There are many kinds of aluminum alloy welding, someone asked aluminum alloy welding can use aluminum wire? How to weld it? Today we talk about aluminum alloy welding problems.

       Aluminum alloy can of course use aluminum welding wire, almost all kinds of welding methods can be used to weld aluminum and aluminum alloy, but aluminum and aluminum alloy to various welding methods of adaptability, various welding methods have their own applications. Gas welding and electrode arc welding method, simple equipment, easy to operate. Gas welding can be used for repair welding of aluminum sheet and casting with low welding quality requirements. Electrode arc welding can be used for repair welding of aluminum alloy castings. Inert gas welding (TIG or MIG) is the most widely used welding method for aluminum and aluminum alloys. Aluminum and aluminum alloy sheet can be tungsten ac argon arc welding or tungsten pulse argon arc welding. The thick aluminum and aluminum alloy plate can be used in the tungsten he arc welding, argon-he mixed tungsten gas welding, fusion gas welding, pulse fusion gas welding. Gmaw and PULSE GMAW are used more and more widely (argon or argon/helium mixture).

      Aluminum alloy welding can choose four ways: DC argon arc welding, DC argon arc welding, AC argon arc welding, digital gas welding machine.

     Among them, DC argon arc welding is only used for 1~2 thick plate, small current welding, if the current increases, tungsten needle burning loss quickly, the weld will clip tungsten brittle.

     Dc argon arc welding welding, must first use grinding or pickling to remove the oxide film of aluminum alloy, acid washing liquid is available on the market, suitable for aluminum profiles with thick oxide film, can use high current.

Ac argon arc welding, should choose special AC argon arc welding machine, preferably with pulse, suitable for the oxide film is not too thick aluminum plate, recommended to use lanthanum tungsten tungsten needle. It is characterized by wide application range and simple operation.

    It is more efficient to weld aluminum plate by gas shielded welding, but it must use digital gas shielded welding machine, use argon as shielding gas, use teflon wire feeding tube, chromium zirconium copper conductive mouth, the efficiency is more than 6 times of ordinary argon arc welding.

    As for the selection of welding wire, in principle, the welding wire is close to the material of the aluminum plate. You can buy a section of argon arc welding wire, or cut a section from the plate mounted gas welding aluminum wire. If the material is special and there is no suitable aluminum wire, it is also possible to cut a long strip of aluminum directly from the aluminum plate.