Pulse welder question

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I have been a stick welder all my life. Now I am working part time at a shop that has mig welders. We have a pulse welder and I really have a hard time with it. Seems like everything gets so hot that there would be crystalization. Just wondering what the pulse purpose was. Thanks Harold
Reply:Pulsed MIG allows you to have a low spatter, high penetration, high deposition rate, spray transfer at lower current and voltage than non-pulsed MIG.  If the short arc process is too cold with too much spatter, and the spray arc process is too hot and fluid, then the pulsed process fits in the middle somewhere.  Where convention spray is too hot and fluid for out-of-position welds, the pulsed process may be tuned to low enough heat to allow it.Not sure what you mean by "so hot" and "crystalization".  Sounds like too much heat for the given thickness, maybe to slow on the travel speed, and also maybe poor inert gas shielding, all which could cause ugly oxidation of the weld.Last edited by pulser; 01-07-2009 at 04:14 PM.
Reply:I'll PM you a parameter chart for GMAW-P (can't show it here because of copyright laws)-Matt------------------------------------------
Reply:Thank you Pulser. I have welded with mig before but when I went to work here my boss always wants the mig done as hot as the welder can put out. The pulse welder is a 350 miller and he runs it wide open on flat and it almost hurts. Ha. We do a lot of half and one inch stuff. I was always under the influence that when you run a bead it should be slightly convex and shouldnt have heat distortion . I also believe metal can only stand so much heat and shouldnt be welded at to fast a speed . Thank you.