I've got a larger 1 1/8" screw I need to weld back together. About 3" of it broke off the end. I believe it to be mild steel (pipe wrench bit into it when extracting it) with perhaps a bit of nickel in it? It doesn't appear to be all out SS but hasn't rusted in its lifetime either? Its for a larger butterfly valve I am attempting to fix at work. Of course it has to be somewhat straight when its all said and done (really straight would be nice).
What I am planning on doing is beveling down the two ends and clamping the ends in a piece of angle iron to maintain alignment during welding and cooling. I will weld half cool and then reposition and weld the other half. Where I have to weld it I won't have to worry about the threads being there. When its all said and done will I have to heat treat this to relieve stress and maintain strength?
Any input on this would be much appreciated.
What I am planning on doing is beveling down the two ends and clamping the ends in a piece of angle iron to maintain alignment during welding and cooling. I will weld half cool and then reposition and weld the other half. Where I have to weld it I won't have to worry about the threads being there. When its all said and done will I have to heat treat this to relieve stress and maintain strength?
Any input on this would be much appreciated.
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