There are many kinds of sandpaper on the market, as consumers, how do we choose sandpaper? Mainly from the following three aspects.
1. how to choose the sandpaper grit ?
The particle size of sandpaper refers to the size of the abrasive particle on its surface, and the finer the particle size, the smaller the wear on the surface. Generally, the finer the grit of the sandpaper, the more delicate the grinding effect. The particle size of sandpaper is expressed by "mesh", the larger the mesh number, meaning the higher the number of abrasive particles in the unit area, the smaller the abrasive particles, the finer the grit of sandpaper.
Conversely, the smaller the number, the larger the abrasive particles, the coarser. Common sandpaper particle size is 40-50 mesh, 60-100 mesh, 120-220 mesh, etc. Different grit sandpaper is suitable for different grinding needs. When choosing sandpaper, the appropriate particle size should be selected according to the condition of the surface to be treated.
2. how to choose the sandpaper material?
Abrasive is the main grinding part of sandpaper, common abrasives include alumina, silicon carbide, diamond and so on. Different materials of abrasive have different hardness and cutting force, which will affect the grinding effect and service life of sandpaper.
Alumina abrasive with high hardness and cutting force, suitable for metal, wood and other materials grinding; The hardness of silicon carbide abrasive is higher, which is suitable for grinding hard materials such as ceramics and glass; Diamond abrasive is one of the hardest natural materials, with very high wear resistance and high temperature resistance, suitable for processing ceramics, glass, cemented carbide and other materials.
3. how to choose the usage of the sandpaper ?
Different sandpaper is suitable for different materials and handling requirements. For example, metal sandpaper is suitable for grinding and polishing metal surfaces; Sponge sandpaper is suitable for grinding and polishing of various materials.
Therefore, when choosing sandpaper, the appropriate sandpaper should be selected according to the materials and requirements required to be processed.
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