As a new type of wastewater treatment technology, photocatalysis has attracted the attention of researchers with its remarkable advantages of completely mineralizing organic pollutants. Photocatalyst is also widely used in the building decoration market and indoor vehicles. The photocatalytic process has almost no limitation for the degradation of organic matter, can completely mineralize organic pollutants, no secondary pollution, simple equipment, low investment, good effect, etc.  advantage.

As resistance welding, the electrode is a very critical material, which must withstand ablation during the welding process and avoid welding with the welding material. Therefore, the requirements for the electrode material are also very high. To withstand high temperature ablation, a high melting point is first required. In the metal material, the melting point of tungsten is the highest (up to 3400 °C), and its electrical properties are also very good. Therefore, tungsten is often chosen as the electrode material.

The composite material prepared by the composite powder obtained by uniformly doping the metal-based particles with the nano ceramic powder not only has excellent toughness, thermal conductivity and the like of the metal, but also has high temperature resistance, wear resistance and corrosion resistance of the ceramic, and high hardness and highness. Chemical stability and other characteristics.

There are a large number of processes in industrial production that require water to cool. With the continuous development of social urbanization and industrial production, water resources are becoming more and more tense. In order to save water, the concentration of the industrial circulating water cooling system is continuously increased, reaching more than 4 times.