The effect of polished alumina on car paint and metal cutting and polishing
The main component of alumina polishing powder is α-Al2O3(alpha phase), and it also contains auxiliary components such as dispersant, suspending agent, lubricant, emulsifier, etc. It is widely used in machine preparation, optical processing, jewelry processing, automobile repair and maintenance and other fields. The requirement for the strength of the original crystal is relatively high, so the calcination temperature for preparing alumina polishing powder should be high, generally above 1600 degrees, so as to ensure that the product has good hardness.
The size of the original crystal determines the thickness of the surface texture of the polished product, which is not easy to clear. The round or oval shape of the original crystal is easy to throw out black and bright light, the rhomboid crystal is easy to throw out yellow and white light, and the flake or flocculent crystal is poor in grinding power and difficult to emit light.
Different polishing processes are determined according to the average particle size. Generally, the particle size of 20-45μm is used in the rough polishing process, and the particle size of 4-20μm is used in the middle polishing process. The particle size of 1-4μm is used in the fine polishing process. mirror reflection. The narrower the particle size distribution, the higher the polishing efficiency.
The main factors that determine the quality of alumina polishing powder are the particle size distribution and particle gleam morphology;
The particle size of the particles determines the polishing accuracy of the polishing powder, and the average particle size of the particles determines the polishing rate of the polishing powder. ；
The particle morphology of the alumina powder affects the roughness and polishing defects of the polished surface. The smooth particles are not easy to produce scratches, and the surface finish is high after polishing; the angular particles are easy to produce scratches.
