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