Where More Flutes Make Sense
A tool with many flutes can be effective for achieving a productive metal removal rate in titanium, where speed and chip load are constrained.
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MAG’s cryogenic machining is an extreme response to the danger of heat in machining titanium, but the company says heat has always been the enemy. The company offers 20-flute end mills for titanium because the large number of flutes offers a way to cut at low surface speed and light depth of cut, but still maintain a high metal removal rate through a high inch-per-minute feed rate. See video of a 20-flute tool.
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