Black silicon carbide (C) is produced by petroleum coke, quality silicon sand and appended with salt in an electric arc furnace at high temperatures. The hardness and brittleness are lower than that of green silicon carbide. The materials are used to grind cast iron, non-ferrous metals, rubber, leather, plastic, wood, mineral rocks, etc. It can also be used to manufacture high-class refractory products.
Green silicon carbide (GC) is produced by petroleum coke, quality silicon sand and appended with salt in an electric arc furnace at high temperatures. The hardness is higher than synthetic corundum, but lower than diamond. Mechanical strength is higher than corundum. The materials are used to grind hard and brittle metal, non-ferrous metals like copper, brass, aluminum and magnesium, and non-metallic materials such as gem, optical glass, ceramics, etc.
|
Chemical Composition ( GB/T 2480-2008 ) |
|
Type |
Grit |
Chemical composition(%,by weight) |
|
SiC |
F.C |
Fe2O3 |
|
C |
F4-F90 |
≥98.60 |
≤0.20 |
≤0.40 |
|
F100-F150 |
≥98.10 |
≤0.25 |
≤0.50 |
|
F180-F220 |
≥97.20 |
≤0.30 |
≤0.55 |
|
F230-F280 |
≥97.20 |
≤0.30 |
≤0.55 |
|
F320-F500 |
≥97.00 |
≤0.35 |
≤0.60 |
|
F600-F800 |
≥96.50 |
≤0.40 |
≤0.60 |
|
F1000-F1200 |
≥95.50 |
≤0.50 |
≤0.70 |
|
C-P |
P12-P100 |
≥98.60 |
≤0.20 |
≤0.40 |
|
P120-P150 |
≥98.10 |
≤0.25 |
≤0.50 |
|
P180-P220 |
≥97.20 |
≤0.30 |
≤0.55 |
|
P240-P360 |
≥97.20 |
≤0.30 |
≤0.55 |
|
P400-P1000 |
≥97.00 |
≤0.35 |
≤0.60 |
|
P1200-P1500 |
≥96.50 |
≤0.40 |
≤0.60 |
|
P2000-P2500 |
≥95.50 |
≤0.50 |
≤0.70 |
|
Chemical Composition ( GB/T 2480-2008 ) |
|
Type |
Grit |
Chemical composition(%,by weight) |
|
SiC |
F.C |
Fe2O3 |
|
GC |
F4-F90 |
≥99.10 |
≤0.20 |
≤0.20 |
|
F100-F150 |
≥98.60 |
≤0.25 |
≤0.45 |
|
F180-F220 |
≥98.00 |
≤0.25 |
≤0.50 |
|
F230-F280 |
≥98.00 |
≤0.30 |
≤0.50 |
|
F320-F500 |
≥97.50 |
≤0.30 |
≤0.50 |
|
F600-F800 |
≥97.00 |
≤0.35 |
≤0.50 |
|
F1000-F1200 |
≥96.50 |
≤0.40 |
≤0.50 |
|
GC-P |
P12-P100 |
≥99.10 |
≤0.20 |
≤0.20 |
|
P120-P150 |
≥98.60 |
≤0.25 |
≤0.45 |
|
P180-P220 |
≥98.00 |
≤0.25 |
≤0.50 |
|
P240-P360 |
≥98.00 |
≤0.30 |
≤0.50 |
|
P400-P1000 |
≥97.50 |
≤0.30 |
≤0.50 |
|
P1200-P1500 |
≥97.00 |
≤0.35 |
≤0.50 |
|
P2000-P2500 |
≥96.50 |
≤0.40 |
≤0.50 |
Kumthai Abrasives Co., Ltd. is mainly engaged in manufacturing and exporting abrasive materials, refractory materials, sand blasting materials, coated abrasives, boron carbide products and polishing wheels. It presently has one set 3000kVA smelting furnace, two shotting production line, with complete production equipment for smelting, shotting, water scrubbing, acid cleaning and etc. The yearly output of artificial abrasive grain is 20000 tons.
Our plant also has two set production lines of high-end coated abrasives. Our complete product line allows to our customers to work with one supplier for every superficial finishing necessity. All kinds of non-woven abrasive and surface conditioning rolls, belts, discs and wheels produced for woodworking and metalworking industries suitable for all types of machines can be supplied in all grades and in different sizes.
