CAD CAM EDM DRO - Yahoo Group Archive

Re:DRILL ROD FOR LINEAR WAYS

Posted by cnc_4_me
on 2005-03-01 12:11:36 UTC
I think you a two are talking about two different things. Heating
metal to red is heat treating. Heating metal to 350 deg for a couple
of hours with a slow cooling is stress relieving. The way i
understand it.


Wally




--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Bruce Pigeon"
<bwpigeon@r...> wrote:
> Quite true, but I have been told that it's better to let it kool
in the
> oven. I am sure that there are women will let their husbands do
that. I
> know mine won't. So for those who have a wife like mine we still
have an
> alternative. Portland cement.
>
> Bruce
>
> -------Original Message-------
>
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> Date: 02/28/05 21:00:13
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS
>
> There's a simpler, cleaner method on the tempering. First, clean
off
> whatever
> carbon, or other gunk might be on the steel. Then, turn your
kitchen oven
> on,
> "bake", set it to 350 d3egrees F., set the steel on the rack, and
come back
> two
> hours later. Remove the steel, and let it cool. Done this way,
the steel
> retains its hardness, while the brittleness is relieved. No fuss,
no bother
>
> no Portland cement.
>
> Bill
>
>
> On Mon Feb 28 16:30:10 2005 Bruce Pigeon wrote:
>
> >I realize this is not on topic, but can be useful in this process.
> >
> >When I want to harden a piece of heat treatable steel I heat it
until a
> >magnet will not stick to it. Then I quench it in water or oil.
Cherry red
> >is not definite enough, but the magnet is. The old machinist that
taught
> me
> >said when metal looses it magnetism it will accept it's maximum
hardness.
> >
> >If you want to temper it, reheat it to 500 (or the specs for the
grade of
> >steel being tempered) use a heat stick. Any good steel spec book
will give
> >the heat treat range. He taught me to use different shades of
blue/black to
> >determine the temp.. Then drop it in a bucket of Portland cement
and let
> it
> >sit overnight. I use two plates of metal to separate the cement
so that
> the
> >part will go deep into the cement and be completely buried when I
pull out
> >the sheets of metal. Many times the parts will still be warm the
next day.
> >
> >
> >Bruce
> >
> >-------Original Message-------
> >
> >From: CAD_CAM_EDM_DRO@yahoogroups.com
> >Date: 02/28/05 14:43:31
> >To: CAD_CAM_EDM_DRO@yahoogroups.com
> >Subject: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS
> >
> >
> >--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Roger Hampson"
> ><r_.hampson@t...> wrote:
> >> Hi Allan,
> >>
> >> Over here in the UK we can obtain a specific steel bar that is
> >centerless
> >> ground to fine tolerances usually 0.5 thou 0.0005" that can be
> >hardened by
> >> heating to cherry red and quenching in water.
> >
> >There are three common varieties. We call them something hardening
> >to represent what medium is used to harden them.
> >
> >one is water, one is oil and the other is air. Each has it's own
> >properties. All move a little when heated so the soft stuff you
buy
> >is nice for a lot of stuff. but it is too soft for prolonged use
with
> >ball slides. Then again, it is cheap enough to replace a couple
times.
> >
> >Dave
>
>
> --
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Discussion Thread

edward c heil 2005-02-26 21:01:15 UTC DRILL ROD FOR LINEAR WAYS Ron Ginger 2005-02-27 05:39:16 UTC Re:DRILL ROD FOR LINEAR WAYS Roger Hampson 2005-02-27 06:45:46 UTC RE: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS R Rogers 2005-02-27 07:29:07 UTC Re: [CAD_CAM_EDM_DRO] DRILL ROD FOR LINEAR WAYS deepcavity 2005-02-28 09:48:05 UTC Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS Tony Jeffree 2005-02-28 09:59:37 UTC Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS Roger Hampson 2005-02-28 10:05:23 UTC RE: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS Les Newell 2005-02-28 10:23:17 UTC Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS Roger Hampson 2005-02-28 11:07:45 UTC RE: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS Randy Gordon-Gilmore 2005-02-28 11:59:11 UTC Alumin(i)um question for UK members turbulatordude 2005-02-28 12:43:28 UTC Re:DRILL ROD FOR LINEAR WAYS Roger Hampson 2005-02-28 12:54:06 UTC RE: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS turbulatordude 2005-02-28 12:59:41 UTC Re: Alumin(i)um question for UK members Polaraligned 2005-02-28 13:51:21 UTC Re:DRILL ROD FOR LINEAR WAYS Bruce Pigeon 2005-02-28 16:30:27 UTC Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS deepcavity 2005-02-28 17:20:20 UTC Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS Brian 2005-02-28 17:48:07 UTC Re: [CAD_CAM_EDM_DRO] Alumin(i)um question for UK members Bill Vance 2005-02-28 19:00:11 UTC Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS edwinkraemer 2005-02-28 21:13:28 UTC Re: Alumin(i)um question for UK members deepcavity 2005-02-28 22:11:03 UTC Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS Bruce Pigeon 2005-03-01 04:31:46 UTC Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS r_.hampson@t... 2005-03-01 04:40:52 UTC Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS turbulatordude 2005-03-01 06:33:19 UTC Re: Alumin(i)um question for UK members Bruce Pigeon 2005-03-01 07:02:13 UTC Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS cnc_4_me 2005-03-01 12:11:36 UTC Re:DRILL ROD FOR LINEAR WAYS Roger Hampson 2005-03-01 13:03:39 UTC RE: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS George Taylor, IV 2005-03-01 13:56:32 UTC Re: [CAD_CAM_EDM_DRO] Re: Alumin(i)um question for UK members R Rogers 2005-03-01 14:41:29 UTC Re: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS