1. Material of polishing disc.
Different workpieces require different grinding discs or polishing discs. The material of the disc needs to be determined according to the specific material of the workpiece. For example: sapphire products can be used with copper discs, metal diamonds or stainless steel discs.
2. The grain size of the polishing disc should be relatively fine.
Polishing is a delicate process. The disc used must be fine and not too rough. Only a delicate disc can polish the surface layers of the workpiece and make it evenly into a mirror effect. Rough disks not only make the effect uneven, but also prone to scratches and spots on the surface.
3. The polishing disc must have a certain degree of hardness.
Since the workpiece and the disc will generate greater friction and heat during high-speed operation, if the polishing disc does not have a certain degree of hardness
Degree, it is easy to produce cracks, scratches, collapse and other phenomena. If these problems occur in the disc, the quality of the polishing of the workpiece cannot be guaranteed. Therefore, the proper hardness of the disk is very important. It’s too hard,
Because it is too hard, 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 material of the workpiece for polishing, so that the effect is best.
4. The material used for the polishing disc must have a certain degree of heat resistance.
Why is it necessary to have heat resistance? There is no doubt that friction heat is a well-known physical principle. If the disc is not heat resistant, then after a certain period of grinding, the disc will automatically break when the temperature reaches a certain value. Or destroy the workpiece. Although we have a cooling device on the flat polishing machine, materials with good heat resistance are more suitable for polishing discs.