1. For argon arc welding：

Adding various rare earth elements to tungsten or tungsten to make tungsten electrodes is a type of inert gas shielded welding (TIG). Generally, under argon protection, tungsten high-temperature arc is used to melt the workpieces together to achieve welding effect. Compared with other welding methods, the current density is high, the heat is concentrated, the deposition rate is high, the welding speed is fast, the arc and molten pool are visible, the operation is convenient, and it does not participate in welding to ensure the chemical composition of the workpiece. The weld quality is good, and the joint strength can reach 80% to 90% of the base material. In 1930, the United States invented inert gas shielded welding, and in 1957, China began using tungsten argon arc welding. Currently, it is widely used for welding materials such as stainless steel, high-temperature alloys, titanium alloys, aluminum alloys, etc., and is used in industries such as nuclear energy, aerospace, shipbuilding, electronics, metallurgy, etc.

2. Plasma arc cutting：

The cut of plasma arc cutting is narrow, smooth, and straight, with a quality similar to that of precision gas cutting. Under the same conditions, the cutting speed of plasma arc is faster than that of gas cutting, with high cutting speed and efficiency. It is widely used and can cut non-metallic materials such as stainless steel, heat-resistant steel, titanium, molybdenum, tungsten, cast iron, copper, aluminum, and aluminum alloys, as well as ores, cement boards, and ceramics