PWHT Heating and Cooling Rate
PWHT Heating and Cooling Rate
(OP)
Where can I find in ASME Section I the requirements for the heating and cooling rate during post weld heat treatment of material(ie: Carbon steel)?
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PWHT Heating and Cooling Rate
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RE: PWHT Heating and Cooling Rate
"The weldment shall be heated slowly to the temperature specified in Table PW-39 and held for the specified time, and shall be allowed to cool slowly in a still atmosphere to a temperature not exceeding 800°F (425°C)."
I would recommend following the B31.1 limits, which is:
"Above 600°F (315°C), the rate of heating and cooling shall not exceed 600°F (335°C) per hr divided by 1/2 the maximum thickness of material in inches at the weld but in no case shall the rate exceed 600°F (335°C) per hr."
RE: PWHT Heating and Cooling Rate
RE: PWHT Heating and Cooling Rate