buttering on weld edges
B D Mehta
Dear All
Any body can explain me why we do buttering on weld edges of similar materials before welding .
Regards
B.D.Mehta
muthu barathi
Your question is not correct. any way buttering will be carried when
wide gap more than root gap recommended as per wps then buttering
required. Also when base metal size is less than the requirement size
of plate, then buttering will be carried out to build the plate. PQT
shall be done.
On Mon, 24 Jan 2011 11:48:33 +0530 wrote
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Dear Sir,
Thanking You,
Honesty is the best Policy
With Warm Regards,
Muthu Barathi P
Mobile No:00962788269821 (Jordan)
00962775401951
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Fitria Rahman
Dear Mehta
Buttering weld is procedure to rectify wide gaps (root openings) greater than those permitted by AWS D11 (normally found in tubular joint in structural connection) and/or client specification, but not greater than 19 mm or twice the thickness of the thinner part, whichever is lesser. Procedure shall be qualified.
Fitya a
--Dear All
Any body can explain me why we do buttering on weld edges of similar materials before welding .
Regards
B.D.Mehta
To post to this group, send email to material...@googlegroups.com
To unsubscribe from this group, send email to materials-weld...@googlegroups.com
manpreet
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
>
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
>
>
>
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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>To unsubscribe from this group, send email to materials-weld...@googlegroups.com
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>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.
>
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>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.
>
John Henning
In addition to the two listed, there is one additional case where buttering may be performed. Buttering may be performed to provide a buffer layer between incompatible materials or to enhance the weldability of a joint between dissimilar materials. While I am sure there are numerous examples, one instance I have experienced is welding Monel K500 to carbon steel – the Monel K500 was buttered with Monel prior to making the weld to avoid weld metal and HAZ cracking.
John
KRISHNASAMY MASANAM
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: material...@googlegroups.com
Subject: Re: [MW:9441] buttering on weld edges
manpreet
If you want to weld Stainless Steel such as SS316 to P91 material, normally most of the codes would require PWHT (approx. 760 deg) of P91 material, however SS316 would get sensitised at this temperature, to avoid this you can use Nickel weld base metal (ERNiCr-3) on P91 and do PWHT, later use same ERNiCr-3 to weld between P91 and SS316 without any PWHT.
Hope this helps
Regards
Manpreet Singh
On Tue, 25 Jan 2011 23:33:48 +0530 KRISHNASAMY MASANAM wrote
> Dear Manpreet Singh
> Pleasecould you explain itemNo. (2): to avoid PWHT , not to sensitize material, for eg:- Stainless steel.If we are made buttering on edge in stainless steel,how it willavoid PWHT?Please...