On 2018-08-08 14:48:54
Which component determines the hardness of green silicon carbide powder
Green silicon carbide powder is widely used in many chemical industry and cutting engineering because of its Mohs hardness of 9.3-9.5. However, you may not know the hardness of green silicon carbide powder due to its silicon content. Manager Zhang of green silicon carbide powder workshop of Jinmeng new material will introduce it to you.
1. The content of silicon in the green silicon carbide powder determines its hardness. The particle size of silicon carbide has a great influence on WEDM, but the most important is the particle shape of silicon carbide. Green silicon carbide is made of petroleum coke and high-quality silica as the main raw materials, adding salt as additive, through high-temperature smelting in resistance furnace. Its hardness is between corundum and diamond, and its mechanical strength is higher than corundum;
2. Green silicon carbide powder is green with crystal structure, high hardness, strong cutting ability, stable chemical property and good thermal conductivity. The microhardness of silicon carbide is 9.2, that of Vickers is 3000-3300 kg / mm, that of Knoop is 2670-2815 kg / mm, and that of 3300 kg / mm.