Hi
QW-402.6 " An increase in the fit‐up gap, beyond that initially qualified."
For EBW,LBW it is Essential variable (QW 260 & QW 264)
For GTAW, QW- 402.6 is not applicable / Not specified at all.
Even for EBW,LBW, in case root gap is qualified with 1 mm, increase more than 1mm is not allowed. So there is No range of qualification.
For GTAW, it's the ability of welder to fuse both roots to make smooth weld. I have seen an welder done with 15mm gap without issues.
Better to strict with PQR root gap to achieve your production weld mechanical requirements / NDE requirements
Thanks and Regards
Rameshkannan Devaraj
"What you have learned is a mere handful; What you haven't learned is the size of the world – Avvaiyar"
On Wed, Jul 11, 2018 at 4:20 PM JAY <jay0000.jp@gmail.com> wrote:
Dear Team,--I have some question in my mind regarding WPS/PQR/WPQ Qualifications. Explain below.1. I have qualified wps with(SAME SEC IX)-Materials : SA 240 GR 316L TO SA 240 GR 316L (P8 G1 TO P8 G1)Process : GTAW.(with back gauge)Thickness: 8 mm to 8 mm.Root gap: 1.6 mmNow my question is about root gap qualification,If i qualify WPS with above parameters having root gap 1.6.The range qualification of thickness is 4 to 16 mm. likewise is there any range for Root gap qualification?YOUR ASSISTANCE IN THIS MATTER WOULD BE GREATLY APPRECIATED.
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.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.
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.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.
Comments