How to weld aluminum by several welding methods?

1, gas welding and covered electrode arc welding have simple equipment and convenient operation.

Gas welding can be used for repair welding of aluminum plates and castings with low requirements on welding quality.

2. covered electrode arc welding can be used for repairing aluminum alloy castings.

3. Inert gas shielded welding (TIG or MIG) is the most widely used welding method for aluminum and aluminum alloys.

4. Alternating TIG welding or pulsed TIG welding can be used for aluminum and aluminum alloy sheets.

5. Thick aluminum and aluminum alloy plates can be welded by tungsten-helium arc welding, argon-helium mixed tungsten-gas shielded welding, metal-gas shielded welding and pulsed metal-gas shielded welding.

Almost all kinds of welding methods can be used to weld aluminum and aluminum alloys, but aluminum and aluminum alloys have different adaptability to various welding methods, and each welding method has its own application occasions.

protection measures

1. Before welding, remove the oxide on the groove and surrounding parts of the workpiece and the surface of the welding wire by mechanical or chemical methods;

2. Qualified shielding gas should be used for protection during welding;

3. Flux is used in gas welding, and the oxide film on the surface of molten pool is constantly broken by welding wire during welding.

References:

? Baidu encyclopedia-aluminium alloy welding