Forge welding HC to LC ?

quint

quint

Joined
Nov 29, 2011
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So is there any difference for forge welding low carbon to high carbon (say the cutting bit for a hawk) as compared to welding some 15n20 to 1084? I have gotten some successful welds with 15n20 and 1084 which I was pretty happy with. Tried the mild steel with a 1075 piece in between for a little hawk I wanted to do and it just would not take.

Just wanna know if it should be as easy, harder, easier. If its about the same then I know I am screwing something up on my end. Maybe not enough soak time for the thicker pieces. Does low carbon take a higher temp to weld to high carbon?

Thanks for any help in this matter.
 
Should be the same, are the thicknesses the same as your last try? If they are Even a little bit thicker a longer soak might help. Since you're using 1075 you could probably raise the temp a little for good luck.
Last thing I can think of, if otd from the hardware store make sure its completely clean and relatively smooth...more often than not that stuffs a mess.
 
Ok thanks Stacy. Probably wasnt giving it long enough to even out the heat or something.
 
Most folks try to weld when the outside is at heat....the whole billet, through and through, has to be at heat before you bring down the hammer.
 
Are your weld surfaces ground bright and clean prior to welding heat? It's harder on a hawk, but you can do it before the final fold closed pretty well. Hammer from the center of the weld outward, quickly...
 
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