silicon carbide
details：
black silicon carbide
sic is produced by the reaction of quartz sand and a carbon carrier in the electric resistance furnce. the cf10 are carefully selected the most compact crystal structure sic roll near the core. after perfect acid treatment and water washing after crushing, the free carbon content and iron content of grains are reduced to minimum then the shining pure crystal is imparted cf10 has blocky grains shape with very sharp cutting edges, could apply to cutoff wheel and grinding wheel and abrasive stone for working on plastic, stone, ceramic, glass and nonferrous metals.
