LUBRICANT FOR MACHINING, ADDITIVE FOR MACHINING, AND MACHINING METHOD

WIPO Patent Application WO/2012/115142

A1

Provided is a lubricant for machining aluminum alloys and the like which exhibits superior seizure resistance. The lubricant for machining according to the present invention is interposed between the coated surface of a machining tool coated with an amorphous carbon film and the surface to be machined of a material to be machined which comprises aluminum or an aluminum alloy material and is to be machined by contact with the coated surface. The lubricant for machining is characterized in that 100 mass% of the lubricant comprises 8-50 mass% of a macromolecular compound having a molecular weight of 8,000-1,000,000 and having surface functional groups consisting of at least one type of group among carbonyl groups, amino groups, carboxyl groups and hydroxyl groups. Such a macromolecular compound having a high molecular weight strongly adheres to an amorphous carbon film or the like on a machining tool. As a result, the presence of the lubrication film between the machining surface and the surface to be machined is ensured, thereby inhibiting the direct contact of the surfaces and thus seizing, even when aluminum alloys, which are highly susceptible to seizing, are highly deformed.

MATSUI MUNEHISA (JP)
MORI HIROYUKI (JP)
OHMORI TOSHIHIDE (JP)
TOHYAMA MAMORU (JP)

PCT/JP2012/054257

August 30, 2012

February 22, 2012

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TOYOTA CHUO KENKYUSHO KK (JP)
MATSUI MUNEHISA (JP)
MORI HIROYUKI (JP)
OHMORI TOSHIHIDE (JP)
TOHYAMA MAMORU (JP)

C10M149/22; C10M101/02; C10M143/00; C10M143/06; C10M145/04; C10M145/14; C10N20/04; C10N30/00; C10N40/24

JPH1036872A	1998-02-10
JPS413728B1
JP2004359813A	2004-12-24
JPH1150083A	1999-02-23
JP2004358495A	2004-12-24
JP2007136511A	2007-06-07
JP2010095792A	2010-04-30

MORIOKA Masayuki et al. (JP)
Morioka Right 往 (JP)

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