Hard-carbon coated machine tool and cutting oil composition therefor
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United States of America Patent
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Issued Date -
Dec 2, 2004
app pub date -
May 28, 2004
filing date -
May 29, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A machine tool is used for machining a workpiece in the presence of a cutting oil composition. The machine tool includes a tool base and a hard carbon coating formed on the tool base. The hard carbon coating has 1 atomic % or less of hydrogen. The cutting oil composition contains a base oil and at least one of an ashless fatty-ester friction modifier and an ashless aliphatic-amine friction modifier.
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