Carborundum, also known as silicon carbide (SiC) is made of quartz sand, petroleum coke (or char), wood chips (the production of green silicon carbide need to add salt) and other raw materials through high temperature resistance furnace smelting. Silicon carbide also exists in nature, a rare mineral, Moissanite. Silicon carbide, also known as carbon silica. In the contemporary C, N, B and other non-oxide high-tech refractory raw materials, silicon carbide is the most widely used, the most economical kind, can be called grit or refractory sand. At present, China's industrial production of silicon carbide is divided into two kinds of black silicon carbide and green silicon carbide, are hexagonal crystals, the proportion of 3.20 ~ 3.25, micro-hardness of 2840 ~ 3320kg / mm2.
Abrasives are tools used for grinding, grinding and polishing. They are fine grinding and polishing tools for improving the polishing of stone plates. Most of the abrasives are man-made abrasives made of abrasive and bonding agent. Machinery and other metal processing industries are widely used, but also for food processing, paper industry and ceramics, glass, stone, plastic, rubber, wood and other non-metallic materials processing. Most of the domestic use of alumina as the main raw material, but the polished stone plate gloss and clarity are lower, and the service life is not long, so the development of a natural, longer life, lower cost of emery Abrasives is a problem to be solved.
This article introduces you to a natural, longer life, lower cost diamond abrasive: the proportion of raw materials: phenolic resin powder 45% -50%, butyral 8% to 10%, rare earth 4% -8 , Silicon carbide 18% -30, oxide 5% -6, additive 3% -5. The rare earth, silicon carbide and other raw materials for pretreatment: According to the ratio of raw materials for ingredients, stir; the raw materials and additives into the abrasive temperature pressing to complete the pressing process curing, and bonding as required.
Compared with the existing grinding tools, the natural diamond abrasive made by the above raw materials and processes has the characteristics of strong self-willedness, high finish, few and shallow sand marks, fine and uniform grinding surface, and the like, and can improve product quality while grinding time Short, high efficiency, low prices, longer life expectancy.
