Category: Stone Tools - Abrasive Materials
Location: China
Brand:
China Black silicon carbide manufacture
Black Silicon carbide Grain is an extremely hard and 99 SiC carborundum grit. As an abrasive material, it can work well for abrasive blasting, surface treatment, grinding on hard material such as marble, glass, jade, etc.
Silicon Carbide is produced by a process involving the electrochemical reaction of silica(SiO2)-in the form of quartz mixed with Carbon(C) in the form of raw petroleum coke. The stoichiometric mixture is reacted in an electrical resistance furnace at a temperature up to 2500 centigrade to yield high-quality crystals. The process is large furnace technology with a graphite electrode in the furnace center. The large crystals are then segregated, crushed, cleaned of magnetic impurities in high-intensity magnetic separators, and classified into narrow size fractions to suit the end-use. Dedicated lines produce products for different applications.
China Black silicon carbide manufacture Properties:
1. High hardness and good grinding ability
2. low density
3. low thermal expansion, oxidation resistance
4. excellent chemical resistance
5. high thermal shock resistance
6. high wear and hardness resistance
7. high strength, high temperature resistance
8. high temperature strength
China Black silicon carbide manufacture Applications:
Blasting, surface Treatment, Rust Removal
Polishing and deburring
Grinding wheels
Wear resistance parts
TYPICAL CHEMICAL ANALYSIS
SiC ≥98
SiO2 ≤1
H2O3 ≤0.5
Fe2O3 ≤0.3
F.C ≤0.3
Magnetic content ≤0.02
TYPICAL PHYSICAL PROPERTIES
Hardness: Mohs:9.2
Melting Point: dissociated at about 2300 °C
Maximum service temperature: 1900℃
Specific Gravity: 3.2-3.45 g/cm3
Bulk density(LPD): 1.2-1.6 g/cm3
Color: Black
Particle shape: Hexagonal
Modulus of Elasticity 58-65x106 psi
Coefficient of Thermal Expansion 3.9-4.5 x10-6/ ℃
Thermal Conductivity 71-130 W/MK
AVAILABLE SIZES
F-macrogrits sizes bonded
Grit designation Mean diameter in um
F12 1765
F14 1470
F16 1230
F20 1040
F22 885
F24 745
F30 625
F36 525
F40 438
F46 370
F54 310
F60 260
F70 218
F80 185
F90 154
F100 129
F120 109
F150 82
F180 69
F220 58
