Hot pass technique most apprentices get completely backward

I keep seeing new guys trying to run their root pass too cold and then wonder why they get slag entrapment. Did a job last week at a refinery in Baton Rouge where a 2nd year had to grind out 3 feet of his root because he was running 90 amps on 1/8 rod. For 3/8 plate you need at least 130 amps minimum, no exceptions. The foreman told him "that rod ain't a candle" and I about lost it laughing. How are you guys teaching the new hands to set their heat on open root?

2 comments

2 Comments

susan4248d ago

You ever see what happens when they run it too hot and start washing out the keyhole instead?

rowan5938d ago

Yeah, you totally lose the clean cut and end up with a messy oval that just keeps getting bigger, right? Seen a few guys wreck a good lock that way, @susan424.