What is argon arc welding and what are the characteristics of welding methods?

Argon arc welding is a welding technology developed on the basis of ordinary arc welding principle. Argon gas is used to protect metal welding materials, and the welding materials are melted into liquid state on the welded substrate by large current to form a molten pool, so that the welded metal and welding materials can achieve metallurgical bonding.

The characteristics of argon arc welding are as follows:

1, argon protection can isolate the adverse effects of oxygen, nitrogen and hydrogen in the air on the arc and molten pool, reduce the burning loss of alloy elements, and obtain dense, splash-free and high-quality welded joints;

2. Argon arc welding has the advantages of stable arc combustion, concentrated heat, high arc column temperature, high welding production efficiency, narrow heat affected zone, and low stress, deformation and crack tendency of welded parts;

3, argon arc welding is open arc welding, which is convenient for operation and observation;

4, the electrode loss is small, the arc length is easy to maintain, there is no flux and coating during welding, and it is easy to realize mechanization and automation;

5. Argon arc welding can weld almost all metals, especially some refractory metals and oxidizable metals, such as magnesium, titanium, molybdenum, zirconium, aluminum and their alloys;

6. All-position welding can be carried out, which is not limited by the position of weldment.