Dear all,

Our firm has decided to do SAW weld inconel 625 overlay  using ERnicrmo3 filler wire on 110 mm carbon steel sa 516 gr 60 double vee joint with root smaw 7018-1 rest  fill up passes SAW EH10K, but when we started welding overlay  with current 550 amps and 34 v with preheat max 100 C we are observing cracks in between weld beads.
Please suggest what is the best to rectify ..