On Saturday 21 November 2009 11:03:23 Erik Christiansen wrote: > If the cutting operation is hot enough to dissociate CO2, then there'd > better not be any oil about, especially as mist, unless Gene has his > detonation-deadening earmuffs on tight. ;-)
If the heat produced by the cutting operation is able to dissociate CO2, you have a freaking _serious_ problem anyway. CO2 extinguishers are successfully used in Mg/Al cutting environments that use oilmist. There is _no_ problem with that in practice. Yeah, you can say: But if in theory the Mg fire is able to dissociate the O from the CO2, you're screwed... . But in practice it doesn't happen. At least not that much that it matters. Hell, the Mg-oil mist is burning. We don't care if a few CO2 molecules are broken up by that. A CO2-filled machining room is _way_ better in that situation than an air-filled room (which has a _lot_ more free oxygen in it). You could say that an inert-gas filled room would be even better, but it simply does not matter that much in practice. -- Greetings, Michael. ------------------------------------------------------------------------------ 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
