Fusion Welding
Fusion Welding
(OP)
I am fusion welding a rail that is approximately 8ft long. It has multiple components being welded with approximately 118 fusion welds. The parts are all within tolerance and I am welding from one end to the other. I find that the part is reaching thermal expansion. What is the best way to counteract this?





RE: Fusion Welding
Allow cooling time between welds.
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RE: Fusion Welding
RE: Fusion Welding
RE: Fusion Welding
maintain a very consistent environment such as room temp
2) If you are very consistent environment and still have problems just adjust the positions until the parts come out right.
RE: Fusion Welding
1. document weld procedure very closely
2. repeat weld process exactly the same each time
3. as mentioned earlier try to alternate or balance welds to reduce the effect of thermal expansion as much as possible.
4. once you have a stable part/process and you can predict how much the part is moving during the weld process, now you can go back to your weld fixture and introduce a little "pre-bend" in the opposite direction so that your parts come out straight.
Been there, done that, got the scars
danno
RE: Fusion Welding
There are some good hints here about avoiding weld distortion, many already mentioned by others. ht