QW-409.26 For the first layer only, an increase in heat
input of more than 10% or an increase in volume of weld
metal deposited per unit length of weld of more than 10%
over that qualified.
Also in SMAW or GTAW welding variables table for WPS, there is no reference to QW-409.26.
I have one more question. During production welding, heat input reading as stated in WPS will be maximum acceptable limit or as stated in PQR.
Ahmed Husain
Mob-0547170325
From: G Padmanabhan <gpadmana@gmail.com>
To: materials-welding@googlegroups.com
Sent: Thu, November 11, 2010 1:24:55 PM
Subject: Re: [MW:8209] heat input
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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 regardsAhmed H.
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--
With Warm regards,
G.Padmanabhan
+96895685853
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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