Dear Nabeel,
I have doubt in 25 mm deposit thickness with GTAW because it ts not a good engineering practice and not economical as well.
You please re check with thickness range for GTAW in PQR if is that 100% sure 25 mm is correct than :
In this case according to QW-451.1 Table as attached:
200 mm is correct max. qualified "base metal" and "deposit weld metal" thickness as you found on WPS.
Regards,
On Mon, Apr 1, 2019 at 12:17 PM pradip kumar Sil <pradipsil@gmail.com> wrote:
As you said ,Test coupon is 50mm thick with GTAW 25mm and SMAW 25mm welding. Generally GTAW is used for root and hot pass, not for 25 mm. If you do 25 mm GTAW WELDING, your production rate as well as welding cost will be more.Follow ASME Sec IX QW-451.1, It will be helpful for you--On Sun, Mar 31, 2019 at 7:56 PM George Dilintas <dilintas@gmail.com> wrote:you are confusing the base metal thickness range and the deposited thickness range.Those are two distinct essential variablesΣτις Σάβ, 30 Μαρ 2019 στις 6:59 π.μ., ο/η Nabeel <khan.nabeelahmed@gmail.com> έγραψε:--I have reviewed a PQR for GTAW+SMAW welding. Test coupon is 50mm thick with GTAW 25mm and SMAW 25mm welding. On the WPS thickness range is given as upto 200mm for both GTAW and SMAW.How is this possible as more than 38mm test coupon qualifies for up to 200mm welding ??
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----Dr. Georgios Dilintas,Dipl. Ing. In Aeronautic and Space EngineeringPh.D in Mechanics of Solids - Computational MechanicsA.I.S, A.N.I, IRCA Lead AuditorWelding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis
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