Re: [CAD_CAM_EDM_DRO] Re: Waterjet project - access to

Hi, well reuse of water is a nice idea, but cutting glass, the tiny little
pieces of glass will eat right thru the hardest of materials. it is quite
difficult to remove the very fine glass particles from the water. With glass
in the water a pump wont last long! cul brian f.

----- Original Message -----
From: "turbulatordude" <davemucha@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, July 29, 2002 9:35 AM
Subject: [CAD_CAM_EDM_DRO] Re: Waterjet project - access to


> Hi Dave,
>
> Thanks for the update.
>
> Seems that one gallon a minute would be much less than any industrial
> useage. It would also seem that re-uisng the water would be
> exccdinly simple. after a short non-turbulent stint, all the heavy
> stuff would fall out, a cyclone would pull most of the remaining
> stuff and filters could easily handle anything under the size of what
> is left. 60 gallons an hour is too simple, and you are correct the re-
> cycling would be no only dooable, but in the home shop cost effective.
>
> I would think that in a home shop, we could use magnets to pull
> ferros metals, and possible some caustic solution to remove
> aluminum. would have to think about that....
>
> Dave
>
>
>
>
> --- In CAD_CAM_EDM_DRO@y..., Dave Lantz <dlantz@a...> wrote:
> > responses intermixed---Dave L.
> >
> > >>If you have access to one of these can you satisfy some curosity ?
> > sure
> >
> >
> > >What pressures do they run and why ? seems like pressure would
> > >increase with thickness and or material and or speed. but is
> there a
> > >minimum ?
> >
> > I think the pressure intensifier here is about 50K psi, i can check
> with the
> > guys int he shop at some point
> > pressure does change, but not that much, mostly you need to adapt
> your
> > cutting speed for the thickness, or you get a really ugly cut near
> the
> > bottom of the plate.
> >
> > >obviously the pressure would help determine pump size.
> >
> > not sure what the terminlogy really means, but all the docs call it
> a
> > preasure intensifier, not a pump, per-se...
> >
> >
> > >Do they run a pump direct or pump and intensifier ? and what is
> the
> > maintenance schedule?
> >
> > oh, ok... see above, im guessing there is a pump somewhere...
> probalby
> > submersed in the well... (see below)
> >
> >
> > >>this would also help to narrow down the best choice to achieve
> that
> > pressure.
> >
> > a little more info for you:
> > the system runs an intensfier in the corner, with a long, semi-
> flexible
> > copper (or brass, not sure) tube. i remember one of the guys out
> in ths hop
> > saying that it is a very special tube, when it broke, we tried to
> replace
> > part of it with normal copper water hose, and it exploded, (noone
> hurt
> > luckily) it connects to the cutting head in a big parabola,
> suspended from
> > the ceiling. there is a preasure guage on the back wall, and when
> it drops
> > under a certain level, they ahve to shut the machine off and let
> the pumps
> > catch up, doesn't happen very much.
> > another side note, we had to get a well to power this thing, and
> the cutter
> > ran the well dry last year, and we had to drill another!
> > abrasive: we use garnet. we don'nt recycle it even though i think
> that we
> > should (not in control of that) it feets to the cutting heat
> through another
> > pump system, all VERY HEAVY duty!
> > the nozzles are saphire, and last quite a while, but are very
> expensive, you
> > can tell when they go bad because you no longer get a focused
> beam, just a
> > cone.
> > the table is a giant water tank, with metal slats over it like a
> plasma
> > table, it has 'rain gutters' on the sides, and drainage system.
> ive got
> > alot of ideas for a better system in regards to the table itself,
> let me
> > know what you think----dave L.
>
>
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