PWHT is an essential variable; you have to re-run the PQR.
--- On Tue, 2/6/09, abbey kangale <abhianu12@yahoo.com> wrote:
From: abbey kangale <abhianu12@yahoo.com>
Subject: [MW:2297] Casting WPS/PQR
To: materials-welding@googlegroups.com
Date: Tuesday, 2 June, 2009, 8:55 AM
Dear All I have case for CF8M casting for Valves as per B16.34 which involves welding for internal cage fittment and ... Foudry has done welding and then they carryout subsequent Heat Treatment 1070Deg cel.to satisfy CF8M heat treatment requirement. When we asked for WPS/PQR foundry has submitted WPS/PQR for welding without PWHT and PQR is qualified without Heat Treatment requirement and for which I had taken a objection . Can Group advise my objection rersolution and corrective action as casting are ready for valve asssembly for our project Abhijit |
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