Mitsubishi Heavy Industries Limited

Mitsubishi Power, Ltd.

Mitsubishi Hitachi Power Systems, Ltd.

Shuji Tanigawa

Masahiko Mega

Taiji Torigoe

Yoshifumi Okajima

Masashi Kitamura

Ryuichi Narita

Ryuta Ito

Hidetaka Haraguchi

Daisuke Kudo

Taro Tokutake

Koichiro Iida

Toshiya Watanabe

Akio Kondou

Yoshinori Wakita

Claus Thomy

Masamitsu Kuwabara

Yasuyuki Fujiya

Naotoshi Okaya

Koji Tsukimoto

Hiroki Komuro

Henry Koehler

Hiroyuki Kimura

Eisaku Ito

Hiroyuki Mitsui

Junichiro Masada

Keizo Tsukagoshi

Yoshitaka Uemura

Norihiko Motoyama

Masaya Hatanaka

Shuho Tsubota

Kosuke Fujiwara

Masaki Taneike

Takayuki Kurimura

Mineaki Matsumoto

Takahiro Tachibana

Yasuhiko Tsuru

Hidekatsu Atsumi

Yoshifumi Tsuji

Shigenari Horie

Hiroshi Makigano

Masayuki Ota

Takahisa Hasegawa

Nobuhiko Saito

Thomas Seefeld

Michael Kalms

Dieter Tyralla

A method of manufacturing an additively manufactured object includes: checking, for an additively manufactured object including a plurality of internal passages, the presence or absence of a deposit in each inner wall surface of the plurality of internal passages; and selectively removing the deposit from the internal passage in which the deposit has been detected in the checking, among the plurality of internal passages.

Method of manufacturing additively manufactured object

A thermal barrier coating includes a bond coat layer deposited on a substrate, and a ceramic layer deposited on the bond coat layer. The ceramic layer includes a first layer having a porosity of 10% or more and 15% or less, and a second layer having a porosity of 0.5% or more and 9.0% or less and deposited on the first layer.

Thermal barrier coating, turbine member, gas turbine, and method for producing thermal barrier coating

A high-temperature component according to an embodiment is a high-temperature component which requires to be cooled by a cooling medium, and includes: a plurality of cooling passages through which the cooling medium is able to flow; and a first partition wall disposed inside each of the cooling passages to partition the cooling passage into a plurality of first branch flow passages. The first partition wall includes an oblique portion formed such that, in an upstream side region of the first partition wall, a flow-passage cross-sectional area of the cooling passage as seen in an extension direction of the cooling passage gradually decreases from an upstream side toward a downstream side.

High-temperature component and method of producing the high-temperature component

A high-temperature component according to an embodiment is a high-temperature component which requires cooling by a cooling medium, and includes: a plurality of cooling passages through which the cooling medium is able to flow; a header portion to which downstream ends of the plurality of first cooling passages are connected; and at least one outlet passage for discharging the cooling medium flowing into the header portion to outside of the header portion. A roughness of an inner wall surface of the at least one outlet passage is not greater than a roughness of an inner wall surface of the plurality of first cooling passages in a region where a flow-passage cross-sectional area of the outlet passage is the smallest.

A high-temperature component including a plurality of cooling passages through which the cooling medium can flow, a header connected to respective downstream ends of the plurality of cooling passages, and one or more outlet passages for discharging the cooling medium flowing into the header to outside of the header. The one or more outlet passages are less in number than the plurality of cooling passages. Respective minimum flow passage cross-sectional areas of the one or more outlet passages are not less than respective flow passage cross-sectional areas of the plurality of cooling passages in a connection between the header and the cooling passages. A sum of the respective minimum flow passage cross-sectional areas of the one or more outlet passages is less than a sum of the respective flow passage cross-sectional areas of the plurality of cooling passages in the connection between the header and the cooling passages.

High-temperature component, production method for high-temperature component, and flow rate control method

An internal defect detection system for a three-dimensional additive manufacturing device which performs additive molding by emitting a laser beam to a powder bed is provided. This system specifies a candidate position of an internal defect on the basis of a change amount of a local temperature measured in an irradiated part of a powder bed irradiated by a laser beam. The system calculates a cooling speed at the candidate position on the basis of a temperature distribution and determines whether an internal defect exists on the basis of the cooling speed.

Internal defect detection system, three-dimensional additive manufacturing device, internal defect detection method, method of manufacturing three-dimensional additive manufactured product, and three-dimensional

An additive manufacturing method includes: forming a powder bed by supplying a raw material powder; and irradiating the raw material powder that forms the powder bed with a light beam having an intensity distribution of a second or higher order mode or of a top hat shape.

