On 08/02/2016 10:30 AM, Gene Heskett wrote: > Around 405F was the best I saw. I checkjed the mail and the bearings for > those motors were in it, so I put a fresh set in the noisiest one, run > on the vfd nice and quiet now. > > I left the oven on broil while I "customized my puller" so it could get > behind the load end bearing and pull it. About 4 hours had elapsed when > my back said it was done and I turned it off, so it should be cool > enough to saw by now. :) The first one I cut free from the edge of that > bar warped open in the saw kerf by nearly 3/8" in a 10" long cut, and I > was hours getting that hammered straight enough to use with a dead blow > hammer. The bar has had 2 pieces sawed off it now, and the bar started > out with a fat belly I had to trim about 80 thou off to get a straight > edge again. The other edge is even worse, good 1/8" of fat belly from > cutting off a previous piece. > > Silly Q: Going online to the metals pedlars, C360 seems to be what 90% of > the bar stock offered is. But regardless of the alloy, its all stated > as not being heat treatable. Since extruded brass is called half-hard, > or HO2, it can be played with in the oven (if its hot enough), but > always to soften. > > Are they simply trying to head off the idiot that thinks ferrous and > wonders why his stock is dead soft after he heat treated it like steel? > > Cheers, Gene Heskett
Gene, You can't "heat treat" brass/bronze/copper etc (non-ferrous) to harden. You can only anneal those metals. They do, however, work harden, which annealing takes away. Mark ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
