I have some ruby orifices measuring -- two sizes 11.5 and 26 thousandths. They are set in brass cylinders measuring .125 by .125 with a slight tapered end. They also have stainless steel screens to keep them from clogging. I usually press fit them into a reamed hole.
I can spare a few if Gene or someone would like to try them. Ken dave wrote: > On Fri, 2009-11-20 at 16:39 +0000, Andy Pugh wrote: > >> 2009/11/20 Gene Heskett <gene.hesk...@gmail.com>: >> >> >>> A cube of dry ice sitting on >>> it would help, but would raise the available oxygen too. >>> >> I am fairly sure it would displace the oxygen (being heavier) and so >> would both cool and reduce oxide formation. >> >> You might have hit on a cunning plan, and it would look cool too. >> >> > > Carbon Dioxide doesn't disassociate easily but will if pushed hard. > It cannot be used in heat-treating furnaces for that reason but for > cooling/shielding Al machined parts I think it will work just fine. > > I'm not sure the kinetics of Al oxidation are as aggressive as Gene > states but cannot find any evidence to support or disallow such a claim. > The oxidation curve, at least at high temps (600 F), is parabolic so it > limits fairly quickly. > > A couple of alternatives for small orifices come to mind. Diesel rebuild > shops should always have a supply of used injector nozzles. I understand > the newer ones are carbide. > > IIRC Gene had a tap remover (crude edm) running at one time. That should > fab almost any small hole he wants. :-) > > Small volumes of oil/mist might be available by using model airplane > engines as pumps. > > Just thinking out loud. Usually dangerous. > > Dave > > > > > ------------------------------------------------------------------------------ > Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day > trial. Simplify your report design, integration and deployment - and focus on > what you do best, core application coding. Discover what's new with > Crystal Reports now. http://p.sf.net/sfu/bobj-july > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Kenneth Lerman 55 Main Street Newtown, CT 06470 203-426-3769 ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
