in daily use , how to choose the sandpaper? we mainly choose it from following points.
1. Look at granularity
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. Look at the 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. Look at the use
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.
what is The useing skills of sandpaper ?
When using sandpaper, the surface should be kept wet to give full play to the grinding effect of sandpaper. A consistent direction should be maintained when sanding to avoid scratches. For large area sanding, you can use a belt sander or an electric sander to increase efficiency.
how to main tain Sandpaper ?
In order to extend the service life of the sandpaper, it can be cleaned and dried after use to avoid direct sunlight and high temperature environments. When the sandpaper is seriously worn or loses the grinding effect, the new sandpaper should be replaced in time.
how to use the sandpaper safely ?
When using sandpaper, pay attention to safety, wear protective gloves and glasses, and avoid contact with skin and inhalation of dust. At the same time, it is also necessary to choose products that meet environmental protection standards to reduce pollution to the environment.
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