Which welding technique is best for aluminium？

In the case of aluminum, stick welding methods don’t serve that well as they create a lot of slag and splatter which is labor intensive to clean up. That’s why you should prefer gas tungsten arc welding also known as tungsten inert gas welding or TIG welding, which employs gas to safeguard your weld rather than flux. It is among the most widely utilized welding methods for aluminum.

TIG welding involves using a steady alternating current (AC) setup and 100 percent argon as a shielding gas. Since no mechanical wire feeding is required in the process, you will reduce your material feed issues. 

Instead, the filler material gets fed into a puddle by the welder. Because the AC removes the oxidized coating from the aluminum as it welds, this technique is also exceedingly clean. Additionally, it guards against contamination of the aluminum throughout the procedure.

The classification of TIG welding

Argon tungsten arc welding is divided into manual welding, semi-automatic welding and automatic welding. Manual argon tungsten arc welding, the movement of the welding gun and adding filler wire completely rely on manual operation; In semi-automatic argon tungsten arc welding, the welding gun is operated manually, but the filling wire is automatically fed by the wire feeding mechanism. When the workpiece is in fixed arc motion, the welding gun is installed on the welding trolley, and the walking and filling wire of the trolley can be added by cold wire or hot wire. Hot wire means to improve the melting speed. Filler wire is sometimes not necessary in some situations, such as sheet welding or bottom weld. Among the above three welding methods, manual argG welding is the most widely used, while semi-automatic ARGG welding is rarely used.