1. Polishing disc material.

Different workpieces require different grinding discs or polishing discs. This time, we need to emphasize this point again. The material of the disc to be used needs to be determined according to the specific material of the workpiece. For example: sapphire products can use copper discs, metals can use diamond or stainless steel discs, etc.

2. The particle size of the polishing disc should be relatively fine.

Polishing is a delicate process, requiring the disc to be delicate and not too rough. Only a delicate disc can polish the surface of the workpiece layer by layer and evenly make it into a mirror effect. Rough discs not only produce uneven effects, but also easily produce scratches and spots on the surface.

3. The polishing disc must have a certain hardness.

Since the workpiece and the disc will generate a lot of friction and heat during high-speed operation, if the polishing disc does not have a certain hardness, it is easy to produce cracks, scratches, collapsed edges and other phenomena. If the disc has these problems, the quality of the workpiece polishing cannot be guaranteed. Therefore, it is very important to have a suitable hardness of the disc. It is not good to be too hard, because it is easy to damage the workpiece during the friction process. Therefore, when choosing according to the material, we try to choose a disc that is slightly harder than the workpiece material for polishing, so that the effect is better.

4. The material used for the polishing disc must have a certain heat resistance.

Why should it have heat resistance? There is no doubt that friction generates heat, which is a physical principle that everyone knows. If the disc is not heat-resistant, then after a certain period of grinding, the temperature of the disc reaches a certain value and it will automatically break, or destroy the workpiece. Although we have a cooling device on the plane polishing machine, materials with good heat resistance are more suitable for polishing discs.