[TheForge] Welding Spring Steel

Mon Dec 2 15:46:01 2002

My shipbuilder friend always takes a ball-pein hammer and peens the heck out
of it as it cools.
Says it relieves stress.
I wondered if he meant his own or the metal's...

> My weld supplier told me that 7018 was the correct rod for 4140
> the 200d. preheat is a good idea. weld in the annealed condition of course
>  Ed F <[email protected]> wrote:Somewhere way back when I
> came up with the conviction that welding 4140 is
> like welding tool steel. I have special rod and I pre-heat and post-heat
> then let cool slowly in vermiculite. Seems to work ok but I've mainly done
> it with H13, not 4140.
>
> Now I'm using some new soft spring steel as parts for my 2 piece lil giant
> die setup and I want to do the best I can welding it because it will be
> hammered. I plan to use 3/4" thick pieces for the top of the
> bottom die and
> I might weld stuff on for texturing and swaging. I suppose I
> could use mild
> plate (maybe superquenched) in many cases but I know I'll want to
> do some in
> the spring steel. I think it's 5160 spring steel. I got it years ago and
> was told I could treat it like 4140.
>
> Recently, a couple people have told me welding 4140 is no big deal at all.
> Just use 7018. Can that be true?
>
> Ed
>
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