What's the difference between argon arc welding and double-sided shielded welding?

The differences between argon arc welding and double-sided shielded welding are as follows:

1. Use different electrodes. Argon arc welding uses tungsten electrode, and secondary welding uses fine wire with automatic wire feeding as electrode.

2. Protective gases are different. Argon gas is used as shielding gas in argon arc welding, and carbon dioxide is used as shielding gas in the second welding.

3. The weldable objects are different. Argon arc welding can successfully weld some non-ferrous metals with strong chemical activity, such as aluminum, magnesium and alloys, which is not available in two-way welding.

Extended data

First of all, argon arc welding has the following advantages:

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, not limited by the position of weldment, all-position welding can be carried out.

Second, the welding material

1, CO2 gas purity requirement is 99.5%; The water content shall not exceed 0.65438 0%; The carbon content shall not exceed 0. 1%.

2. Rust spots are not allowed on the surface of copper-plated welding wire.

Carbon dioxide gas shielded welding process is suitable for welding various large steel structures of low carbon steel and low alloy high strength steel. High welding productivity, good crack resistance, small welding deformation and wide deformation range, which can be used to weld thin and medium plates.

References:

Baidu encyclopedia-argon arc welding

Baidu Encyclopedia-Erbaohan