Ken,
That may be possible but the increased surfaces speed may be more than the cutter and /or coating can handle.
As you increase surfaces speed you create more heat and the coating may fail, then the cutter substrate will be next.
Tialn is a coating that likes a little heat to work best. But it too has limits.
Tialn is normally run dry, but I have under some instances run coolant. I would run dry in this material, with maybe an air assist to clear chips.
If you are using a sharp corner mill, that corner is what will fail first so watch it like hawk until you know your setting are OK.
Once the corner chips then more heat will be generated and major chipping or fracturing will occur and the whole thing will go.
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(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |