Radiography of weldings before or after PWHT?
Radiography of weldings before or after PWHT?
(OP)
Hi, i need to know what You think about radiography of weldings. These radiographies must be done after or before PWHT? if i've a perfect radiography before PWHT, could i find some defects after PWHT? Why?
Are there differences between low alloy & Carbon Steel weldings?
Are there differences between low alloy & Carbon Steel weldings?





RE: Radiography of weldings before or after PWHT?
In highly restrained joints in carbon steel, we have seen delayed cracking up to 72 hours after weld completion.
RE: Radiography of weldings before or after PWHT?
thank you for your quick reply. It's clear your answer about low alloy steels.
Regarding C.S. materials please can you explain better your experience? if i do the radiography after (for example) 72 hours, i'll be sure that PWHT won't cause defects in welding (only for c.s.)?
RE: Radiography of weldings before or after PWHT?
RE: Radiography of weldings before or after PWHT?
RE: Radiography of weldings before or after PWHT?
I've always considered it a prudent conservative practice and have never really questioned it.
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