2009/11/20 Leslie Newell <les.new...@fastmail.co.uk>: > Carbon dioxide is 66% oxygen (CO2). As aluminum is very active it will > strip oxygen out of the CO2.
The electronegativity of Al is 1.6, and that of iron is 1.8 (cf 2.5 for Oxygen) CO2 works perfectly well as a shielding gas for MIG welding of steel at molten temperatures, I would not anticipate it reacting strongly with Al at machining temperatures. I have MIG welded aluminium with CO2 shielding gas, and it worked (whilst being demonstrably non-ideal) -- atp ------------------------------------------------------------------------------ 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
