Nippon Oil Corporation

Masahiro Hata

Satoshi Suda

Junichi Shibata

Hideo Yokota

Toshio Yoshida

Ken Sawada

Hiroyuki Hoshino

Yuji Shimomura

Kazuo Tagawa

Katsuya Takigawa

Shozaburo Konishi

Hajime Nakao

Eiji Akiyama

Shinichi Mitsumoto

Masanori Ibi

Toshiaki Wakabayashi

Hiroshi Kametsuka

Tadaaki Motoyama

Ichiro Inasaki

A multifunctional, high-performance hydrocarbon composition is demanded. Concretely, a metalworking oil composition having high workability even under a severer lubricating condition while resisting to high productivity, and further capable of suppressing deterioration of working environments or degradation of quality of a product without rise of lubricant cost, a metalworking oil composition for minimal quantitative lubrication system, which is excellent in characteristics as a water-insoluble lubricant for nonferrous metalworking and also in characteristics as a lubricant for cutting/grinding by minimal quantitative lubrication method, and can attain improvement in working efficiency and a further extended tool life, an electric discharge machining oil improved in working environments such as odor or skin roughness and further improved in processing rate, particularly processing rate in high-level finish, a rust preventing oil composition improved in resin compatibility, and a detergent excellent in adaptability with organic material are demanded. Therefore, metalworking oil which contains, as hydrocarbon base oil, hydrocarbon base oil having a density at 15&#xb0; C. of 0.7 to 0.8 g/cm, and including a n-paraffin content of 10 to 90% by mass, an aromatic content of 0 to 3% by volume, and a naphthene content of 0 to 20% by volume, a metalworking oil including the above-mentioned base oil and ester oil, and electric discharge machining oil, rust preventing oil, and a detergent composition including the above-mentioned base oil are provided.

Multifunctional hydrocarbon oil composition

The present invention provides a refrigerating machine oil, a compressor oil composition, a hydraulic oil composition, a metalworking oil composition, a heat treating oil composition, a lubricating oil composition for machine tools and a lubricating oil composition which comprise a lubricating oil base oil having % Cof not more than 2, % C/% Cof not less than 6 and an iodine value of not more than 2.5.

Compressor oil composition

Heat treating oil composition

The present invention provides a method of minimal quantity lubrication cutting and grinding that can improve cutting and grinding properties and extend the life of tools. The minimal quantity lubrication cutting and grinding method of the present invention comprises supplying a compressed fluid containing 0.1 to 15 percent by volume of oxygen together with a cutting and grinding oil (particularly preferably an oil composition comprising an ester) to processing spots of a workpiece.

Method of minimal quantity lubrication cutting/grinding processing and oil composition used therefor

Lubricating oil composition

Lubricating oil composition for machine tools

Hydraulic oil composition

Metalworking oil composition

Refrigerator oil, compressor oil composition, hydraulic fluid composition, metalworking fluid composition, heat treatment oil composition, lubricant composition for machine tool and lubricant composition

Growing community of inventors

Yokohama, Japan

Masahiro Hata