Mitsubishi Denki Kabushiki Kaisha

Ishikawajima-harima Heavy Industries Co., Ltd.

Nikon Corporation

Mitsubishi Electric Corporation

Other

Ihi Corporation

Mitsubishi Chemical Corporation

Japan Science and Technology Corporation

Renesas Technology Corp.

Kabushiki Kaisha Toyota Chuo Kenkyusho

Hirose Electric Company, Ltd.

Mitsubishi Denki K.k.

Neturen Co., Ltd.

Mitsubushi Denki Kabushiki Kaisha

Kotec's Co., Ltd.

Akihiro Goto

Masao Akiyoshi

Mitsutoshi Watanabe

Hiroyuki Ochiai

Toshio Moro

Takuji Magara

Takashi Furukawa

Yoshio Ozaki

Kazushi Nakamura

Katsuhiro Matsuo

Yoshihito Imai

Mitsuyoshi Wada

Hidetaka Miyake

Takashi Arita

Takao Takahashi

Yoshiharu Takahashi

Hiroyuki Teramoto

Hirokazu Taki

Tooru Inoue

Satoshi Ookyuu

Toru Takagi

Naotake Mohri

Hiroshi Nishimura

Yasuhito Suzuki

Naomasa Shiraishi

Kinya Kato

Nobutaka Magome

Hiroshi Shirasu

Muneki Hamashima

Kazuya Okamoto

Yutaka Ichihara

Tatsushi Sato

Toshio Matsuura

Seiji Satou

Nagao Saito

Yoshikazu Nakano

Mikiya Arai

Naoto Kihara

Junji Ikeda

Shigeru Saburi

Hirochika Kawaguchi

Naotake Mouri

Yoshio Matsuda

Hideyuki Ueno

Takashi Yuzawa

Nobuyuki Sumi

Yukiharu Okubo

Yoshiaki Kohama

Satoshi Suzuki

Atsushi Taneda

Yoshihiro Kamon

Eiji Nakayama

Manabu Yoshida

Masahiro Okane

Kiyohito Oda

Masami Ebi

Takashi Genma

Toshio Nakashima

Tatsuto Urabe

Masayuki A Suzuki

Takashi Hashimoto

Yukio Sato

Masahiro Yamamoto

Takeshi Araki

Junichi Shibata

Akihiro Suzuki

Hisashi Yamada

Tomoaki Ito

Taichiro Tamida

Hideto Iwamoto

Koji Bando

Hironori Matsushima

Yoshikazu Ukai

Takashi Gemma

Hiroyuki Mori

Hirotaka Sunada

Yoshiki Tsunekawa

Tomoko Sendai

Yoshihiro Domon

Mamoru Kosuge

Koji Akamatsu

Shoji Oyama

Isao Ito

Kazutaka Ogo

Munenori Kimura

Kizo Hayakawa

Kazunari Teramoto

Yasushi Fukuzawa

Kouichirou Hattori

Hisayoshi Sekiguchi

Rokuro Kimura

Yoshimasa Kuwano

Kouichiro Hattori

Akinobu Kawazu

Yusuke Yasunaga

Katsushi Furutani

Takahisa Masuzawa

Kohei Shimamoto

Kazuo Souno

A method for manufacturing a rack bar having a first rack and a second rack is provided. The first and second racks have an angular positional difference around an axis of the rack bar. The method includes forming a first flat surface and a second flat surface on an outer circumference of a single hollow shaft member, with the angular positional difference being provided between the first and second flat surfaces, and forming the first rack on the first flat surface and the second rack on the second rack surface by press-fitting one or more mandrels into the hollow shaft member in a state in which one or more teeth dies corresponding to the first rack and the second rack is pressed against the first flat surface and the second flat surface.

