Dear Riaz,
Advantage is to reduce the no of WPS. A single PQR (Combined process) can be used to prepare three different WPS or even more within the range qualified for weld deposit and base metals thickness.
Further, in WPS, we also mentioned the range qualified for individual processes.
This is best of my knowledge. if I am wrong, correct me,
Regards,
Ajay Kadyan
Engineers India Limited.
On Thu, Aug 6, 2015 at 2:09 PM, Ri@z <riaz.rafeeque@gmail.com> wrote:
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Thank You For replyMy humble doubt is, 1 ) weld metal deposition is restricted to be max 6 mm for gtaw, and 13 mm for SMAW, what is the advantage of having 19 mm as Qualified base metal thickness. For separate process there is no advantage of Base metal Qualified as per QW-451 ie 1.5 to 2TAM I RIGHT ???
On Thursday, 6 August 2015 14:02:14 UTC+5:30, George Dilintas wrote:Backing is a welders qualification essential variable. For PQR it is a nonessential one.The Base metal qualification range is the same for the 3 casesSent from my BlackBerry 10 smartphone.
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But for SMAW single process you have to give Metal baking as the GTAW weld Metal act as metal baking. Sent from Yahoo Mail on Android
Date:Thu, 6 Aug, 2015 at 11:58 am
Subject:[MW:23271] Multiple WPS from single PQR--Dear Sir,,I have one PQR with 3 mm GTAW weld deposit and 6.5 mm SMAW deposit. Base metal thickness is 9.5 mm and impact is not required.Please correct me if any of the following is NOT correct as per Sec IX1) Combined Process (GTAW + SMAW) up to a thickness of 1.5 to 19 MM (2T)2( Single process wps of SMAW with weld metal thicjness 13 MM and qualified base metal thickness is 1.5 mm to 13 mm3) Single process WPS of GTAW with weld metal thickness of 6 MM and Qualified base metal thickness is 1.5 to 6 mmPlease help!!Riaz
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