Originally Posted by bma137 Since this has been happening, we have had to reduce the feed down to .006 ipr so that it doesn't fail. |
You failed to mention what your sfm was? My Allied book recomends 140 sfm for TiN and 220 for AM200 both of which seem fast to me. Also .006 - .013 ipr which seems ok. As an example I used an allied spade in 4340 forging at 350 bhn and the best I could get was 40 sfm / .003 ipr I was able to make it thru 4 holes 1.375 dia. and 10." deep. Any way it's all in the speeds and feeds good luck!
A.J.L.