Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Compressor Corporation

Mitsubishi Aircraft Corporation

Primetals Technologies Japan, Ltd.

Hoden Seimitsu Kako Kenkyusho Co., Ltd.

Japan Kanigen Co. Ltd.

Mitsubishi Heavy Industires, Ltd

Toyoaki Yasui

Yuya Konno

Katsuyasu Hananaka

Kazuo Murakami

Kyoichi Ikeno

Yoshikazu Yamada

Yukio Kodama

Masaki Kawano

Yujiro Watanabe

Kosei Kawahara

Yuzo Tsurusaki

Yasuhiro Sakaguchi

Toshiro Kobayashi

Yoshihiro Wada

Yozo Nakamura

Satoshi Hata

Takuya Hirata

Akihiro Nakaniwa

Masashi Yoshikawa

Hideaki Sakurai

Toshiya Watanabe

Ichiro Nagano

Yasuharu Suda

Katsunari Ohsono

Kazunari Tanaka

Katsunori Akiyama

Naoki Hirata

Toshirou Kobayashi

Osamu Isumi

Hiroshi Kawamoto

Masanobu Misaki

Kosei Tsuji

Ryusuke Nakatsuka

Toyoshi Ohto

Yukiharu Suzuki

Kenichi Nemoto

Akinori Tasaki

Akihiko Morikawa

Kunihiro Kuroi

Kazuyoshi Miyagawa

Yusuke Ishibashi

Shugo Iwasaki

Takahiro Yagi

Chiaki Yasuda

Toshio Nishina

Yohei Fuchigami

Masakatsu Fujita

Kazumi Ogura

Hideaki Takatani

Yoichi Sano

Hisanori Kishimoto

Yoshihiro Kiyota

Kenji Itagaki

Kazuhide Saito

Tomone Kishida

Taiji Kikuchi

Takashi Maehara

Eizaburo Tanaka

Pham Khanhson

An acid solution preparation device is an acid solution preparation device for preparing an acid solution used for pickling of a steel plate, the device including a sealed tank for storing the acid solution, a gas supply part for supplying an oxygen-containing gas from outside of the sealed tank to the sealed tank, and a purge part for discharging a gas in the sealed tank to the outside.

Acid solution preparation device, acid solution supply apparatus, and pickling facility

An impeller manufacturing method includes: integrally forming an impeller by an additive manufacturing method using a metal powder, the impeller including a disk which has a disk shape about an axis, a plurality of blades which are formed on a surface facing a first side in an axial direction of the disk with gaps therebetween in a circumferential direction about the axis, and a cover which covers the plurality of blades from the first side in the axial direction; processing the integrally formed impeller by a hot isostatic pressing; and causing a polishing fluid containing abrasive grains to flow through a flow path formed between the disk, the cover, and the blades in the impeller after the processing with the hot isostatic pressing and while pressurizing the polishing fluid to perform fluid polishing.

Impeller manufacturing method and impeller flow path elongation jig

The purpose of the present invention is to provide a method for producing a pipe material and to provide a mandrel with which resistance between a member to be processed and the mandrel during bending processing can be reduced and overall processing time can be shortened. The method for producing a pipe material includes: a step for inserting a mandrel, which is provided on the inside thereof with a flow path through which dry ice powder flows and spray holes at the tip thereof for spraying the dry ice powder, inside pipe material; a step for spraying the dry ice powder from the spray holes inside the pipe material; and a step for performing bending processing on the pipe material wherein the mandrel has been inserted.

Method for producing pipe material

A multilayer structure includes: a base material made of an iron-based metal material; a nitride layer that is provided on a surface of the base material through a nitriding treatment performed to the base material; an intermediate layer provided on a surface of the nitride layer; and a DLC layer provided on a surface of the intermediate layer. The intermediate layer is made of SiN, and the DLC layer has a thickness of 2 &#x3bc;m to 10 &#x3bc;m.

Multilayer structure and machine component having multilayer structure

Provided is a mandrel which is inserted into a pipe material when the pipe material is bent, the mandrel including: a core member having a rod-shaped main body portion and a small-diameter portion which is provided on one end side of the main body portion and which is thinner than the main body portion; and a front end member which is provided on one end side of the core member and which is formed integrally with the core member so as to cover the small-diameter portion.

Mandrel

Provided is a method of manufacturing a rotary machine, which includes: a casing forming process of forming a casing of the rotary machine that has multiple opening parts and suctions and discharges a fluid; a surface activating process of supplying a pretreatment liquid into the casing, then discharging the pretreatment liquid from the casing through the opening parts, and activating an inner surface of the casing after the casing forming process; a plating process of performing supply and discharge of a plating liquid into and from the easing through the opening parts to circulate the plating liquid and plating the inner surface of the casing after the surface activating process; and an assembling process of providing a rotating body that is rotatable relative to the casing so as to he covered from an outer circumference side by the casing plated in the plating process.

