P1 to P8 carbon side cracking
P1 to P8 carbon side cracking
(OP)
Hello,
We have been attempting to perform a WPQ for P1 to P8 using ER 309 (GTAW)process. Twice now we have experienced cracking on the carbon steel side of the face bends.
Is this an issue with pre-heat? Currently we do not pre-heat and I have seen qualified procedures that do not cite this as necessary.
Filler and cap welded at 155 amps, DCEN.
Thanks all in advance.
InspCool
We have been attempting to perform a WPQ for P1 to P8 using ER 309 (GTAW)process. Twice now we have experienced cracking on the carbon steel side of the face bends.
Is this an issue with pre-heat? Currently we do not pre-heat and I have seen qualified procedures that do not cite this as necessary.
Filler and cap welded at 155 amps, DCEN.
Thanks all in advance.
InspCool





RE: P1 to P8 carbon side cracking
RE: P1 to P8 carbon side cracking
I presume this is a heat problem.
RE: P1 to P8 carbon side cracking
Most expensive thing in the Weld Shop is cheap welding 'talent'. Sorry, but your welder needs more training and experience. Also, check to see if the welder got lazy and did not grind the weld prep area to bright, shiny metal.
RE: P1 to P8 carbon side cracking
Best regards - Al
RE: P1 to P8 carbon side cracking
RE: P1 to P8 carbon side cracking
The material is SA-516-70 to SA-240-304
Welding in the flat position.
InspCool