Re: [CAD_CAM_EDM_DRO] Re: Hardening rails

Water hardening steel needs about 1300 degrees or cherry red. You can't get
that with a propane torch. Water hardening steel will warp terribly maybe a
couple inches in 6 ft. I would buy ground Thompson shafting or equivalent.
Those Thompson bearings will most likely press groves into soft tool steel
very quickly.
Doug

----- Original Message -----
From: "brasslathe" <ed@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, November 24, 2003 1:27 PM
Subject: [CAD_CAM_EDM_DRO] Re: Hardening rails


> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "zxcvbnm12330134"
> <johnatl@m...> wrote:
> > I bought some W-1 Water Hardening Drill Rod to use with my
> > hand-me-down Thompson Super Ball Bushing linear bearings.
> >
> > The write-up said it was usable as-is, which I suppose it is,
> > but it isn't as stiff as I was expecting. Can I heat this with
> > my little propane torch, then quench it in a bucket or with a
> > water hose? I probably won't be able to get the whole thing
> > hot at once. Maybe I could put it in the oven at 500deg?
>
>
> Here is a link to a temperature colour chart showing the required
> temperatures with some explanation.
>
> http://www.abana.org/resources/education/tempil_guide.shtml
>
> Ed
>
>
>
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