Re: [CAD_CAM_EDM_DRO] Hardening rails

On Sat Nov 22 10:32:35 2003 zxcvbnm12330134 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?
>
>Thanks for any advice!
>
>Regards,
> JJ

Here's some General info:

AISI W-1 tool steel:
Water hardening, but oil quenching is recommended instead, as this will reduce/
prevent warpage, cracking, and distortion.
Carbon: 0.60 to 1.40%
Wear resistance: medium
Toughness: medium
Red-Hardness: very low
Distortion in heat treat: low to medium
Forging: start at 1,800 to 1,900 deg F
Austenite forging: yes
Hardening: 1,400 to 1,550 deg F
Tempering: 350 to 650 deg F (you can put it in the oven for an hour or two,
at 350, and this will let it stay reasonably hard, while drawing out any
brittleness).
Rc hardness: 64 to 50

Hope thats of help.

Bill

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