Kabushiki Kaisha Kobe Seiko Sho

Mitsubishi Materials Kobe Tools Corporation

Kabushiki Kaisha Kobe Sieko Sho

Mmc Kobelco Tool Co., Ltd.

Yasuyuki Yamada

Yusuke Tanaka

Natsuki Ichimiya

Koichi Maeda

Yasushi Onishi

Kazuaki Tanaka

Taiitsu Aoki

Kenji Yamamoto

Toshiki Sato

Yasuaki Sugizaki

Tatsuya Yasunaga

Seiichiro Kitaura

Masahiro Machida

Tsutomu Ikeda

Genki Matsumoto

Yasunori Wada

Chunghsien Tsai

Yasutaka Okazaki

Takeo Komine

The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than &#x2212;150 &#xb0; C.

Manufacturing method for high-speed tool steel gear cutting tool

The invention provides a high-speed tool steel gear cutting tool in which fracture or chipping does not occur at the cutting edge, and which realizes excellent cutting performance over long periods. Moreover, a method of manufacturing a gear cutting tool including: a step for quenching a tool material comprising high-speed tool steel and which has been rough processed to a shape corresponding to a final shape of a gear cutting tool, to transform a structure of the tool material into martensite, a step for temperling the tool material after quenching to transform any residual austenite dispersingly distributed throughout a matrix of the martensite structure formed by the quenching, into martensite, and a step for finishing the tool material after tempering to a final shape, is characterized in that the tool material after quenching is subjected to sub-zero treatment involving cooling and holding at a temperature of less than &minus;150&deg; C.

High-speed tool steel gear cutting tool and manufacturing method therefor

Hard coating coated member having excellent wear resistance

A hard coating formed on a substrate material and having a first layer and a second layer of which, the first layer is a compound composed of one or more types of metallic elements selected to include at least aluminum or titanium from a group comprising aluminum, titanium and silicon; and also selected from one or more types of non-metallic elements from a group comprising boron, carbon and nitrogen, and the second layer is a lamination of AlBN on the surface.

Hard coating of excellent wear resistance and hard coating coated member

A coated member comprising a substrate, an intermediate layer on the substrate consisting essentially of aluminum and titanium, and a hard coating of (Al, Ti) (N, C) on the intermediate layer. The coated member has an improved wear resistance because the intermediate layer raises the level of adhesion between the substrate and the hard coating.

Coated member having excellent hardness and, adhesive properties

A hard coating of general formula (Al,Ti,Si)N or (Al,Ti,Si)(C,N) exhibiting excellent wear resistance and oxidation resistance properties, and a coated member such as a cutting tool etc. comprising a substrate and the hard coating formed on the surface of the substrate.

Hard coating having excellent wear resistance properties, and hard

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Akashi, Japan

Yasuyuki Yamada