Electrodes for plasma spraying, argon arc welding, and pulse arc welding are usually made of tungsten-doped thorium or rare earth cerium. Tungsten-thorium and tungsten-cerium electrodes not only have a limited service life, but also thorium is a radioactive element. Tungsten-doped thorium is in the manufacturing and use process It is harmful to the human body and the environment. The use of tungsten rhenium electrode can effectively inhibit the growth of crystal grains caused by recrystallization during use of the electrode, improve the electron emission characteristics of the material, reduce the formation of hole defects and burnout of the electrode under the action of arc, and extend the service life of the electrode 2~ 3 times, and environmental protection without any radioactive hazards. UMM uses new tungsten rhenium electrodes to replace tungsten thorium and tungsten cerium electrodes, which greatly improves economy and efficiency.