Warping when Welding
Warping when Welding
(OP)
I am tyring to find a way to elimiantae warping when I am welding a piece of 16ga steel to a piece of 5/16" steel. I have tried clamping, preheating, cooling, and I still end up with a rainbow shaped piece. If you have any suggestions please let me know.
Thanks.
Thanks.





RE: Warping when Welding
One way to reduce stresses and deformation is to weld a short length and immediately after that to peen the weld with a hammer to lengthen the weld bead. Then proceed the same way by short stretches not contiguous, until the whole piece is welded.
Otherwise you could try to bend the thick piece in the opposite direction (from that rainbow you see now), again welding short stretches that will finally straighten the piece to the original shape.
http://www.welding-advisers.com/
RE: Warping when Welding
Controls include:
1. The use of restraining fixture, strong tiebacks, or many tack welds.
2. The use of heat sinks or rapid of welds.
3. The pre-distortion or pre-bending of the parts prior to welding.
4. Balancing welds about the neutral axis or using wandering sequences, back step welding, or stitch welding.
5. Proper joint design selection and minimum size.
6. Preheat.
7. Peeing.
In your application, attempt stitch welding, weld 2 inches 5cm) skip 12 inches (30 cm) and repeta until the joint is completed.
Vita sine litteris mors est.
RE: Warping when Welding
I hope you meant "peening" in option 7. Noise we can deal with, the smell probably not!
Griffy
RE: Warping when Welding
RE: Warping when Welding
Some people will tell you to use many small tacks and the it won't pull. In actuality you will get poor penetrating and subpar welds.
Better joint design or mechanical fastening is probabaly your best solution but one approach is to put a bow into the part before welding which will be corrected by the welding.
RE: Warping when Welding
RE: Warping when Welding
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