ASME IX QW 200.4 (a)
ASME IX QW 200.4 (a)
(OP)
I have a WPS that is qulaified for 0.120" to 0.480" that was welded with a root using GTAW Flux Cored Rod and filled out using solid GTAW rod. I have another WPS that was welded with GTAW Solid GTAW for the full thickness with a range of 0.074" to 0.864" (using 3 PQRs .148", .280" and .480"). Can I use the 2 WPS in a joint on 8" 0.594" wall.
The root would be performed using the Flux Cored TIG rood and the fill out woud be with GTAW solid rod? Or do I have to qualify another weld procedure using the Flux Cored TIG rod and GTAW fill out using at least a 0.300" wall material to cover the actual weld of 0.594"??
The root would be performed using the Flux Cored TIG rood and the fill out woud be with GTAW solid rod? Or do I have to qualify another weld procedure using the Flux Cored TIG rod and GTAW fill out using at least a 0.300" wall material to cover the actual weld of 0.594"??





RE: ASME IX QW 200.4 (a)
Flux core and tig are two different welding processes. I do not think that FCAW wire would weld very well using a tig torch. Your root was probably welded with tig. You might want to find a welding engineer to consult with
RE: ASME IX QW 200.4 (a)
RE: ASME IX QW 200.4 (a)
RE: ASME IX QW 200.4 (a)
http://www.qwpinc.net/NEW/tigwire.htm
RE: ASME IX QW 200.4 (a)
I have a WPS that is qulaified for 0.120" to 0.480" using GTAW . I have another WPS that was welded with GTAW for the full thickness with a range of 0.074" to 0.864" Can I use the 2 WPS in a joint on 8" 0.594" wall.
If you combine WPS's they must be qualified for the joint. There are allowances for combinatins of procedures in QW 200.4(b) however that exception is allowed in situations in which the PQR was for material 1/2" thick or greater.
I may be missing something but that is how I see it.
Gerald
www.weldingdata.com
Gerald Austin
Iuka, Mississippi
http://www.weldingdata.com
RE: ASME IX QW 200.4 (a)
Since the WPS's have different essential variables the restrictions in QW 451 must be applied to each WPS.
To combine WPS's you have to apply the restrictions of
QW 200.4)b).
RE: ASME IX QW 200.4 (a)
RE: ASME IX QW 200.4 (a)