Skip to main content

[MW:24002] GMAW short Circuit mode; QW403.10 & QW404.32

By Materials & Welding
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

--
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/e00ac9b8-c314-4428-bd06-ef155ba0411d%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Comments

Post a Comment

Popular posts from this blog

Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

By Materials & Welding
Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change.   Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...
Post a Comment
Read more

Materails FAQs

By Materials & Welding
Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? (asked by: boris.vielhaber@vait.com) A: DIN Nr. = 2393 T.2, 2394 T.2, EN 10025 W. Nr. DIN 17007 = 1.0038 Design DIN 17006 = RSt 37-2, S235JRG2 (Fe 360 B) Q: What is St DIN 2391 BK material? (asked by: dmcandrews@automaticstamp.com) A: Precision steel tubes, cold-finished/hard. Q: What is C.D.W. Boiler Tube? (asked by: montydude123@yahoo.com) A: Cold Drawn Welded Boiler Tube. Q: WHAT IS W.Nr. 1.4301? PLS TELL US IN EASY LANGUAGUE (asked...
21 comments
Read more

The Schaeffler and Delong diagrams for predicting ferrite levels in austenitic stainless steel welds

By Materials & Welding
Introduction Ferrite is important in avoiding hot cracking in during cooling from welding of austenitic stainless steels. 'Constitution diagrams' are used to predict ferrite levels from the composition by comparing the effects of austenite and ferrite stabilising elements. The Schaeffler and Delong diagrams are the original methods of predicting the phase balances in austenitic stainless steel welds. Nickel and chromium equivalents A 'nickel equivalent' is calculated for the austenite stabilising elements and a 'chromium equivalent' ferrite stabilising elements. These are used as the axes for the diagrams, which show the compositional equivalent areas where the phases austenite, ferrite, martensite (and mixtures of these) should be present. Although intended to show the phase balance of weld fillers, these diagrams can also be used to illustrate the phase balance of the 'parent' material. There are different diagrams for dif...
Post a Comment
Read more