Can TIG series argon arc welding machine weld aluminum and can weld more thick aluminum?
AC and DC argon arc welding machine can weld aluminum, DC argon arc welding machine can not weld aluminum, welding more thick aluminum, depending on the argon arc welding machine output current size, that is, the size of the welding machine model
Of course, welding aluminum, AC power is generally used, of course, if the welding amount is small, but also can use DC reverse method, the effect will be better, but tungsten is easy to burn, easy to spend. The direct current connection method is generally used in automatic TIG welding of aluminum. How thick can welding theory, in theory, manual welding using open gap multi-layer welding, can be welded about 12 millimeters maximum, single-layer welding about 4 mm.
TIG series DC TIG welding of aluminum can be divided into two kinds, split type welding torch can be converted is then can reverse welding welding of aluminum, one cannot convert and the welding torch can not welding of aluminum.Because the aluminum strong affinity for oxygen, the welding process of liquid aluminum can easily be oxidized to form alumina film on the surface of the molten pool, the melting point of aluminum is only 660 DEG C, and the melting point of aluminum oxide film at more than 2000 degrees Celsius, alumina higher melting hindered the mobility of liquid aluminum, must try to break the alumina film can be welded. AC output of AC welding machine has good "cathode breaking" function, so AC arc welding is suitable for welding aluminum.Tungsten argon arc welding with DCRP (welding torch is connected with the anode wire clamp is connected with the negative pole +, -), also has a "broken cathode" function. But the disadvantage is that the tungsten burning too fast to frequent grinding of tungsten electrode, welding arc stability is far better than AC TIG welding effect, in the absence of AC TIG welding machine under the condition of using DCRP welding aluminum as AC TIG welder substitute.
