The pre-treatment stage of the sand blasting process refers to the treatment of the workpiece surface before the workpiece is sprayed and sprayed with a protective layer. The quality of the sandblasting process before and after treatment affects the adhesion, appearance, moisture resistance and corrosion resistance of the coating. The pretreatment is not done well, and the rust will continue to spread under the coating, causing the coating to peel off. The carefully cleaned surface is compared with the general simple cleaned workpiece by coating.
Silicon carbide is a non-metallic non-mineral product produced by using quartz sand (SiO2) and anthracite or petroleum coke (C) as basic raw materials in a resistance furnace at a high temperature of 1800 degrees Celsius or above. Silicon carbide. Black silicon carbide is a non-metallic mineral product produced by using quartz sand (SIO2) and anthracite or petroleum coke (C) as basic raw materials under high temperature above 1800 degrees Celsius.It has high hardness, small expansion coefficient, brittleness, and thermal conductivity. Good features, widely used in abrasives, electronic products grinding, refractory materials, special ceramics, foam ceramics, coatings and plastics addition and modification, automotive parts, military aviation, steelmaking deoxidants, etc. Black silicon carbide granular sand, also known as F sand, is a coarse-grained and powdered abrasive produced in accordance with national standards / FEPA standards / Japanese JIS standards / American ANSI standards. It is harder and more brittle than brown and white alumina. Compared with green silicon carbide, black silicon carbide is more human. The black silicon carbide grain sand produced by our company has few clean impurities, good toughness, concentrated grain size, strong self-sharpness, and high grinding ratio, and is an excellent abrasive material.
General physical and chemical indicators:
Specific gravity: ≧ 3.15 g / cm3
Bulk density: 1.20-1.60 g / cm3
Mohs hardness: ≧ 9
Melting point: 2700 degrees Celsius
Granularity standard: F8-F220
Main uses of black silicon carbide:Ceramic grinding wheels and resin grinding wheels, production of other consolidated and coated abrasives, foundry materials, welding materials, wear-resistant flooring, wear-resistant floor blasting, etched etching of metal and non-metal surfaces, other metal and non-metal surfaces Free grinding, sandblasting and polishing