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welding 4130 material

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发表于 2021-9-1 00:56:26 | 显示全部楼层 |阅读模式
I am welding 4130 normalized tubing  (.75 OD x .035 wall) to a heat treated cadmium plated threaded rod end.  Will I need to strip the cadmium plate off before welding?And will I also have to anneal the rod end before I can weld it to prevent cracking?
Reply:Yes and Yes..Pre heat the 4130 also.....zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Is the rod end moly also ? If so I would strip the coating, but not anneal. I'd use 80S D2 filler. Lot of different thoughts on moly though.Anything worth doing is worth doing RIGHT
Reply:Yes the rod end is also 4130 chrom moly
Reply:Strip the coating.....Don't anneal.I hope the rod end doesn't have a teflon coated race in the bearing cup.Why weld the rod-end straight to the tube...why not use a tube adapter and keep the heat treat in the rod-end?- Paulhttp://all-a-cart.comWelding Cart Kits and accessories
Reply:The rod end is a purchased component that is called out on the drawing
Reply:Originally Posted by ZTFabwhy not use a tube adapter and keep the heat treat in the rod-end?- Paul
Reply:I do not have design authority on the drawing
Reply:then weld'er up with some 80S-D2 or 70S-2Anything worth doing is worth doing RIGHT
Reply:Does the drawing call out for any Post Weld Heat Treating (PWHT) to keep the tensile strength in the rod-end?Since you are using normalized tubing I would assume that it doesn't.But if it does, you need to use 4130 filler....otherwise do as olddad has suggested.- Paulhttp://all-a-cart.comWelding Cart Kits and accessories
Reply:no it does not call out any PWHT
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