the section being welded is mistakenly over-heated,,,,,,,well beyond 1200 degree's.........now what.....?
Chop 'n' crop, methinks. If you controlled the cooldown, depending on what material you're dealing with, it may not be catastrophic, but i would replace it.
More info needed.... code, material, plate or sections, etc.?
It depends on the base material, how far over 1200 you are talking about, and what code applies. If this is carbon steel, the lower critical temperature is around 1335 F and you may be OK. You may need to do some hardness testing to see how much softening occurred.
What kind of steel, and was there any deliberate cooling or just natural in air?
Hg
Gentlemen,
first thing Joe should have cleared up is the scale the 1200 degrees were measured to: Farenheit? Celsius? That makes a heck of a big difference.
In engineering nothing should be taken for granted if it's not duly cleared up.
Giovanni S. Crisi
Sao Paulo - Brazil
Keep us straight Giovanni! He only said it was heated over 1200 degrees and I assumed that it was both Farenheit and he was discussing postweld heat treatment. It has to be heated well over 1200 F just to weld it! More detail is needed.
the section is ASTM 572 gr 60.......its been heated up between 1500 - 1600 F............
What happened? Did someone do the wrong thing with a preheat torch? Or was interpass temperature not monitored? What area of the steel are we talking about? As someone else pointed out, the weld itself will be above the melting point of steel.
Hg
no , my buddy was bull-shitting with the female job super (of all people) and didn't snap out of it untill it was too late.........
they replaced it...........
Forum
