max gap in sheet steel
max gap in sheet steel
(OP)
I had a situation arise in our fabrication department where two galvanized channels are to be welded together using GMAW. Both pieces are .070" thickness, have a radius edge and when joined together produce a flare-v-grove. The parts are about 4' long, this groove runs the entire 4' length and normally, when broke correctly, produce a minimum root gap. Well today we have 50+ pieces that mate fine at the ends but produce an opposite bow in the middle leaving a 1/4" gap in the middle tapering to the ends. I have a quality guy telling our fab dept. to stick 1/16" shims in the gap, weld it up and take the shim back out. I know in my gut sticking shims in a gap so we don't have to scrap 50+ parts is not a good idea but, I can't find any evidence in the customer's spec or AWS D1.3.
Can anyone reference me to a specific clause?
Can anyone reference me to a specific clause?





RE: max gap in sheet steel
RE: max gap in sheet steel
Best regards - Al
RE: max gap in sheet steel
RE: max gap in sheet steel
RE: max gap in sheet steel
Thanks
RE: max gap in sheet steel
That aside, you may wish to find out what they're using in the way of welding procedures. The use of prequalified procedures/joint details and their permissible root gaps are more restrictive than those qualified by test for joint configurations other than square grooves. They can be found in figures 3.1A through 3.3D.
RE: max gap in sheet steel
Thank you sirs,
RE: max gap in sheet steel
What is really obscure is when your quality procedures for inspection are "copy and paste" straight out of AWS.
RE: max gap in sheet steel
RE: max gap in sheet steel