Monday, March 7, 2011

RE: [MW:10185] Combination of GTAW & SMAW PQR for a WPS.

Dear Karthik
where can we find the interpretation of the paragraph of 200.4 a( and b). It seems like we can combine the separate pqr's on welding of one weld joint.
regards,
elshan.
 

Date: Sun, 6 Mar 2011 17:49:51 -0800
From: karthik6684@yahoo.com
Subject: Re: [MW:10174] Combination of GTAW & SMAW PQR for a WPS.
To: materials-welding@googlegroups.com

Hi,

Case-1:
According to QW200.4(a) and (b) you cannot combine these PQR's.
(b) For GTAW, SMAW, GMAW, PAW, and SAW,
or combinations of these processes, a PQR for a process
recording a test coupon that was at least 1⁄2 in. (13 mm)
thick may be combined with one or more other PQRs
recording another welding process and any greater base
metal thickness. In this case, the process recorded on the
first PQR may be used to deposit the root layers using
the process(es) recorded on that PQR up to 2t (for shortcircuiting
type of GMAW, see QW-404.32) in thickness
on base metal of the maximum thickness qualified by the
other PQR(s) used to support the WPS. The requirements
of Note (1) of tables QW-451.1 and QW-451.2 shall apply.

Case-2:
Yes/ you can use the welder(s) for combination of GTAW/SMAW


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 Sun, 3/6/11, Srinivas Engr <srinivas.gmsrini@gmail.com> wrote:

From: Srinivas Engr <srinivas.gmsrini@gmail.com>
Subject: [MW:10169] Combination of GTAW & SMAW PQR for a WPS.
To: "Materials & Welding" <materials-welding@googlegroups.com>
Date: Sunday, March 6, 2011, 1:27 PM

Dear All,

As per ASME sec 9
PQR 1 - GTAW T - 7.11mm , 1.5 to 14.22mm - A106 Gr.B

PQR 2 - SMAW T - 12.70mm, 5 to 25.4mm - A 106 Gr.B

No PWHT & No toughness.

My doubt is,1)  is it possible to combine the above WPS to make GTAW &
SMAW combination.?
If possible wats thickness range.?

2) & Regardless of WPS,
My welder is qualified with Tig Process & Arc Process in seprately,
Is it possible to put them in production for Same A106gr.b material in
combination like Tig root & Arc Filler.
If it not possible. Pl tell me para which restricts this.


Regards
Srinivas

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