Welding questions
Welding questions
(OP)
We are doing some repair work. The existing I shape beam has a web of 3/16" thick. We are going to weld a continuous L6x6x5/8" angle along the web (the driection of the angle will be parallel to the web)
we specified 1/8" fillet welds 4" long @ 12" OC for the connection of vertical leg of the angle to the web (top and bottom).
but the contractor says the welds keep burning through the web (they are doing a mock-up).
I checked the AISC manual. 1/8" fillet welds is the smallest you can choose. I am wondering if the contractor is doing right.
Any suggestions? thanks.
we specified 1/8" fillet welds 4" long @ 12" OC for the connection of vertical leg of the angle to the web (top and bottom).
but the contractor says the welds keep burning through the web (they are doing a mock-up).
I checked the AISC manual. 1/8" fillet welds is the smallest you can choose. I am wondering if the contractor is doing right.
Any suggestions? thanks.






RE: Welding questions
Thanks.
RE: Welding questions
I have seen welds performed over painted surfaces. But I would recommend removing the paint. Refer to AWS D1.1 5.15
www.FerrellEngineering.com
RE: Welding questions
I agree, blowing thorough 3/16" should not be happening with a 1/8" fillet. Is the web rusted or pitted? One other thing to consider is that epoxy paint can be some really tough stuff. It might be acting as an insulator and affecting the arc? I'd suggest having them check that the machine settings are with in the electrode manufactures recommended range, grind a little paint and then try again.
regards,
Michel
RE: Welding questions
NEVER weld on galvanized material unless your take precautions.
RE: Welding questions
Leaving the paint in place will increase the tendency to have inclusions in the weld deposition. If the welds are inspected using nondestructive techniques, they are more likely to be rejectable if welding over paint.
Attached is a stick electrode welding guide...FYI...
RE: Welding questions
RE: Welding questions