[MW:8764] RE: 8761] Re: With Backing & Without Backing (QW-433 )

That is correct for ASME Section IX.

John

-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Srinivas Engr
Sent: Thursday, December 16, 2010 6:48 AM
To: Materials & Welding
Subject: [MW:8761] Re: With Backing & Without Backing (QW-433 )

Hi,

Addition to above points.... Backing also refers, backing by weld
metal, that is backgouging & welding in root side.
if i am wrong correct me...

Regards
Srinivas

On Dec 16, 7:50 am, Karthik <karthik6...@yahoo.com> wrote:
> Hi,
> backing: a material placed at the root of a weld joint for
> the purpose of supporting molten weld metal so as to
> facilitate complete joint penetration. The material may or
> may not fuse into the joint.(Ex., Double welded groove,single welded groove with backing,backing may be of metal or ceramic)
>
> Without backing: There is no material placed at the root of joint and molten weldmetal itself facilitate complete hoint penetration.(Ex.,Single welded groove-Single V,without any metal or ceramic at the root of a weldjoint)
>
> Thanks & Regards,
>
> (Karthik)
>
> Karthikeyan.S  QA/QC Manager  Getabec Energy Co.,Ltd.  379,Moo6,Soi8,Nikhomphatana,  Rayong-21180,  Thailand.  Phone: 0066 38 897035-8 (Off)  Fax: 0066 38 897034  Hand Phone: 0066 892512282
>
> --- On Thu, 12/16/10, SP <mechweld...@rediffmail.com> wrote:
>
> From: SP <mechweld...@rediffmail.com>
> Subject: [MW:8744] With Backing & Without Backing (QW-433 )
> To: "Materials & Welding" <materials-welding@googlegroups.com>
> Date: Thursday, December 16, 2010, 2:46 AM
>
> Hi..Friends..
>
> What is known as WITH BACKING & WITHOUT BACKING..? In ASME SEC IX As
> shown in QW-433.
>
> Regards
> S.PM
>
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