dear ahmed
1-acc.to ASME IX (409.1)decrease in heat input not essential but from the metallurgical view it has a limit due to cooling rate ,micro structure,etc &it is a rule of thump
2-it is project spec., experience, may be welding book as ASM,WELDING HAND BOOK,
2-it is project spec., experience, may be welding book as ASM,WELDING HAND BOOK,
best regards
H.KASHKOUSHA From: Ahmed Husain <ahmraha@yahoo.com>
To: materials-welding@googlegroups.com
Sent: Thu, November 11, 2010 6:53:25 AM
Subject: [MW:8197] heat input
Dear all,
I have come across a WPS for LTCS (with impact test) in which maximum heat input figure is below 800 joules/mm, But the actual heat input figure in supporting PQR is above 800 j/mm. I have two questions.
1. WPS is acceptable or not.
2. Which code/ standard is referred to find out acceptable heat input limit.
Construction code is ASME B31.3; WPS qualification code is ASME SEC IX
With regards Ahmed H.
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