Method for manufacturing rack bar

Provided is a production method whereby corresponding carboxylic acid esters can be obtained from a variety of carboxylic acids at a high yield, even under conditions using a simple reaction operation and little catalyst and even if the amount of substrate used is theoretical. A production method for carboxylic acid ester, whereby a prescribed diester dicarbonate, carboxylic acid, and alcohol are reacted in the presence of at least one type of magnesium compound and at least one type of alkali metal compound.

Carboxylic acid ester production method

According to the present invention, there is provided a method for producing carboxylic acid thioester, comprising reacting a compound represented by the following formula (I), carboxylic acid and thiol in the presence of a catalyst including at least one Group 2 metal compound. The production method is a production method which is simple in reaction operation, which places a small load on the environment and the human body and which enables carboxylic acid thioester to be catalytically obtained at a high yield even at a normal temperature and a normal pressure (25&#xb0; C., 1 atm). In the formula (I), Rand Reach independently represent a hydrocarbon group having 1 to 20 carbon atoms. 

Method for producing carboxylic acid thioester

Provided is a production method whereby corresponding carboxylic acid anhydrides and carboxylic acid esters can be obtained at high yield from various carboxylic acids even without a solvent and near room temperature. A method for producing a carboxylic acid anhydride represented by formula (II), the method comprising reacting a compound represented by formula (I) and a carboxylic acid in the presence of a Group II metal compound having an ionic ligand containing an oxygen atom. A method for producing a carboxylic acid ester, the method comprising reacting a carboxylic acid anhydride produced by the aforementioned method and an alcohol. In formula (I), Rrepresents a Chydrocarbon group. In formula (II), Rrepresents a Chydrocarbon group.

Method for producing carboxylic acid anhydride and method for producing carboxylic acid ester

A method for forming a surface layer, the purpose thereof is to form a high erosion resistant film. The method for forming a surface layer includes: arranging a member () in a machining fluid (); and forming the surface layer including silicon by spacing a silicon electrode () from the member () at a predetermined distance, and by supplying silicon component from the silicon electrode () to the member side by applying a predetermined voltage and generating electric discharge, and an iron-based metal texture including silicon of 3 to 11 wt % is formed at a thickness of 5 to 10 &#x3bc;m at a portion to be treated by repetitively generating a electric discharge pulse in which a time integration value of a current value of the electric discharge pulse is in a range of 30 A&#xb7;&#x3bc;s to 80 A&#xb7;&#x3bc;s.

Erosion resistant machine component, method for forming surface layer of machine component, and method for manufacturing steam turbine

A method of manufacturing an electrode for electrical-discharge surface treatment includes increasing oxygen content in the powder; mixing the powder, in which the oxygen content is increased, with an organic binder and a solvent to prepare a liquid mixture; granulating the powder in the liquid mixture to form granulated powder; and forming the granulated powder to prepare a compact in which an oxygen concentration ranges from 4 weight % to 16 weight %.

Method of manufacturing electrode for electrical-discharge surface treatment, and electrode for electrical-discharge surface treatment

A discharge surface treatment apparatus generates a pulsed discharge between poles, that is, between a discharge electrode and a workpiece, and the discharge electrode is obtained by compression-molding of any one of a metal powder, a powder of a metal compound, and a powder of ceramics or a mixture thereof. The apparatus forms a film made of an electrode material or the like on a workpiece surface by thermal energy due to the discharge. The apparatus includes: a capacitor that is connected to any one of the discharge electrode and the workpiece at one end; and a parallel circuit of a resistor and a diode, which is provided between another one of the discharge electrode and the workpiece and another end of the capacitor via a connection line.

Discharge surface treatment apparatus

A sliding surface of a high-temperature portion is subjected to an electro-discharge surface treatment with one or both of a high-temperature hard material () and a material having a lubricating property at a high temperature (). The high-temperature hard material () is any or a mixture of cBN, TiC, TiN, TiAlN, TiB, WC, CrC, SiC, ZrC, VC, BC, SiN, ZrO, and AlO. The material having the lubricating property at the high temperature () contains chromium and/or chromium oxide (CrO) and/or hexaboron nitride (hBN). An electrode formed by compression molding of the high-temperature hard material, and the high-temperature lubricating material containing at least one of Cr and hBN and having the lubricating property at the high temperature is used as the electrode for the electro-discharge surface treatment.

