Re: [CAD_CAM_EDM_DRO] Re: Small taps and dies

Right, that's not surprising to me. Personally, I'm scared stiff to try
using anything smaller than a #4-40...

On 8/20/07, Mark Vaughan <mark@...> wrote:
>
> Thanks Michael
>
> Link looks interesting, we have all used things like sintered bronze, I
> never knew you could get such strength from these processes, then again
> the
> material uniformity would be much better so stresses much more even
> throughout the material.
>
> As for fine taps though I am told these are still forged and the thread
> rolled into them since uniformity of material isn't good for the stresses
> they endure.
>
> All interesting stuff though.
>
> Thanks Mark
>
> Dr. Mark Vaughan Ph'D. B.Eng. M0VAU
>
> Managing Director
>
> Vaughan Industries Ltd, reg in UK no 2561068
>
> Water Care Technology Ltd, reg in UK no 4129351
>
> Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
> Phone/Fax 44 1872 561288
>
> RSGB DRM111(Cornwall)
>
> _____
>
> From: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO%40yahoogroups.com>
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com<CAD_CAM_EDM_DRO%40yahoogroups.com>]
> On Behalf Of Michael Fagan
> Sent: 20 August 2007 21:30
> To: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO%40yahoogroups.com>
> Subject: Re: [CAD_CAM_EDM_DRO] Re: Small taps and dies
>
> I believe he's referring to powder metallurgy, which is often used to make
> end mills and other high-end cutting tools. It's like sintering, but at a
> much higher pressure and temperature, which result in a solid and
> incredibly
> durable cutting tool. See http://en.wikipedia
> <http://en.wikipedia.org/wiki/Powder_metallurgy>
> .org/wiki/Powder_metallurgy
>
> On 8/19/07, Mark Vaughan <mark@... <mark%40vil.uk>. <mailto:mark%<mark%25>
> 40vil.uk.com> com>
> wrote:
> >
> > Hi Andrey
> >
> > Sintering, I think is when it's made of a powder that is compressed and
> > fused by heat, like bronze filters, and alloy pulleys.
> >
> > I wasn't aware you could do that with taps and drills, never thought
> they
> > would have enough tensile strength.
> >
> > Learn something new everyday, I'll have to look it up and see what can
> be
> > done, normally I get fine things EDM eroded for a job, but that's not
> > cheap.
> >
> > Thanks Mark
> >
> > Dr. Mark Vaughan Ph'D. B.Eng. M0VAU
> >
> > Managing Director
> >
> > Vaughan Industries Ltd, reg in UK no 2561068
> >
> > Water Care Technology Ltd, reg in UK no 4129351
> >
> > Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
> > Phone/Fax 44 1872 561288
> >
> > RSGB DRM111(Cornwall)
> >
> > _____
> >
> > .
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
> [Non-text portions of this message have been removed]
>
>
>


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