Consumables not tested in the PWHT condition
Consumables not tested in the PWHT condition
(OP)
When qualifying a WPS to ASME IX, for example using E7018-1 on P1 and giving the weld a PWHT for a cold service application. My understanding is that the classification E7018-1 will then be qualified to do this weld as per WPS with a PWHT. My problem is when purchasing new consumables to ASME II C (AWS 5.1-91), consumables is tested in the as welded condition by the manufacturer. We know that there will be a loss of mechanical properties during PWHT, thus consumables close to the minimum values might dip below during PWHT. What need to be done to prevent this? Extreme measures like asking the manufacture to test the electrodes in the PWHT’ed condition for both the minimum and maximum times and temperatures possible, for every lot produced, have been proposed. Is this necessary? How does the codes allow for this possibility?
Thank you
Joe
Thank you
Joe





RE: Consumables not tested in the PWHT condition
The manufacturer of welding consumablesd can provide data after PWHT for the maximum T and t, where the t includes multiple cycle considerations for repair consideration after PWHT.
Thanks and regards
Sayee Prasad R
Ph: 0097143968906
Mob: 00971507682668
email: sayee_prasad@yahoo.com
If it moves, train it...if it doesn't move, calibrate it...if it isn't written down, it never happened!
RE: Consumables not tested in the PWHT condition