Черный карбид кремния P grit is the abrasive used for coated abrasives. Its raw material is the same as black silicon carbide F grit, which is the first grade silicon carbide lump from quartz sand and coke high temperature smelting. Black silicon carbide P grit has a SiC purity of 98% или больше, and is acid-washed before crushing, and the particles are sieved according to the standard P abrasive. The hardness of black silicon carbide is 9.2-9.3, slightly lower than green silicon carbide. It has higher hardness and toughness than corundum, good grinding power, and is suitable for grinding of various metal and non-metal materials.

Black Silicon Carbide P Grit Characteristics

The абразивы из карбида кремния used in the manufacture of abrasives have the following characteristics in addition to the good thermodynamic and physical properties of silicon carbide.

1. high purity, the guaranteed value of silicon carbide content is over 98%.
2. Black silicon carbide P Grit is acid washed in two passes, the first one is cleaning before crushing and the second one is cleaning after sieving, which removes the free carbon and free silicon produced during the smelting process, with less suspended matter and high cleanliness.
3. Black silicon carbide P Grit has good hydrophilicity, which is conducive to the degree of holding and bonding of the particles to the substrate.
4. P standard silicon carbide particle size distribution is more concentrated than F standard abrasives, and the abrasives coated with abrasives are only attached to a layer of the substrate, which requires the abrasives to participate in grinding as much as possible. The content of basic grains is high and the content of large grains is strictly controlled, while fine grains will increase the amount of desanding of abrasives, and the content of fine grains and dust should be as low as possible.
5. Silicon carbide abrasives for abrasive production require suitable bulk density, which is generally smaller than silicon carbide F Grit. The particle shape is multi-pronged or cone shaped, with strong grinding power.

Black Silicon Carbide P Grit Chemical composition

Physical indicators of black silicon carbide P Grit

Applications of black silicon carbide P grit

• Coated abrasives for stone glass, например наждачная бумага, наждачная бумага.
• Sponge sanding block, black diamond and other flexible abrasives.
• Can be used as raw materials for polishing wheels, wire drawing wheels, polishing grid sanding discs and other abrasives.
• Used for products such as skateboard wear-resistant surface sand, nail tools wear-resistant layer.
• Raw material for abrasive wire and abrasive brush.
• Used as raw material for polishing abrasives such as oil stone, sharpening stone and other tools.
• Direct grinding, such as gemstone agate, glass artwork polishing and grinding, так далее.

Common specifications of black silicon carbide P grit

Черный карбид кремния P, зерно: 16#,20#,24#,30#,36#,40#,50#,60#,80#,100#,120#,150#,180#,220#

Black silicon carbide P standard micro powder: 240#,280#,320#,360#,400#,500#,600#,800#,1000#,1200#,1500#,2000#,2500#,3000#,4000#,5000#

Black silicon carbide P grit grain size distribution

P-standard micropowder particle size composition standard

Packaging of black silicon carbide

• 25kg lined woven bags
• 25kg woven bags, 1 ton bag
• 25kg woven bag, 1 ton pallet
• 25kg paper bag, 1 ton pallet
• Other packaging can be customized according to customer requirements