(1)Preparation before welding, we can use chemical or mechanical methods, clean up oxide film on the both side of the surface of the welding groove. Chemical cleaning use alkali or acid to clean the surface of the workpiece. The method not only can remove the oxide film, but also remove oil, after washing the appearance of aluminum alloy for the dull silvery white.
(2)determine the installation gap and position welding distance, suitable positioning distance can ensure the required positioning welding gap, therefore, choose the appropriate installation gap and positioning welding distance can reduce the deformation of a useful way.
(3)Select the welding equipment, there are more varieties of welding products on the market, normal circumstances should choose to communicate
TIG welding.
(5)Select the welding method, usually left welding method is selected,
welding torch and the workpiece into a 60 ° angle. Welding thickness is 15mm or more.
