In ASME Sec IX, QW 453, note 1, we read:
"for processe depositing a weld bead width greater than 1/2 in. wide, the weld overlay shall consist of a minimum of three weld beads in the first layer"
My questions:
1-How many layers shall be welded in corrosion resistance overlay? for example it can...
As you know, for groove area an increase or decrease > 25% in number of passes needs prequalification.
I want to know Where the number of passes mention in WPS?
Regards
H.Mirhosseini
In AWS D1.1, 4.8.1, permited melt-through is 3 mm except for T-Y and K connection.
Now if I have a welder test qualification coupon according to figure 4.27 and melt-through is more than 3 mm can I accept this welder or not?
Regards
H.Mirhosseini
In AWS D1.1, 4.8.1, permited melt-through is 3 mm except for T-Y and K connection.
Now if I have a welder test qualification coupon according to figure 4.27 and melt-through is more than 3 mm can I accept this welder or not?
Regards
H.Mirhosseini
In ASME Sec IX, QW-256, change AWS class is supplementary and nonessential variable.
In QW-404.12 "change in SFA specification filler metall" needs requalification but in QW-404.33 this variable is nonessential.
I cant understand this contradiction. could you explain about it?
Regards...
According to QW-404.5 a change from one A No. to any A No. needs requalification. but I cant understand the mean of this sentence:
"qualification with A No. 1 shall qualify for A No. 2 and vice versa"
Could you explain this sentence?
Thanks
H.Mirhosseini
Regards
H.Mirhosseini
According to item 4.12.4.1 of AWS D1.1, qualification for CJP tubular groove weld requires a test coupon conformanced with figure 4.27 and a sample test.
In figure 4.27 minimum nomial OD is 6 in.
As I know we can find qualified range in Table 4.2 and as per T4.2 a pipe with OD 6 in. qualified 6...
In AWS for non-prequalified WPS fillet weld, a mock-up test is required and several Macro sample are made from mock-up specimen.
cuold you me more about mock-up?
how we made a mock-up specimen(size...)?
thanks
Regards
H.Mirhosseini
I have a questoin for QW200.4(a) of ASME SecIX where we read "one or more processes or precedures may be deleted from a qualified combination procedure".
My WPS:
Base metal thickness:14 mm
process:GTAW
My PQR:
Base metal thickness(Same P-Number and G-Number):20mm
process:GTAW + SMAW...
I have a question about Buildup.
I have a WPS for buildup a clad material(In this WPS first the base metal grind down to clad material and then the filler metal is deposited.) and I want to support my WPS with a PQR.
Please tell me about the test coupon that we shall prepare for this PQR...
I have a question about QW-217 of ASME Sec IX where we read, “When the cladding thickness is not included in the design calculation”.
Please tell me when and why we don’t calculate thickness of clad in design?
Tanks
Regards
H.Mirhosseini
According to Qw-153 (C) ASME Sec IX specimens shall have a tensile strength more than minimum specified tensile strength of the weld metal when the applicable Section provides for the use of weld metal having lower room temperature strength than the base metal.
Now, please tell me about...
Hi to all !
this is my first question!!
We want to weld API 5X, clading by Inconel, to Inconel 625 and used filler metal is Er NiCrMo3.
We have a PQR for Inconel to Inconel and used filler metal is Er NiCrMo3.
I think if I have a PQR for API 5X to API 5X with used filler metal Er NiCrMo3, then...
Hi to all !
this is my first question!!
We want to weld API 5X, clading by Inconel, to Inconel 625 and used filler metal is Er NiCrMo3.
We have a PQR for Inconel to Inconel and used filler metal is Er NiCrMo3.
I think if I have a PQR for API 5X to API 5X with used filler metal Er NiCrMo3, then...
