MitchYurko
Mechanical
I have an 8" Dia x 24" long rod of 4140 annealed steel which I am welding to a 1" thick plate of A36. The plate will be midway up the rod, so 12" from the end. I'm only welding on one side of the plate as the other side is inaccessible (inside a pipe). My question is two fold:
1) When I preheat the 4140 before welding, do I need to worry about heating the inaccessible end of the rod too, or can I just concentrate on the area around the weld?
2) I am heating the rod to 1075F after welding, then control cooling it to stress relieve the weld. Same question as 1)... do I need to worry about heating the inaccessible end of the rod equally?
My concern lies in that I want the stresses in the rod to be as homogenous as possible, but I worry about uneven stress if the rod is not evenly heated each time. Any advise and knowledge would be greatly appreciated. Thanks all!
Sincerely,
Mitch Yurkovich
1) When I preheat the 4140 before welding, do I need to worry about heating the inaccessible end of the rod too, or can I just concentrate on the area around the weld?
2) I am heating the rod to 1075F after welding, then control cooling it to stress relieve the weld. Same question as 1)... do I need to worry about heating the inaccessible end of the rod equally?
My concern lies in that I want the stresses in the rod to be as homogenous as possible, but I worry about uneven stress if the rod is not evenly heated each time. Any advise and knowledge would be greatly appreciated. Thanks all!
Sincerely,
Mitch Yurkovich