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Kinda a dumb question....I've been welding outside on steel thats probably 20-30 degrees and I can never get the first few passes to run right, The welds look good as far as being flat and uniform ripples with no undercut, but they tend to be narrow and the slag refuses to come off without serious pounding and chipping. after about 3-4 passes the welds widen up and the slag starts popping right off. obviously I'm running too cold on the first few passes right? So I guess my question is, should I be jacking up the amps alot for the first few passes then back down after everything is hot or preheat my metal? and once I'm running good do I want to keep adjusting amps, or adjusting the tempature of my steel? 3/8" plate doing doing T-joints, using 1/8" 6013 rods... amps about 120I like to party!
Reply:preheat to 70 degrees F.
Reply:Agree with preheat, it will help your issue and drive off moisture, and slow down cooling rate.
Reply:Just hit your piece with a rosebud until the water evaporates off the piece, then run your bead. |
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发表于 2021-9-1 00:01:55