Cold Metal Transfer Cmt Welding. 3a shows the size and spacing between grains formed at the top surfaces of th e cmt welded region. This reduction in heat is cmts greatest benefit and is why its called cold metal transfer.
The cold welding process for premium quality extremely low heat input and an exceptionally stable arc set cmt apart from conventional migmag welding. The results indicated that the current and voltage waveforms of cmt welding ti 6al 4v alloy are different from that of typical cmt cycle. The filler wire is constantly retracted at very short intervals.
Nelson edoh imoudu.
The cmt process is based on controlled pulsed welding current and voltage and is basically a derivate of the well known migmag process. A hot cold process makes the impossible possible general remarks some like it cold there are some materials and applications where having only a low thermal input is extremely beneficial. Thats a big deal in welding because as youll know if youve read our earlier tiki talk posts heat causes distortion. The filler wire is constantly retracted at very short intervals.