Method for coating sliding surface of high-temperature member, high-temperature member and electrode for electro-discharge surface treatment

An electrical discharge surface treatment method for forming a coating film by generating a pulsed electrical discharge between an electrode and a workpiece in working fluid or gas using a green compact obtained by molding metal powder or metal alloy powder or a molded body obtained by heating the green compact as the electrode, and by melting an electrode material by an energy of the pulsed electrical discharge, forming a coating of the electrode material or a coating of a material obtained by a reaction of the electrode material by the energy of the pulsed electrical discharge on a surface of the workpiece, the electrical discharge surface treatment method includes generating the pulsed electrical discharge by mixing together two or more types of pulsed electrical discharges having different energies.

Electrical discharge surface treatment method

A microhole electric discharge machining apparatus that forms a conical inverse-tapered hole on a workpiece by a thin wire electrode, includes, an electrode holder that holds an upper part of the thin wire electrode and feeds a lower part of the thin wire electrode downward to stretch the lower part to the workpiece by rotating the thin wire electrode; a first guide member that is arranged near the workpiece upper surface and is provided with a first guide hole through which the thin wire electrode is penetrated on a hole-machining axis; a second guide member that is arranged between the first guide member and the electrode holder and is provided with a second guide hole through which the thin wire electrode is penetrated at a position eccentric from the hole-machining axis; and a swivel driving unit that circularly swivels the second guide member around the hole-machining axis.

Microhole electric discharge machining apparatus and electric discharge machining method

A discharge surface treatment apparatus supplies an electrode material to a surface of a treatment target member by generating pulsating discharges across an inter-electrode gap to form a coating of the electrode material, and includes a switching element that turns application of a voltage from a power source to the inter-electrode gap on/off, a capacitance element that is connected to the switching element in parallel with the inter-electrode gap, an inductance element that is connected in series between both of the switching element and the capacitance element and the inter-electrode gap, and a control unit that includes a function of periodically performing on/off so that an induced electromotive force generated in the inductance element due to a change in the current of discharge generated across the inter-electrode gap can be used as a voltage that induces the next discharge.

Discharge surface treatment apparatus and discharge surface treatment method

An electrode for an electrical-discharge surface-treatment method is molded with a metallic powder or a metallic compound powder having an average grain diameter of 6 micrometers to 10 micrometers. A coat on a surface of a workpiece is formed with a material constituting the electrode or a substance that is generated by a reaction of the material due to a pulse-like electrical discharge. The coat is built up with a material containing metal as a main constituent under conditions of a width of a current pulse for the pulse-like electrical discharge in a range of 50 microseconds to 500 microseconds and a peak of the current pulse equal to or less than 30 amperes.

Electrical-discharge surface-treatment method

An apparatus and a method to form a thick coat by an in-liquid pulsed electric discharge treatment, the electrode contains 40 volume % or more metallic material that is not carbonized or is hard to be carbonized.

Electrode for electric discharge surface treatment, method of electric discharge surface treatment, and apparatus for electric discharge surface treatment

An objective is to provide an electrical-discharge surface-treatment electrode by which a high-coverage zinc coating film can be formed. The electrical-discharge surface-treatment electrode is made by uniformly distributing and compression-molding zinc-based powders including at least one of a pure-metal zinc powder and a metal zinc powder whose surface is oxidized, and zinc-oxide powders whose content rate ranges from 5 to 90 volume percent with respect to the zinc-based powders, to obtain a porosity ranging from 10 to 55 volume percent; then, the zinc coating film is formed using the electrical-discharge surface-treatment electrode.

Electrical-discharge surface-treatment electrode and metal coating film formed using the same

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Tokyo, Japan

Akihiro Goto