Glove box protective argon arc welding method

The invention discloses a glove box protective argon arc welding method. In the method, the oxygen concentration in a transition cabin and a glove box of the glove box protective argon arc welding equipment is lowered to minimum through the method of rapid vacuum pumping, aerating, rapid vacuum pumping and secondary aerating by the glove box protective argon arc welding equipment, and the factors, such as protective gas, protective gas flow, welding current, arc length and welding speed and the like in the welding process are screened to determine best welding process. Experimental results indicate that the glove box protective argon arc welding method provided by the invention can further improve anti-oxidation effect, has high welding efficiency and good-quality welded products, and canbe used on high-power products; if the method is used for high-power travelling wave tubes, the quality of the travelling wave tubes is improved, the service life is prolonged and the economic benefit is better.