The answers you have received are correct but somewhat incomplete.
If you are going to combine PQR’s to make a single WPS, the essential variables for each process must be met – see QW-200.4. Qualified base metal thickness is an essential variable and is determined from QW-451.1 and PQR base metal thickness. From QW-451.1, for your example, each process is limited to base metal thickness range of 1.5mm to 2T. Thus, your GTAW process is limited to a maximum base metal thickness of 2*(5.54mm) or 11.08mm while the SMAW process is qualified for welding base metal thickness up to 14.22mm. The base metal thickness range for the GTAW process is the limiting condition. If a combined WPS is written from these two PQRs, your qualified base metal thickness range is: 1.5mm < T < 11mm. You cannot use the great qualified thickness range for SMAW since GTAW is not qualified to weld any base metal thickness greater than 11mm.
I hope this makes the issue more clear.
John A. Henning
Welding & Materials
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of veera raghava kommisetti
Sent: Thursday, February 13, 2014 6:06 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:20090] Combination PQR to one WPS
No
On Thu, Feb 13, 2014 at 10:46 AM, Original Man <aumpiem@gmail.com> wrote:
Back ground: One Welding procedure was qualified with GTAW process with base material thickness 5.54 mm with material API 5L Gr.B And Another was qualified with SMAW process with base material thickness 7.11 mm
Question: May this both PQR support a WPS with GTAW + SMAW process for the base material thickness from 14 mm for the same material and same variables ?
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
______________________________________________________________________
The information in this email is confidential, and is intended solely for the addressee(s). If you are not the intended recipient of this email please let us know by reply and then delete it from your system; you should not copy this message or disclose its contents to anyone. The internet can not guarantee the integrity of this message. HAMON (and its subsidiaries) shall (will) not therefore be liable for the message if modified.
______________________________________________________________________
No comments:
Post a Comment