[MW:4399] RE: 4393] RE: Failure of PQR in All Weld Tensile

Since your coupon is in the 6G position, is there a possibility that your welder is exceeding heat input by ‘weaving’ during the fill passes? 

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of prashant pansare
Sent: February-26-10 11:05 PM
To: RojiAbraham; mat wel
Cc: par kat; sol grea
Subject: [MW:4393] RE: Failure of PQR in All Weld Tensile

 

Roji (Guru), U r correct, but I m intrested in UTS & also I got all weld tensile values @ 549 / 567 Mpa in main welding procedure & 545 / 525 Mpa in Partial Repar procedure with the same electrode. Is there any effect of welding at the same position two times while Thru Thk. re-repair. Pl. reply PSP --- On Fri, 26/2/10, Abraham, Roji <Roji.Abraham@bg-group.com> wrote: From: Abraham, Roji <Roji.Abraham@bg-group.com> Subject: RE: Failure of PQR in All Weld Tensile To: "prashant pansare" <prashantpan_99@yahoo.co.in> Cc: "Katvi, Paresh" <Paresh.Katvi@bg-group.com>, "sol grea" <solutions.great@gmail.com> Date: Friday, 26 February, 2010, 2:25 PM Prashant .   Why r u using DNV OS F101 2000 INSTEAD OF 2007.   1.       Verify that the Yield stress of the weld metal is more than 80 Mpa  than the SMYS of the base material.  Check Appendix- C page 167 C302 , where it states that the YS of the metal should be minimum 80 MPA above the SMYS of the base material.     If YS of electrode  is not more than the  base material then the selection of the electrode is incorrect.   2.       Also verify what’s the all weld tensile value you have got for the  electrode specified in the electrode MTC.     Rdgs Roji     From: prashant pansare [mailto:prashantpan_99@yahoo.co.in] Sent: Friday, February 26, 2010 12:39 PM To: mat wel Cc: Katvi, Paresh; Abraham, Roji Subject: 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     Your Mail works best with the New Yahoo Optimized IE8. Get it NOW!. ______________________________________________________________________ BG Energy Holdings Limited Registered in England & Wales No: 3763515 Registered address: 100 Thames Valley Park Drive Reading, Berkshire RG6 1PT UK Telephone: +44 (0)118 935 3222 Website: http://www.BG-Group.com   This e-mail is intended only for the addressee named above. As this e-mail may contain confidential or privileged information, please advise us immediately if you are not the named addressee or the person responsible for delivering the message to the named addressee and delete all copies from your system. The contents should not be disclosed to any other person nor copies taken. If the content of this email or attachment is personal or unconnected with our business, BG Energy Holdings Limited accepts no liability or responsibility for it. Please also note that we make every effort to keep our network free from viruses and this email has been scanned accordingly. BG Energy Holdings Limited accepts no responsibility for viruses once an email has been transmitted.

 

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