Performance indicators affecting glass polishing powder

In the field of glass deep processing, polishing powder is the core consumable that determines the quality and efficiency of polishing. Its performance not only affects the surface finish and processing speed, but also directly relates to the equipment adaptability, the frequency of consumable replacement and the overall customer satisfaction with the product.
1. Powder particle size: determines the polishing accuracy and speed, and is often measured by the number of meshes and the average particle size of the powder. The number of meshes of the sieved sieve can grasp the relative particle size value of the powder, and the average particle size determines the overall level of the polishing powder particle size.
The smaller the particle size, the smoother the polishing surface, which is suitable for fine polishing and mirror processing;
The larger the particle size, the stronger the cutting force, which is suitable for rough polishing or large-area glass surface leveling;
The particle size is evenly distributed, which can avoid local scratches and improve the overall surface consistency.
2. Powder Mohs hardness: Powders with relatively high hardness have faster cutting effects, and adding some grinding aids can also improve the cutting effect; different application fields will have great differences, including their own processing technology. The higher the hardness, the stronger the cutting ability per unit time, and the improved processing efficiency; but too high hardness may increase glass stress and cause micro cracks/collapse; the formula needs to be adjusted in combination with the glass material (float glass, quartz glass, coated glass, etc.).
3. Powder suspension: Good powder requires polishing powder to have good suspension. The shape and particle size of the powder have a certain influence on the suspension performance. The suspension of flake-shaped and fine-grained polishing powder is relatively better, but not absolute. The improvement of the suspension performance of polishing powder can also be improved by adding a suspension liquid (agent).
4. Powder crystal form: The crystal form of the powder is agglomerated single crystal particles, which determines the machinability, wear resistance and fluidity of the powder. The single crystal particles agglomerated together by the powder are separated (broken) during the polishing process, causing their machinability and wear resistance to gradually decrease. Irregular hexagonal crystal particles have good machinability, wear resistance and fluidity.
5. Appearance color: It is related to the Pr content in the raw material and the burning temperature. The higher the praseodymium content, the reddish brown the powder appears. Low cerium polishing powder contains a large amount of praseodymium (cerium praseodymium material), which makes it appear reddish brown. For high cerium polishing powder, the higher the burning temperature, the whiter the color appears, and the lower the temperature (about 900 degrees), the lighter yellow it appears.