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Re: [MW:8984] Combination of PQR for WPS

By Materials & Welding
manpreet,
 
you still cannot combine both these PQRs, you should either use PQR 1 or PQR 2.
 
Regards,
 
Praveen

--- On Wed, 12/29/10, manpreet <manpreetsin88@rediffmail.com> wrote:

From: manpreet <manpreetsin88@rediffmail.com>
Subject: Re: [MW:8979] Combination of PQR for WPS
To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
Date: Wednesday, December 29, 2010, 3:25 PM

Dear Pravin,

Thanks for your valuable feedback.

I did consider QW-200.4(b) and wanted further calrification so i raised this point,
now i would present actual ranges, no impact required

PQR 1-  1.5mm to 12mm
PQR 2-   5mm to 30mm 

Combined:- 5mm to 12mm, is it ok now?

Regards
Manpreet Singh





On Wed, 29 Dec 2010 13:32:29 , praveen alavandar <praveenakds@yahoo.com> wrote
Manpreet,
 
You cannot support combining these two PQR's to prepare a WPS having a wide range from 1.5mm to 30mm, you are deviating from the clause QW-200.4(b) of ASME Sec.IX.
see below.
 

"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."

 

So you will have,

 

for PQR 1 : WPS range : 1.5mm to 12mm (Without impact) & 2.5mm to 12mm (With impact) assuming you dont do a PWHT above the upper transformation temperature.

 

For PQR 2: WPS range : 5mm to 30mm (Without impact) & 15mm to 30mm (With impact)

 

Regards,

 

Praveen



--- On Wed, 12/29/10, Bathula Raghuram (Mumbai - PIPING) <R.Bathula@ticb.com> wrote:

From: Bathula Raghuram (Mumbai - PIPING) <R.Bathula@ticb.com>
Subject: RE: [MW:8975] Combination of PQR for WPS
To: "materials-welding" <materials-welding@googlegroups.com>
Date: Wednesday, December 29, 2010, 12:57 PM

5-12mm w/o impact, else 6-12mm
 
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of manpreet
Sent: Wednesday, December 29, 2010 12:03 PM
To: materials-welding
Subject: [MW:8974] Combination of PQR for WPS
 
Dear All,

Procedure qualification as per ASME sec ix,

I have 2 PQR:-
                        *PQR 1-   GTaw-6mm thick 
                        *PQR 2-   Smaw- 15 mm thick

What would be the thickness renge for base and weld metal?

for combined WPS,  base metal thickness range shall be 1.5mm to 30mm, am i correct?

Regards
Manpreet Singh


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