5F GMAW Pipe to Plate cert?

[HAWK]

Originally posted by JTMcC
What makes you think a CWI tested the coupon?


JTMcC.

As you said: "AWS welding qualifications don't have to be done by a CWI. Neither do API or ASME.
They often are, but just as often aren't."

I don't know that a CWI was involved with the testing. I was merely advocating FrOg speak with the person directly involved in the testing of his coupons if possible.

[JTMcC]

The guy doesn't have to be a CWI to be capable of qualifying welders.

If I understand you right, you made 20 welds, and picked the one you and your instructor thought looked the best and sent it to the lab? Hopefully I missunderstood.

What hall are you testing at?

JTMcC.

[FrOg]

great ... more junk .... so you are saying that possibly
the person who is "Certifying" me is not certified himself
through one of the majors ? ... great .... more ?'s

[JTMcC]

AWS welding qualifications don't have to be done by a CWI. Neither do API or ASME.
They often are, but just as often aren't.

JTMcC.

[FrOg]

well I hope he did, all of our certs are for structural steel applications, and they have to be done through an AWS CERTIFIED WELDING INSPECTOR ... the union halls here in AZ are pretty **** about this .... I'm just frustrated now .... he cannot provide proof of the inspection .... just the initial results ... I was told the CWI does not "save" the specimens sent in for Inspection ... so now I just have to pay another $125.00 to try to re-cert .... hopefully with a better explanation if it fails next time ... or it's another $125.00 ... and the whole thing starts over and over and over again ... ugh ....

[JTMcC]

Originally posted by HAWK
FrOg,

Maybe referring to cold lap where when the bead was continued there was insufficient penetration at the intitiation point of the tie in. Sometimes this can be detected visually. Can you talk with the CWI who tested the coupon?

What makes you think a CWI tested the coupon?


JTMcC.

[FrOg]

frustrating is the word .... can't fix what I don't know is wrong ...

[Andy249]

Good point Hawk.

If that seemed OK then it may have failed sidewall fusion. I've seen welds that look ok on the outside but have little to no sidewall fusion. I don't believe you would need to X-Ray to see this, just cutting a cross section of the weld, polishing it and etching it would show if the weld penetrated beyond the zone of the weld prep.

As Hawk said though, anyway of talking to whoever tested the piece? It would be really frustrating to receive back such a generic comment!!!

[HAWK]

FrOg,

Maybe referring to cold lap where when the bead was continued there was insufficient penetration at the intitiation point of the tie in. Sometimes this can be detected visually. Can you talk with the CWI who tested the coupon?

[FrOg]

Originally posted by Andy249
What is your definition of a cold weld Frog? A visual inspection of the weld piece will often give a few clues in this direction. Poor sidewall fusion can be a symptom of a cold weld as can lack of root penetration, although, lack of root penetration can also be thanks to too lower travel speed.

That is all the info I received. The cert failed for cold weld ....
nothing else ... I ran 20 + certs and our Instructor helped choose the best one .... It "looked" sound. Full penetration, nice heat patch on the back side of the plate, nice weld wash up on the pipe, nice bead thickness .... just can't understand "cold weld" ....

I would yhink the only way to really tell is by x-ray, but I was informed that there wasn't an x-ray done???? so how could the inspector tell w/o x-ray?

[Andy249]

What is your definition of a cold weld Frog? A visual inspection of the weld piece will often give a few clues in this direction. Poor sidewall fusion can be a symptom of a cold weld as can lack of root penetration, although, lack of root penetration can also be thanks to too lower travel speed.

[FrOg]

Originally posted by JTMcC
D1.1 calls for macroetch only.

JTMcC.

Can this detect COLD WELDS ?

[JTMcC]

D1.1 calls for macroetch only.

JTMcC.

[FrOg]

thanks for the responses ... but this is Pipe to Plate ....

[paulrbrown]

Australia Andy is probably right, Here, for F plate test, they just have you use 1/2" plate and put in at least 5/16" fillet on one side, then they put in a press and break whole 8" piece, no cutting needed, if they see penetration the whole length and no porosity/inclusions you are good for D1:1 unlimited thickness fillets. Paul