Important Standards of High-grade Silicon Carbide Abrasives

A: The cleanliness: Put abrasive grains in the water glass for stirring, and check whether the water is clear or cloudy, and the presence of suspended solids. If the surface cleanliness of abrasive grains is poor, even good binder can not help.

B: The chemical content of abrasive grains:

Chemical content = Abrasives purity

The content of silicon carbide (p12-220) > 99.50%

The content of silicon carbide (p240-400) > 99%

The content of silicon carbide (p500-1200) > 98.50%

The content of silicon carbide (1500-3000) > 98.00%

Ferric oxide < 0.15%

The free carbon < 0.15%

Magnetic material < 0.005

C: The particle shape of abrasive grains

If people only want grinding efficiency, not the degree of finish, the more needle-like and sheet abrasives the better. If people want both grinding efficiency and the degree of finish, there may need more abrasives with polyhedron shapes.

D: As long as there is one that does not comply with the above standards, they are low abrasive grains. Other indicators (such as particle size, etc.) can be done according to customer's requirements.