The Japan Steel Works, Ltd.

Sanwakogyo Ltd.

Kabushiki Kaisha Toshiba

Hitachi Metals, Ltd.

Sanko Concrete Building Material Manufacturing Co., Ltd.

Shinji Tanaka

Toshifumi Nakajima

Hirokazu Madarame

Kazuhiro Miyagi

Masayuki Yamada

Kenichi Imai

Tsukasa Azuma

Kenichi Okuno

Tatsuya Takahashi

Eiji Maeda

Reki Takaku

Kazuhiro Miki

Kouichi Takasawa

Haruki Ohnishi

Hitohisa Yamada

Mitsuo Noborisaka

Masashi Noborisaka

Toshiaki Fukagai

Takashi Taniguchi

Yoshihiro Gotoh

Yuuji Satou

Kazuhiro Tanaka

Noriaki Yamamoto

Mamoru Mizusawa

An object of the present invention is to provide a motor rotor support suitable for an axial gap motor and a method for manufacturing the same. The motor rotor support for supporting a magnetic body disposed on a rotor of the motor is configured by laminating single materials each formed from a hot-worked material or a cold-worked material preferably composed of an 18Mn-18Cr nonmagnetic steel.

Motor rotor support and method for manufacturing same

A high strength and high toughness cast steel material of the invention has a composition comprising 0.10 to 0.20% by mass of C, 0.10 to 0.50% by mass of Si, 0.40 to 1.20% by mass of Mn, 2.00 to 3.00% by mass of Ni, 0.20 to 0.70% by mass of Cr, and 0.10 to 0.50% by mass of Mo, and further comprising Fe and unavoidable impurities. The high strength and high toughness cast steel material of the invention is produced by subjecting an ingot having the above composition to annealing at 1,000 to 1,100&#xb0; C., quenching at 850 to 950&#xb0; C., tempering at 610 to 670&#xb0; C., and then, if desired, stress-relief annealing at less than 610&#xb0; C.

High strength and high toughness cast steel material and method for producing the same

An object of the present invention is to provide a motor rotor support suitable for an axial gap motor and a method for manufacturing the same. The motor rotor support for supporting a magnetic body disposed on a rotor of a motor is configured by a nonmagnetic steel having a relative permeability of less than 1.005 and a 0.2% yield strength at room temperature of 550 MPa or more.

Nonmagnetic high strength steel motor rotor support and method for manufacturing same

The invention is to provide a coating structure material excellent in Mg corrosion resistance, which has resistance to corrosion caused by molten Mg and molten Mg alloys. The invention relates to a coating structure material including an Ni&#x2014;Co-base alloy substrate and a Co-base alloy coating layer formed on the Ni&#x2014;Co-base alloy substrate, wherein the Co-base alloy coating layer contains, in terms of % by mass, Ni: 20% or less, Co: 42% or more, Si: 2.8% or less, and Fe: 3.5% or less.

Coating structure material

A heat resistant cast steel containing, in mass %, C: 0.05-0.15, Si: 0.03-0.2, Mn: 0.1-1.5, Ni: 0.1-1, Cr: 8-10.5, Mo: 0.2-1.5, V: 0.1-0.3, Co: 0.1-5, W: 0.1-5, N: 0.005-0.03, Nb: 0.01-0.2, B: 0.002-0.015, Ti: 0.01-0.1, Fe and unavoidable impurities. A method for manufacturing a heat resistant cast steel, the method including melting raw materials to obtain a molten metal, refining and degassing the molten metal, pouring the molten metal into a predetermined mold to form a shape, performing an annealing treatment at a temperature of 1000 to 1150&#xb0; C., performing a normalizing treatment at a temperature of 1000 to 1200&#xb0; C., performing a first stage tempering treatment at a temperature of 500 to 700&#xb0; C., and performing a second stage tempering treatment at a temperature of 700 to 780&#xb0; C.

Heat resistant cast steel, manufacturing method thereof, cast parts of steam turbine, and manufacturing method of cast parts of steam turbine

An object of the invention is to make it possible to produce a copper alloy in which the S content is reduced with no contamination with Al, which has a good casting surface and good internal properties and in which eutectic compounds are refined. The invention relates to a slag for electroslag remelting for copper alloy, including CaF: 20 to 45% by mass, CaO: 10 to 30% by mass, SiO: 10 to 30% by mass, LiF: 10 to 20% by mass, and ZrO: 5 to 15% by mass with other impurities: at most 1% by mass, and satisfying a formula:17.0(LiF content+ZrOcontent)&#x2212;556&#x2266;CaFcontent&#x2266;4.1(LiF content+ZrOcontent)&#x2212;80.9,and the invention relates to a method for producing a copper alloy with the slag.

Slag for electroslag remelting for copper alloy and method for producing copper alloy material

A metal fitting for fixing a precast concrete board comprises: a supporting metal member with one end portion secured to the board and with the other end portion provided with a first screw to move the board upward and downward through the supporting metal member and a second screw to move the board backward and forward through the supporting metal member; and an adjusting metal member including a base board which is secured to a building's structure, and a pair of third screws for moving the board rightward and leftward through the supporting metal member, so that the position adjustments of the board in the three directions can be achieved independently of one another.

Precast concrete board fixing metal fitting

Growing community of inventors

Muroran, Japan

Shinji Tanaka