On Monday 09 May 2016 22:40:45 andy pugh wrote: > I am not an expert in diamond sawing, so take that as a caveat. > However, as far as I know diamond turning of iron-based materials is > almost never done. For iron-based materials the abrasive of choice is > CBN. > The reason for this is, as I understand it, is because carbon is > soluble in iron. In fact the whole marvellous thing that is ferrous > metallurgy is just playing games with the various things that > solutions of carbon dissolved in iron can do when you heat and cool > them. > > Diamond turning of aluminium and copper alloy parts has been standard > for 50 years or more. You won't find many references to > diamond-turning of iron alloys.
Thanks Andy. I should point out that I am not turning it just yet, but sawing off a slice, nominally 1.75" thick, that I can turn, eventually into a block the same height as the compound carriage is, to add some mass to the crossfeed, and to offset the QC holder to the rear and right, thereby putting the typical cutting tool much closer to the center of the Z carriage so the cutting forces are essentially straight down on the center of the Z carriage. And that I am not achieving a temperature where the carbon (in the diamond dust) can dissolve into the iron. At no time has the blade or the workpiece been heated to the point I can't rest my hand on either. Slow, but it seems to be a pretty precise way to do it, so far. Got a huge pile of grey cast iron dust though. Ignore that thumping sound, thats just me, knocking on wood. ;-) Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Mobile security can be enabling, not merely restricting. Employees who bring their own devices (BYOD) to work are irked by the imposition of MDM restrictions. Mobile Device Manager Plus allows you to control only the apps on BYO-devices by containerizing them, leaving personal data untouched! https://ad.doubleclick.net/ddm/clk/304595813;131938128;j _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
