Welding.

In pulsed welding, the power source has two different levels of current. There is a constant base current, which maintains the welding arc, surmounted by a (pulsating) pulse current, which causes the drops of filler material to come off. With Double Pulse, the welding wire is also supplied in a pulsating manner. This has the advantages that less heat is introduced (minimal deformation of the base material), there is optimal burn-in (good quality weld), it becomes easier to weld thin material or in position (for example, vertically rising) and spatter formation is prevented ( no post-processing required). Pulsed welding is especially necessary when welding aluminum.