Black silicon carbide powder uses

Black silicon carbide powder is a type of silicon carbide abrasive and is generally black in color. What are the uses of black silicon carbide powder?

Sic powder introduction

1. Silicon carbide is also called moissanite. It can be called emery sand or refractory sand. Black silicon carbide has a metallic luster, contains more than 95% SiC, and is stronger than green silicon carbide, but has lower hardness. It is mainly used for grinding cast iron and non-metallic materials.
2. The industrial production method of silicon carbide is to use high-quality quartz sand and petroleum coke to be refined in a resistance furnace. The silicon carbide blocks obtained are made into products of various particle sizes through crushing, acid and alkali washing, magnetic separation, and screening or water separation.
3. Black silicon carbide contains about 98.5% SiC, and its toughness is higher than green silicon carbide. It is mostly used to process materials with low tensile strength. Silicon carbide is very hard and has excellent thermal conductivity. It is a semiconductor. At high temperatures, Can resist oxidation.
4. Due to its stable chemical properties, high thermal conductivity, small thermal expansion coefficient, and good wear resistance, black silicon carbide has many other uses besides being used as an abrasive. It is used to make high-grade refractory materials that are thermal shock resistant and small in size. , lightweight and high strength, good energy saving effect.

Uses of black silicon carbide powder

1. Abrasives: Black silicon carbide in foreign light industries are mainly used as abrasives. Because black silicon carbide has a high attitude and certain toughness, it is mostly used for grinding and polishing optical glass, cemented carbide, titanium alloy and bearing steel, sharpening high-speed steel tools, etc.; black silicon carbide is mostly used for cutting. and grinding materials with low tensile strength.
2. Refractory material: Black silicon carbide has good thermal shock resistance, so it is a high-quality refractory material. According to the production process of the product, it can be divided into recrystallized black silicon carbide products, high-temperature hot-pressed products, products with silicon nitride or clay as the binding agent, etc. The main products and uses are high-temperature furnace components and supports.
3. Electrical smelting industry: In addition to being used as furnace linings in various smelting furnaces, it is also used as a deoxidizer for steelmaking, a structural improver for cast iron, etc. The chemical composition requirements of the release agent black silicon carbide are: Compared with the traditional steelmaking process that uses coke and silicon powder for dispersion and deoxidation, the use of a release agent has the advantages of good steel quality and a good working environment.
4. Other fields: Electrical industry, black silicon carbide materials are also widely used as electric heating elements, high-temperature semi-superconductor materials, far-infrared panels, arrester valve materials, etc.