What are the principles of Tandem twin wire welding and monofilament composite pulsed MIG welding?
Tandem uses double wire and double arc welding. The phase difference between two welding pulse current is 180 degrees. This can effectively avoid interference between two over arcs. The utility model has the advantages that the cooling speed of the molten pool is slow, the metallurgy is sufficient, and the mixing of the molten pool is greatly reduced, and the porosity tendency is reduced.Filament compound pulse. It is called "double pulse". This welding is widely used in aluminum alloy welding.
Tandem double wire welding is to place two welding wires at a certain angle in a specially designed welding torch, and two welding wires are respectively supplied by independent power supply. In addition to feeding speed can be different, other parameters, such as: wire material, diameter, pulse, etc. can be set independently of each other, so as to ensure the arc work in the best state. Compared with other twin wire welding technology, the welding efficiency and welding speed are improved because the arc of two welding wires is burned in the same molten pool and the total welding current is increased. At the same time, because the two welding wires are sent to the same molten pool alternately, the mixing action of the welding pool is reduced, and the sensitivity of the porosity is improved, and the quality of the weld is improved.
LZ, this name is interesting. Double wire welding is two welding machines, both guns at the same time welding, can be the same arc pit, can also be a front, a rear, two arc pit, or both sides simultaneously. Yes, the welding wire is different and the welding parameters are different. Double Pulse GMAW, two pulse superposition, with wave superposition theory as a pulse for welding, one droplet per pulse, a pulse, is responsible for the scale pattern.