Method of manufacturing rotary machine, method of plating rotary machine, and rotary machine

A hub is supported rotatably about an axis of rotation, and the diameter thereof increases from upstream to downstream sides along a fluid flow. A plurality of impeller blades extend radially outward from an outer circumferential surface of the hub. A shroud is formed in a cylindrical shape whose diameter increases from the upstream to downstream sides along the fluid flow and joins outer circumferential ends of the plurality of impeller blades. The impeller blades are composed of upstream blade segments and downstream blade segments bonded at a bonding surface extending in a direction substantially perpendicular to the axis of rotation. The upstream blade segments are integral with at least a portion of the shroud, and the downstream blade segments are integral with at least a portion of the hub. This improves the reliability and performance of an impeller and a compressor.

Impeller, compressor, and method for producing impeller

A method for manufacturing an impeller of a centrifugal rotating machine that is approximately disk-shaped and in which flow passages are formed between a plurality of blades and disposed in a radial manner from the inner circumferential side to the outer circumferential side, provided with a first flow passage formation step that forms a first region on the outer circumferential side within the flow passage by inserting an electrode of a shape fitting to the flow passage with the electric discharge machining method from the outer circumferential side of the disk-shaped body having an outer shape of an impeller, and a second flow passage formation step that forms a second region on the inner circumferential side within the flow passage from the inner circumferential side of the disk-shaped body.

Method of manufacturing by electric discharge machining an impeller for centrifugal rotating machine

A component for a rotary machine which is configured such that a hard film composed of ceramics and an anti-fouling film composed of a fluorine-containing diamond-like carbon film are laminated on the surface of a base material, and which has superior drain erosion resistance and fouling resistance in an environment where a gas comes in direct contact therewith.

Component for rotary machine

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

In a part for a rotary machine, a ceramic hard film is formed on a surface of a base material, the density of droplets which exist in a surface of the ceramic hard film is set to be within 1000 pieces/mm, and the density of droplets whose mean particle diameter is 1 &#x3bc;m or less is set to be within 550 pieces/mm. A method for manufacturing the part of a rotary machine is a method for forming the ceramic hard film by at least an ion plating method or a sputtering method.

Part for rotary machine, and manufacturing method therefor

A solid particle erosion resistant surface treated coating has a solid particle erosion resistance that is largely enhanced and a rotating member having the coating gains oxidation resistance without deteriorating a fatigue strength. Also, a rotating machine can have this coating applied thereto. The solid particle erosion resistant surface treated coating has a nitrided hard layer formed on a surface of a base material and a PVD (physical vapor deposition) hard layer of at least one layer formed on the nitrided hard layer by a PVD method. Deformation of the base material by collisions by solid particles is prevented and cracking of the coating is prevented. Thereby, the solid particle erosion resistance is secured, life of the solid particle erosion resistant surface treated coating can be increased and oxidation resistance and fatigue strength are enhanced.

Solid particle erosion resistant surface treated coating and rotating machine applied therewith

The present invention provides parts of a rotation machine which effectively prevent particulates, such as silica, iron oxide, and other particles, contained in a gas to adhere to the rotating machines which work with the gases containing the particulates. An intermediated metal-plated film and a plated film containing fluorocarbon polymer particles provided on the intermediate metal-plated film are deposited on the surfaces of moving blades used in a steam turbine. The plated film containing the fluorocarbon polymer particles includes fluorocarbon polymer particles made of any of Ni-based metals and a plated matrix, and some of the fluorocarbon polymer particles are exposed at the surfaces of the plated matrix.

Rotating machine and parts of the same

A high wear resistant hard film is characterized by including a coating layer consisting of a metal nitride, which is formed on the outside surface of an object to be treated; a substrate layer consisting of a nitride of Ti or Cr, which is provided between the coating layer and the object to be treated; and an intermediate layer containing compositions of the coating layer in contact with the intermediate layer and the substrate layer, which is provided at an interface between the coating layer and the substrate layer, and a tool is provided with the film. There is provided a hard film having excellent oxidation resistance even 1000&#xb0; C. or higher and also having very high wear resistance.

High wear resistant hard film

A coating layer is provided on a surface of the moving blades of a rotary machine. The coating layer includes a spray layer on the base material of the moving blades and a fluorocarbon resin layer on the spray layer. The spray layer is porous. The fluorocarbon resin layer is made of fluorocarbon resin. The fluorocarbon resin layer also contains an inorganic substance that is exposed on the surface of the fluorocarbon resin layer.

Component for rotary machine and rotary machine

Growing community of inventors

Hiroshima, Japan

Toyoaki Yasui