Hey guys quick question.
I have to hold some tight tolerance on some punch pins, I can pretty much only get 01, 4140 and 1045 in a pinch. I do get some warping with both oil and water quench but do leave enough to hard turn to final D without toooooo much trouble, however wondering if there was another way, even 4140 pre-hard is pretty good left as is... I just find when it gets hard it polishes just a little better and will probably last longer. Can 4140 be air quenched by leaving it out to stop warping, 40-45C would be well hard enough.
I have to hold some tight tolerance on some punch pins, I can pretty much only get 01, 4140 and 1045 in a pinch. I do get some warping with both oil and water quench but do leave enough to hard turn to final D without toooooo much trouble, however wondering if there was another way, even 4140 pre-hard is pretty good left as is... I just find when it gets hard it polishes just a little better and will probably last longer. Can 4140 be air quenched by leaving it out to stop warping, 40-45C would be well hard enough.