Please could you explain item No. (2): to avoid PWHT , not to sensitize material, for eg:- Stainless steel. If we are made buttering on edge in stainless steel, how it will avoid PWHT? Please...
Thanks & Best regards
Krishnasamy. M
Welding Inspector
Fize Al- Shammary Gen. Cont. Est.
Kingdom of Saudi Arabia.
Mob: +966 592823768
Date: Tue, 25 Jan 2011 02:27:16 +0000
To: materials-welding@googlegroups.com
Subject: Re: [MW:9441] buttering on weld edges
From: manpreetsin88@rediffmail.com
Dear Mehta,
There are mainly 2 purposes to carry out buttering:-
(1) To compensate for poor joint preperation (wide root gap), material is added to both faces of joint.
(2) to avoid PWHT , not to sensitize material, for eg:- Stainless steel,
Regards
Manpreet Singh
On Mon, 24 Jan 2011 18:29:23 +0530 Fitria Rahman wrote
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Dear Mehta
Buttering weld is procedure to rectify wide gaps(root openings) greater than those permitted by AWS D11 (normally found intubular joint in structural connection) and/or client specification, but notgreater than 19 mm or twice the thickness of the thinner part, whichever islesser. Procedure shall be qualified.
Fitya a
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2011/1/25 B D Mehta <bdmehta.sap@isgec.com>
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Dear All
Any body can explain me why we do buttering on weld edges ofsimilar materials before welding .
Regards
B.D.Mehta
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