FCAW
FCAW
(OP)
Hallo experts, I am new in the Forum.
According to AWS D1.1:
-FCAW is a prequalified process.
-GMAW-S is not prequalified.
If I need to weld Groove Plate 3G, with Metal Cored Wire (150 A, 18V)is a short cirquid mode. is it a prequalified process or not?
Thank you in advance
According to AWS D1.1:
-FCAW is a prequalified process.
-GMAW-S is not prequalified.
If I need to weld Groove Plate 3G, with Metal Cored Wire (150 A, 18V)is a short cirquid mode. is it a prequalified process or not?
Thank you in advance





RE: FCAW
Short circuiting transfer mode is not prequalified, thus one would have to qualify the procedure in accordance with Clause 4 of AWS D1.1 if that is the applicable welding code.
Best regards - Al
RE: FCAW
RE: FCAW
RE: FCAW
But actualy I can not see (verify) that my WPS is welded on short cirquiting or in globular tranfer range. Or is it an other way?
Thank you in advance
RE: FCAW
If you don't mind, let me ask a couple of questions.
I am assuming that you are welding very thin parts considering the parameters that you listed. Why then have you chosen Metal Core wire for this process? Metal Core wire is usually chosen for the increased deposition rates that go along with making heavier welds. If possible, I would consider switching to a smaller solid wire - maybe .035 for the parameters that you listed.
Part of the reason I would suggest a solid wire is that you are operating far outside of the recommended operating parameters for the given wire. I don't know which brand of wire you are using but if you reference page 3 of the attached document you will see the recommended operating parameters for metal core wire. By running at such a low heat input you may not be recognizing the benefits of the metal core wire and your deposited weld metal may not be of the proper metallurgical properties.
RE: FCAW
That is the thing: I have to work with metal cored wire, because my company has a lot of stock of this type of wire, and I need to adapt my production. Thatfor I make WPS for 3G/3F welds,in thick plates, where the range of parameters is very low.
You look to be very familiar with the problem.
Thank you very much for your help.