Friday, February 26, 2010

Re: [MW:4386] RE: 4381] Failure of PQR in All Weld Tensile

Dear Sir,
I got 525Mpa in Partial Repair & 657/643 Mpa in main welding procedure with same E series.
So what care should be taken duing Thru. Repair Procedure?
Pl. reply.
PSP


From: Bathula Raghuram (Mumbai - PIPING) <R.Bathula@ticb.com>
Subject: [MW:4384] RE: 4381] Failure of PQR in All Weld Tensile
To: materials-welding@googlegroups.com
Date: Friday, 26 February, 2010, 12:56 PM

Change the consumable brand, all E70XX series may not give the higher UTS
thou AWS classification (E70XX series Min 490Mpa required as per code)  is same. There are prescribed consumables for API X grade like Bolher Fox series, BĂ–HLER FOX EV Pipe etc may give higher UTS, check with your consumable manufacturer and ask for this specific requirement, while sourcing consumable. or use higher TS grades like E9018M


From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of prashant pansare
Sent: Friday, February 26, 2010 12:39 PM
To: mat wel
Cc: par kat; roj abra
Subject: [MW:4381] Failure of PQR in All Weld Tensile

Dear All,
We are working on PQR & deatails are as folows :
Appl. Code - DNV OS F101,2000
PQR - Through THickness Repair. (SMAW)
Base Metal - API 5L X GRADE 60 - 12.75" OD X 14.3 mm THK.
Filler Metal - E-7018 H4R
Position -6G
After mechanical tests, we are getting all values in acceptable limits except All Weld Tensile results.(Reqd- 517 Mpa & Actual - 483 / 493 Mpa)
What is the reason & solution for the same?
Pl. reply.
PSP  

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