How are alumina ceramic products made

The manufacturing method of alumina ceramic products uses a-alumina (a-Al2o3) as the base material and magnesium oxide, cobalt oxide, chromium trioxide, etc. as auxiliary materials, and undergoes raw material processing, compaction molding, sintering, and polishing processes. The characteristic is that the polishing process contains a high-temperature chemical polishing and coloring process, and the process includes two steps:

In an oxidizing atmosphere and high temperature, drop an aqueous solution of a mixture of ferric chloride and chromic acid on the sintered alumina ceramic.

In an oxidizing atmosphere and high temperature, drop an aqueous solution of borax on the previously treated alumina ceramic. Compared with the prior art, the process is simple, the product appearance is beautiful and smooth, the color is uniform and bright, various chemical and physical properties are excellent, the quality is stable, and the finished product qualification rate is high. It is suitable for the production of wire loops in the fishing gear industry and thread guides in the textile industry.