Hegde P.B.
--- On Fri, 1/2/13, Tarık Tuna <tariktuna@gmail.com> wrote:
From: Tarık Tuna <tariktuna@gmail.com>
Subject: [MW:16656] Required PQR Test Help
To: materials-welding@googlegroups.com
Date: Friday, 1 February, 2013, 10:30 AM
Dear Experts,
Our company is going to make a new PQR and WPS but since I am new at ASME sec IX and B31.3, I would like to verify my tests before doing them.
So PQR specs are;
As per ASME Sec IX
Thickness -- 10mm (WPS qual. 10-15mm) Will qualify 10mm to 20mm for Impact required job WPS and 5mm to 20mm for non impact job WPS
Mat--- Plate - SA516 Gr60 & SA516 Gr70 (this will qualify bot P1G1 and P1G2 mats right?) For Non Impact Job WPS you can use this WPS for Joining P1 Gr1 to P1 Gr1 ,P1 Gr 2 to P1 Gr 2 and any combination of above
But for Impact Required Job WPS, you require to weld PQR coupon P1 Gr 1 to P1 Gr2 which will qualify for welding P1 Gr1 to P1Gr1,P1 Gr2 to P1 Gr2 and P1 Gr1 to P1 Gr2
Preheat --- 38°C Min(client spec) OK but how you are going to check temp so precise
Interpass Temp --- 250°C Max For non Impact Job WPS it is not essental But for Impact required Job WPS You can not exceed this Interpass temp
PWHT-- 620°C (120min, 100°C/hr) OK For Non Impact Job WPS you have to satisfy clause QW407.1 But for Impact required job you have to satisfy both clause QW407.1 1nd QW407.2
Pos -- 3G---OK it satisfy for both WPS of Impact andNonImpact WPS
Type --- GTAW + SMAW--OK but you require to measure the weld deposit thk of each process and address in PQR
Tests:
2 Tensile Test---
2 Face Bend Test
2 Root Bend Test
4 Side Bend Test (Do we need this?) yesIf you do not go for above bend test
5? Toughness Test (Charpy V-Noch at -46 C is enough?) --For Impact requirement , You require to test for Weld and,HAZ covering both Process,,For HAZ you require to test(Impact) for Both side HAZ of i.e.SA516Gr70 side and SA516Gr60 side.this condition is to satisfy the condition mentioned above ,TThis test temp of --46C will qualify to any temp up to minus 46C
Hardness--For WELD of each process,HAZ of each side preferably in HV10 (This is not code requirement but will help in future)
Radiography---Not mandatory from code point of view but will help to select the good portion for test
And the other thing is how big test coupon should I weld to get these tests. At least 400mm length of weld length
My suggestion is you qualify 2PQR one is with PWHT and second one is with PWHT by welding 2 coupons of 400mm lengthe ach
--
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.
No comments:
Post a Comment