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#1
 
04-25-2009, 10:38 AM
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I am pocket milling Kovar with small dia. & deep pockets. Roghing with ball mill then finishing with flat e.m. .078 dia 4flute ball going .122 deep. Speed of 8500 feed of 18. to rough at .003 depths of cut, then using 120 SFM with a chip load of .0002-.0003 per tooth to finish with flat em.(coated) My ball mill keeps breaking down? Kovar is annealed. High production parts. 85 pcs with lots of pockets , drilling & tapping. Any suggestions to help? Neil Dorin kneeldorin@yahoo.com  |
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