[MW:24030] Re: GMAW short Circuit mode; QW403.10 & QW404.32

PQR 1) GMAW- 6.35mm 
Root pass by short circuit mode- 3mm 
Subsequent passes up to capping by pulsed spray mode-3.35mm 

WPS Range for less than 1.1T i.e 1.1 of 6.35 is 6.98==7mm

PQR 2) GMAW- 14.27mm 
Root pass by short circuit mode- 3mm 
Subsequent passes up to capping by pulsed spray mode- 11.27mm 

WPS range for more than 13mm  is 2T i.e 2x14.27 is 28.54.

On Thursday, December 24, 2015 at 8:18:42 PM UTC-8, Pravin Nimbalkar wrote:

Material specification: SA333 Gr.6
Impat requirement: Yes at -45 °C
PWHT: No.
Job thicknesses: 6.35mm, 7.92mm,8.56mm, 9.52mm,10.97mm,11.33mm,14.27mm, 15.88mm, 19.05mm,25.4mm


PQR 1) GMAW- 6.35mm
Root pass by short circuit mode- 3mm
Subsequent passes up to capping by pulsed spray mode-3.35mm
PQR 2) GMAW- 14.27mm
Root pass by short circuit mode- 3mm
Subsequent passes up to capping by pulsed spray mode- 11.27mm

WPS for above thicknesses,
Reference PQRs: PQR 1) & PQR 2)
In WPS- Base metal T range: 6.35mm to 12.7mm & 14.27mm to 28.54mm.
Weld metal t GMAW-Short circuit: 3.3mm
Weld metal t GMAW-Pulsed spray: 22.54mm

Reference Document: ASME sec.IX
a) QW403.10 GMAW short circuit mode T is 1.1T
b) QW404.32 GMAW short circuit mode t is 1.1t.
c) QW 403.6 for impact requirement.

Question 1)
above WPS T & t value is correct??, if not correct me with justification.
Question 2)
GMAW process remains same for making WPS with short circuit & pulsed spray mode

Note:We don't have thickness range between 11.33 to 14.27mm

Regards,
Pravin Nimbalkar
Welding Engineer
+966577620240
What's app: +919975724942

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