Vent: Watching guys skip the pre-heat on a 2-inch thick plate weld drives me nuts

I keep seeing it at the yard, especially on the big pressure vessel jobs. They think because it's a nice day or they're in a hurry, they can just start laying beads. That's how you get cold cracks and a call-back in six months when it fails hydro. My old foreman at the Gary Works would dock your pay for that, and he was right. What's the thickest plate you've ever had to pre-heat before a root pass?

2 comments

2 Comments

jade6397d agoMost Upvoted

Gary Works had a rule for anything over an inch and a quarter. What's the highest interpass temperature you've had to hold on a really thick joint, like on a heavy wall nozzle?

casey9437d ago

Was that a hard limit or did they let you creep up if you kept the heat input low?