The polishing of alumina ceramic parts involves several factors, including roughing, choosing the right liquid abrasive, using polishing machinery, controlling the polishing speed, determining the polishing time, and maintaining the stability of the part. Here are the steps:
1.Roughing: Before polishing, the alumina ceramics need to be roughened, i.e., cut with sandpaper or a grinding wheel to remove burrs and rough surfaces. 2.Choose liquid abrasives: Commonly used liquid abrasives for alumina ceramic polishing are alumina, silica sand, zirconia, etc. When working with liquid abrasives, you need to choose the right particle size and low to high abrasive grades to achieve the right polish.
3.Use polishing machinery: Polishing machines can be manual or electric, usually with rotating disc or axle type. Wheel and axle polishing equipment can provide higher polishing pressure and more power.
4.Control the polishing speed: The polishing speed should be less than 3000 rpm. If the speed is too fast, the abrasive will not stay on the surface long enough to achieve the desired polishing result.
5.Decide the polishing time: The polishing time can be decided according to the quality and processing requirements of the alumina ceramic. In practice, a small number of experiments should be performed to determine the appropriate polishing time.
6.Maintain part stability: During the polishing process, the alumina ceramic needs to be stabilized to avoid surface cracking or cracking due to excessive heating and cooling. In addition, it can be ground and polished by laser processing and ultrasonic processing, or grinding and polishing with Al2O3 powder or diamond paste. For products with high surface smoothness requirements, glazing may be required. It can also be ground with diamond, silicon carbide, etc., which are harder than alumina, from coarse to fine. Ion implantation is also a way to process the surface of materials, and ion implantation ceramics are a supplement to the existing toughening mechanism and a deep processing of prepared ceramic products.
Alumina ceramics have high hardness, brittleness of the material, and it is easy to chipping and chipping during processing. Generally, the processed ceramic parts are processed by a special ceramic engraving machine, which can effectively reduce the cost and achieve high-precision machining. Xin Tenghui CNC has developed a ceramic engraving and milling machine for ceramic processing, with good protection performance and high processing accuracy. The ceramic engraving and milling machine strengthens the rigidity of the machine tool, and the vibration generated during processing can be reduced to a minimum, ensuring the accuracy while also improving the processing efficiency, and the protective performance is strengthened for the ceramic powder, which can completely eliminate the damage of the powder to the machine tool. Xin Tenghui CNC can also provide ceramic processing technology, with a skilled CNC machining, grinding team, precision parts research and development custom processing, etc.
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