Re: [MW:17528] Combined welding process qualification

Hi may I know why do you want I back gouge after you have welded with GTAW. 

Sent from my iPhone

On 23 Apr, 2013, at 3:57 PM, james gerald <gerry_tup@yahoo.com> wrote:

If the GTAW weld is not part of Bend Test / Radiography, then GTAW welder has to be qualified separately.

 

SAW welding operator do not require separate qualification.

 

Thanks & Regards

J.Gerald Jayakumar
00968-99438165

From: Han Kuen Chow <chowhk2013@gmail.com>
To: materials-welding@googlegroups.com 
Sent: Tuesday, April 23, 2013 11:27 AM
Subject: [MW:17520] Combined welding process qualification

Dear Expert,

Could you please give your opinion for following matter?

Combined welding process: GTAW + SAW
Test coupon: Single U
Plate thickness: 20 mm
GTAW - root pass and hot pass (approx. 4 or 5 mm)
SAW - filler pass and capping (approx. 16 mm)
Root to be back gouging and filled with SAW.

Question:
1. Does this welder / welding operator qualify to weld with GTAW and SAW? Root to be back gouging and filled with SAW.


2. Is separate qualification required to qualified this welder / welding operator for GTAW + SAW?




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