In recent years, the application of new ceramic materials in petroleum, chemical industry, machinery and other fields has been very active. Using the wear resistance and corrosion resistance of ceramics to manufacture wear-resistant and corrosion-resistant parts instead of metal materials has become one of the important development directions of the high-tech information market. With the continuous improvement of Science and technology and industrial and mining demand, it has become a trend for new ceramic gate valves to replace general metal gate valves. However, Many people know little about the protection of ceramic gate valves