TIG welding method is mainly used for aluminum alloy, which is a good welding method. However, TIG welding equipment is complex and not suitable for open-air operation.

2. Resistance spot welding and seam welding

This welding method can be used to weld aluminum alloy sheets with thickness below 5 mm, but the welding equipment is complicated, the welding current is large and the productivity is high, which is especially suitable for mass production of parts.

3, pulsed argon arc welding

Pulsed argon arc welding can improve the stability of welding process and adjust parameters to control arc power and weld formation. The weldment has small deformation and heat affected zone, which is especially suitable for thin plate, all-position welding and welding of forged aluminum, hard aluminum and superhard aluminum with strong thermal sensitivity.

4. Friction stir welding

Friction stir welding is mainly used in the field of light metal structures such as aluminum alloy and magnesium alloy. The biggest feature of this method is that the welding temperature is lower than the melting point of the material, which can avoid cracks, pores and other defects caused by fusion welding.

Aluminum and aluminum alloys play an important role in all kinds of materials used in modern engineering technology, and their annual output is second only to steel, ranking second in the world and first among non-ferrous metals. If aluminum alloy first appeared in the aviation industry, in recent decades, in addition to the aviation industry, aluminum and aluminum alloys have been widely used in aerospace, automobiles, ships, bridges, machinery manufacturing, electricians, chemicals and low-temperature devices to manufacture various components, oil tanks, corrosion-resistant containers and wires. At present, the most widely used aluminum alloy welding structures are rust-proof aluminum alloys, namely aluminum-magnesium alloy and aluminum-manganese alloy.