AS per ASME Sec.IX QW-283, its applicable scope is as per QW283.1.
For your requirement, you can use an Groove(Butt) weld WPS to support your requirement and it doesn't require a Buttering PQR. It comes under weld Build up as per QW202.3 and thiskness ranges as per QW 451.1
J.GERALD JAYAKUMAR 00919344954677
--- On Thu, 2/3/11, sooeey2u <robertp@westernp.com> wrote:
> From: sooeey2u <robertp@westernp.com>
> Subject: [MW:9715] Buttering Qualification Procedure???
> To: "Materials & Welding" <materials-welding@googlegroups.com>
> Date: Thursday, February 3, 2011, 7:52 PM
> For future use, need to have a
> qualified "buttering" weld procedure in
> place to use for closing a root opening in a repair
> situation.
>
> As per Section IX QW-283, I intend to quality a basic butt
> welding
> procedure specification using a .375" thk P-1 matl.
> plate, single V
> groove joint design with metal backing with SMAW
> process. The root
> opening will purposely be large and will surface weld metal
> buildup
> with a deposit of .1875" thk, then make subsequent weld
> passes to join
> the members.
>
> During each deposition pass of weld metal, the surface
> shall receive
> magnetic particle examination to reqs of Appendix 6 of Sec
> VIII Div 1.
>
> After successfull PQR and subsequent WPQ tests, what
> thickness range
> of "butter" weld metal is the production welder qualified
> to?
>
> According to QW-283.3 Buttering Thickness, I understand
> that if
> thickness of "butter" weld metal is less than .1875" that
> the actual
> deposited "butter" weld metal becomes the minimum
> qualified
> thickness. And I would assume the maximum
> thickness would be twice
> the deposited "butter" weld metal thickness.
>
> My ? is what would be the minimum & maximum qualified
> thickness for .
> 1875" deposited "butter" weld metal thickness?
>
> Thanks in advance for comments and advice,
> QCRobert
>
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