Mitsubishi Heavy Industries Limited

Masakatsu Fujita

Toyoaki Yasui

Toshiya Watanabe

Ichiro Nagano

Katsunori Akiyama

Tsuneo Egawa

Akihide Kakutani

Yoshiharu Tonohara

Yukio Kodama

Chiaki Yasuda

Hisashi Kubokawa

Taiji Kikuchi

A surface coating film includes, a base material which is a hard material; and an oxidation-resistance coating layer containing, as a main component, a complex oxide of Li and at least Al and covering a surface of the base material. Further, a method of manufacturing a surface coated member, includes, supporting a base material which is a hard material in a hermetic container with the use of a holder arranged in the container; arranging a complex oxide forming target containing Li and at least Al, as main components, in the container; feeding oxygen into the container; and forming an oxidation-resistance coating layer that covers the base material to obtain the surface coated member by effecting electric discharge between the complex oxide forming target as an anode and the holder as a cathode.

Surface coating film, method of manufacturing thereof, cutting tool and machine tool

A gear shaper effects a gear shaper cutting method by dry cutting, using a pinion cutter made of high-speed tool steel at a high efficiency. The pinion cutter of the gear shaper is coated, at least on the flank thereof, with at least one layer of film having a composition comprising: (Ti.sub.(1-x) Al.sub.x)(N.sub.y C.sub.(1-y) ), wherein 0.2.ltoreq.x.ltoreq.0.9 and 0.2.ltoreq.y.ltoreq.1.0. Gear shaper cutting is performed at a cutting speed of 300 m/min or less.

Gear shaper cutting method and apparatus

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Ritto, Japan

Masakatsu Fujita