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High Speed Cutting of Titanium Alloy using
a Binderless cBN Tool
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| Kenichi HIROSAKI, Yoshinori FUNADA and Katsuaki SAKAYA |
In general, the temperature rise in the cutting edge is significant in
cutting process of titanium, and it promotes strongly the adhesion between
tools and work materials, resulting in tool failure in relatively short
duration. Therefore, in order to improve processing efficiency of cutting
of titanium alloys, a binderless cBN tool which had a high temperature
durability was proposed to apply in cutting of titanium alloy. Turning
tests of Ti-6Al-4V alloy were conducted under a high speed condition in
cutting speed of 250m/min, feed rate of 0.15mm/rev, depth of cut of 0.5mm
with an application of a high pressure coolant. As a result, the cutting
length was 2400m when the width of flank wear land of the tool reached
to 0.1mm, and it was confirmed that a binderless cBN tool exhibited very
low tool wear and kept sharp cutting edge compared to the tools made of
conventional materials such as sintered carbide, cBN and polycrystalline
diamond with Co-based binder.
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Keywords ■■■ |
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titanium alloy, binderless cBN tool,
tool wear, high speed cutting |
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