Does the dual purpose welder not use gas directly with welding wire?
Unable.In addition to oxygen (oxygen acetylene propane) flame using flame protection welding pool, welding wire filling without gas protection,Dual purpose welding machine (tungsten arc welding / welding rod hand arc welding, two shielded welding / electrode hand arc welding) welding wire must use corresponding protective gas to weld.
Welding machine can be done without gas directly welding wire, but can not weld ah.
Dual purpose welding machine, no gas protection, welding wire can not be used.The use of welding wire welding machine has two kinds: namely CO2 welding electrode manual arc welding and TIG welding electrode arc welding.No matter what kind of welding machine, welding arc welding is welding clamp (welding cored electrode coated with coating) welding, welding wire can not be used.CO2 welding, read as: two, welding, carbon dioxide gas arc welding is referred to as. Carbon dioxide gas must be used as the welding protection gas, the welding wire and the weld pool are not penetrated by the air, so as to avoid the defects such as oxygen hole, nitrogen blowhole and crack in the welding seam.TIG welding, read as argon tungsten arc welding. Divided into manual tungsten argon arc welding, automatic tungsten argon arc welding two kinds. For welding of oxygen sensitive non-ferrous metals (copper and copper alloy, titanium and titanium alloy, and the metal alloy; low carbon steel, low alloy steel, alloy steel, welding of thin workpiece, pressure vessel of high quality backing welding etc.. AC tungsten argon arc welding can also weld aluminum and aluminum alloys, magnesium and magnesium alloys. Because argon does not participate in the chemical metallurgical reaction of liquid metal, welding must be argon protected before welding.
