On 02/13/2012 10:03 PM, gene heskett wrote: > On Monday, February 13, 2012 10:21:08 PM Jon Elson did opine: > >> gene heskett wrote: >>> Guy's, maybe I don't understand cutting alu as well as I thought. >>> >>> All along, I have believed that it was more important to keep the >>> oxygen in the air away from the cutting surface in order to slow the >>> formation of alu oxide on the surface, which in normal air, not >>> blown, can get a good start in 0.001 seconds >> I have some doubts about this. The oxide will form unless you run under >> Argon shielding, >> which may not be real practical. > Nitrogen should work equally well since the idea is to flood away the > oxygen. And its 99% cheaper.
Not exactly, Nitrogen can react with the magnesium in various alloys, There's a reason why noble gases, specifically Argon, and Helium are used as shielding gases. The only exception is CO2, where it's used in welding. -- -Mark Ne M'oubliez ---Family Motto Hope for the best, plan for the worst ---Personal Motto ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
