used in the abrasive industry, there are special
requirements for the classification of micropowder. There can be no
large particles in the micropowder. Therefore, professional
equipment is generally used for high-precision classification in
production.
Performance characteristics :
Green silicon carbide powder is green, crystal structure, high
hardness, strong cutting ability, stable chemical properties and
good thermal conductivity. The microscopic shape is hexagonal
crystal. The Mohs hardness of silicon carbide is 9.2, the Vickers
hardness is 3000-3300 kg / mm2, the Knoop hardness is 2670-2815 kg
/ mm, and the microhardness is 3300 kg per cubic millimeter. In the
abrasive, it is higher than corundum and second only to diamond,
cubic boron nitride and boron carbide. The density is generally
considered to be 3.20 g / cubic millimeter, and the natural bulk
density of the silicon carbide abrasive is between 1.2-1.6 g /
cubic millimeter, and the specific gravity is 3.20-3.25. Green
silicon carbide is made from petroleum coke and high-quality silica
as the main raw materials, adding salt as an additive, and smelted
by resistance furnace at high temperature. Its hardness is between
corundum and diamond, and its mechanical strength is higher than
corundum.
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particle-size reconciliation:
Particle size | μm | Particle size | μm |
16 | 800 | 360 | 40 |
24 | 700 | 400 | 38 |
36 | 420 | 500 | 28 |
46 | 320 | 600 | 23 |
60 | 250 | 800 | 18 |
80 | 180 | 1000 | 13 |
100 | 150 | 1200 | 10 |
120 | 120 | 1500 | 8 |
150 | 106 | 2000 | 6.5 |
180 | 80 | 2500 | 5 |
200 | 75 | 3000 | 4.5 |
220 | 65 | 4000 | 3 |
240 | 60 | 6000 | 2 |
280 | 50 | 8000 | 1.5 |
320 | 45 | 10000 | 1 |