If I am reading D1.1 right a GMAW single flare bevel groove in 1/8" material will not fall into the Prequalified criteria because the Prequalified PJP groove joint details in Figure 3.3 clearly states 3/16" material min. I am looking for someone to disagree with me because I find this as odd, most of the minimum material thicknesses qualified in section 4 is 1/8” material. I would like to hear your thoughts.
You can find prequalified procedures for flare bevel and other groove profiles, for materials 3/16" and below, in the AWS D1.3 sheet metal code.
Tim
Hi Tim,
Thank you for the reply, however the contract and fabrication documents specify the use of D1.1 only therefore I cannot deviate from there. Thanks again!
Kevin
Perhaps it is because there is such a small radius on 1/8" wall tube that it is considered to be a fillet weld?
I could be wrong, but I put my money on a concern related to burn through. Prequalified GMAW is either spray or globular transfer; too hot for thinner material when welding flare bevel or flare vee grooves.
Best regards - Al
Hi Al,
The weld is a .125” X .125" tack weld that holds some expanded metal in place to an 11 GA. formed channel so I do plan on staying out of short arc. Thank you for the reply.
Kevin
A good answer as well, and probably closer to what the line of thinking was.
Yup, AWS D1.3 is what you want.
Hi WeldinFool,
Thank you for the reply, however the contract and fabrication documents specify the use of D1.1 only therefore I cannot deviate from there. Thanks again!
Kevin
Topic American Welding Society Services / Certifications / Prequalified material thickness for flare bevel groove
