Wednesday, July 28, 2010

Re: [MW:6177] PWHT above Tempering Temperature

In any case you have to stay below the lower transformation temperature


----- Original Message -----
From: limesh M [limesh78@gmail.com]
Sent: 28/07/2010 06:59 MST
To: "Materials & Welding" <materials-welding@googlegroups.com>
Subject: [MW:6170] PWHT above Tempering Temperature

Dear All,

Is there any clause in ASME BPV which ban performing PWHT above
material's tempering temperature?


Apart from ASME BPV, any other code restrict PWHT above tempering
temperature?


What would happen if we do PWHT above material's tempering
temperature?


What would be the maximum acceptable close range variations(For
example-50 to 100 Degree Celcius above tempering temp.) above
tempering temperature during PWHT?


Thanks and Regards,


Limesh

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