Black carborundum P series Properties and Usage

Black carborundum P series Properties and Usage

Black carborundum P series has special requirements for the production requirements of coated abrasives and the particle shape, particle size distribution and other indicators of the abrasive. In the black silicon carbide P-Grit sand making process, chemical treatment and water washing processes ensure the abrasive has good cleanliness and low conductivity.

Properties of black carborundum P series:

1. High hardness and good toughness

Black carborundum abrasive itself has a very high hardness, with a Mohs hardness of about 9.2. During the grinding process, it can quickly cut the surface of the workpiece and effectively remove materials. At the same time, it also has good toughness. The SiC particles are not easy to break during grinding, and can maintain sharpness for a long time, ensuring the efficiency and quality of grinding.

2. Uniform particle size

The requirements for large and fine particles in the standards of black carborundum P series are stricter than those of F series. This can ensure that the abrasive that plays a grinding role on the surface of the coated abrasive can play a better grinding effect.

3. Special particle shape

The particle shape of black SiC P- Grit sand is not as round as F sand, but presents a long strip shape. In this way, one end of the particle adheres to the substrate and the other end for grinding. That can improve the uniformity of grinding.

4. Less dust and high cleanliness

Washing the black carborundum by water reduces the dust and impurities on the surface of the particles. Therefore, it is conducive to the bonding of the abrasive and the binder, and there will be no sand falling.

5. Good self-sharpening

During the grinding process, the black carborundum P sand will continuously produce new sharp edges due to wear. This self-sharpening property enables the abrasive tool to maintain stable grinding performance throughout the entire use process, without the need to frequently replace the abrasive tool. So it improves processing efficiency and reducing production costs.

6. Good heat dissipation

A large amount of heat will be generated during the grinding process, and black silicon carbide P sand has good thermal conductivity, which can quickly dissipate the heat, avoiding deformation, burns and other defects of the workpiece due to excessive local temperature, and ensuring processing accuracy and surface quality.

7. Strong chemical stability

It has good chemical stability, acid and alkali resistance, and is not easy to react with most chemicals. This allows it to maintain stable performance in some special processing environments or grinding processes that require the use of chemical coolants, and will not affect the grinding effect due to chemical corrosion.

Uses of black carborundum P sand:

The use of black carborundum P series is highly professional and is mainly used in coated abrasives such as sandpaper, sandpaper, abrasive brushes, and sponge sand blocks. Other fields such as sandblasting, bonded abrasives, and wear-resistant fillers all use black silicon carbide F series.
Coated abrasives made of black silicon carbide P-Grit are mainly used for grinding surface treatment of materials such as marble, concrete, stone, and glass, and are also used for grinding burrs on non-ferrous metals or paint surfaces.

The particle size distribution of Black carborundum P series：