記述 the action principle of silicon carbide abrasive sand

Silicon carbide abrasive sand is a commonly used abrasive, it has a wide range of applications. The action principle of abrasive sand can be summed up in the following aspects: particle grinding, surface activity, thermal conductivity and oxidation resistance.Particle grinding refers to the small precipitation and deformation of the surface of the workpiece through friction and impact force when the abrasive sand particles are in contact with the surface of the workpiece. This grinding effect can reduce the roughness of the workpiece surface and improve its finish. The hardness of the silicon carbide abrasive sand particles is very high, so it can be more effective in grinding a variety of materials, including metals, ceramics and plastics.Silicon carbide abrasive sand has a high surface activity. It is able to chemically react with other substances, such as physical adsorption and chemisorption. This property makes the silicon carbide abrasive sand in the grinding process can better contact with the workpiece surface, and accelerate the removal of materials and surface leveling. Therefore, silicon carbide grinding sand is often used in high-precision grinding, polishing and fine grinding processes.Silicon carbide grinding sand has a high thermal conductivity. This means that the abrasive sand is able to transfer the heat generated by friction to the surrounding environment more quickly during the grinding process, avoiding the situation of overheating the workpiece. The high thermal conductivity helps to improve the heat dissipation performance of the grinding sand, allowing it to work stably for a long time. In addition, thermal conductivity prevents the material from undergoing phase changes or damage due to excessive temperature.Silicon carbide abrasive sand has good oxidation resistance. In the process of high temperature or high speed grinding, grinding sand particles will face the risk of oxidation. However, the silicon carbide material has excellent oxidation resistance and can resist the oxidation reaction at high temperature, extending the service life of the grinding sand and maintaining the stability of the grinding effect.