Except for Reactive metals, others are optional, while qualifying PQR, u have to keep it in about referring codes requirements. As general engineering practice, if Cr is more than 3%, it is always better to have back purging to avoid oxidation.
THANKS & BEST REGARDS,
KG.PANDITHAN, BE, IWE, CSWIP 3.1,
ISO 9712 Level 2 in VT,
ASNT-Level II in PT,MT,RT & UT,
LA ISO 9001-2015,
International Welding Engineer.
CONSULTANT-WELDING & QUALITY
Mobile no: +919940739349
On Mon, May 22, 2023 at 8:40 AM Anand Elankumaran <email2uranand@gmail.com> wrote:
Dear experts,--Could you please check and advise the below query.
- Whether the back purging is a quality requirement or the ASME code is insisting on back purging on SS material while doing the GTAW process.
- Whether we can qualify SS -GTAW PQR without back purging or the ASME code does not allow doing PQR for austenitic steels without a back purge?
- Kindly advise how to do it without purging in SS GTAW Welding . Planning for PQR as well
--Thanks and Regards,E. Anand,Lead QA-QC,Sohar,Oman.
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CANOYChxEbF6gP%2BwCFusuTWnJpmbZMst%2BM1qCz3y2fHr0mRaY1Q%40mail.gmail.com.
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
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.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAJzm4eM3K%3D8eyqKEsbPDOL6h7rGDa%3D2rLG12_Pz7%2BJOj6pCXLw%40mail.gmail.com.
No comments:
Post a Comment