Thanks for your good answers.
But I have a problem yet
I want write a WPS for overlay for 2 different layers,can i have a PQR with any thickness of the weld overlay deposit? there is no any limit on maximum or minimum thickness of the weld overlay deposite in my WPS?
Regards
H.Mirhosseini
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...
Correct post
As you know, for groove area an increase or decrease > 25% in number of passes needs requalification.
I want to know Where the number of passes mention in WPS?
Regards
H.Mirhosseini
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
Thanks a lot!
Could you tell me about following situation:
1- The same WPS and PQR (if Notch-Toughness test is NOT required).
2-
WPS:
Base metal thickness:16 mm
process:GTAW
PQR:
Base metal thickness(Same P-Number and G-Number):25mm
process:GTAW + SMAW
Deposite weld metal thickness:9 mm(root...
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...
Dear bmoorthy!
I'm a young inspector working in a offshore project.
Some of my questions are not a practical problem in my work.
learning is main reason for my questions.
However thanks a lot for your proper and influence answers.
Regards
H.Mirhosseini
tanks a lot!
I explain my problem in better way.
Base metal is API 5L, cladding with inconel and used filler is NiCrMo3.
We want to put a SOCKOLET (inconel) on clad pipes.
For this purpose we have to buildup on base metal(API 5L) and then the SOCKOLET is jointed to builduped zone on API5L.
In...
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...