Additive manufacturing method and additive manufacturing apparatus

A heat treatment method for an additive manufactured object formed of a laminate-molded Ni-base alloy includes: a heat treatment step for carbide precipitation optimization of heating the additive manufactured object for 1 hour or longer and 100 hours or shorter at a temperature which is equal to or higher than a temperature T1 determined by Formula (1) according to amounts of component elements and is equal to or lower than 1,350&#xb0; C.; and an aging treatment step of heating the additive manufactured object for 1 to 30 hours at a temperature of 800&#xb0; C. to 950&#xb0; C. after the heat treatment step for carbide precipitation optimization.T1 (&#xb0; C.)=177&#xd7;Ni (%)+176&#xd7;Co (%)+172&#xd7;Cr (%)+178&#xd7;Mo (%)+174&#xd7;W (%)+171&#xd7;Al (%)+170&#xd7;Ti (%)+168&#xd7;Ta (%)+163&#xd7;Nb (%)+307&#xd7;C (%)&#x2212;16259&#x2003;&#x2003;(1)

Heat treatment method for additive manufactured Ni-base alloy object, method for manufacturing additive manufactured Ni-base alloy object, Ni-base alloy powder for additive manufactured object, and additive manufactured Ni-base alloy object

A method of manufacturing a fabricated object includes forming the fabricated object by laminating metal powder, the fabricated object including an opening portion that communicates with a hollow internal space, mounting a plug in the opening portion, and welding the plug mounted in the opening portion to the fabricated object.

Method of manufacturing fabricated object

Provided are a coating structure, a turbine part having the same, and a method for manufacturing the coating structure. The coating structure is provided on a surface of a base portion including a ceramic matrix composite. The coating structure is layered on the surface of the base portion, and includes a bond coat layer formed of a rare-earth silicate and a top coat layer layered on the bond coat layer. The residual stress present in the bond coat layer is compressive residual stress. The oxygen permeability coefficient of the bond coat layer is no greater than 10kg&#xb7;m&#xb7;sat a temperature of not lower than 1200&#xb0; C. and a higher oxygen partial pressure of not less than 0.02 MPa. The bond coat layer may contain carbonitride particles or carbonitride whiskers.

Coating structure, turbine part having same, and method for manufacturing coating structure

A method of manufacturing a turbine blade includes forming a blade body divided body constituting a blade body of the turbine blade by a three-dimensional lamination method; individually forming a plurality of shroud divided bodies constituting a shroud of the turbine blade for each of the shroud divided bodies by a three-dimensional lamination method; joining the shroud divided bodies together; and joining the blade body divided body and the shroud divided bodies.

Manufacturing method for turbine blade, and turbine blade

A three-dimensional additive manufacturing device is configured to emit a beam to a powder bed formed by laying a powder on a base plate to harden the powder bed selectively. A sensor is configured to detect the shape or the temperature of a surface of the powder bed or a modeling surface. A defect in laying of the powder or a defect in emission of the beam is corrected based on the detection result, before completion of forming of the next layer.

Three-dimensional additive manufacturing device, three-dimensional additive manufacturing method, and three-dimensional additive manufactured product

A process abnormality detection system for a three-dimensional additive manufacturing device which performs additive modeling by emitting a beam to a powder bed determines that a laying abnormality of the powder bed is occurring if at least one of a first condition that an average height of the powder bed from a reference position is out of a first predetermined range or a second condition that a height variation of the powder bed is out of a second predetermined range is satisfied, on the basis of a detection result of a shape measurement sensor.

Process abnormality detection system for three-dimensional additive manufacturing device, three-dimensional additive manufacturing device, process abnormality detection method for three-dimensional additive manufacturing device, method for manufacturing three-dimensional additive manufactured product, and three-dimensional additive manufactured product

A method of forming a sprayed coating includes preparing a spray target member having a surface on which openings of first ends of holes are formed, preparing a plurality of masking pins each of which comprises metal, and inserting each of the masking pins into a corresponding one of the holes so that each of the masking pins partially protrudes from the surface. The method also includes applying an adhesive agent for fixing the masking pins to the respective holes, to at least one of the holes or the masking pins, forming a ceramic layer by spraying on the surface of the spraying target member, the ceramic layer comprising a ceramic material, while the masking pins are fixed to the respective holes via the adhesive agent, and removing the masking pins from the holes after the spraying step.

Method of forming sprayed coating, high-temperature component for turbine, turbine, masking pin for forming sprayed coating, and masking member

A unidirectionally solidified article repair method according to one embodiment includes a step of forming a groove part overlapping only on one of a plurality of crystal grain boundaries in a base material made of a unidirectionally solidified alloy in which the plurality of crystal grain boundaries are aligned in one direction, and a step of forming a welded part having a metal composition similar to that of the base material by a metal used in welding with the base material in the groove part.

Unidirectionally solidified article, turbine rotor blade and unidirectionally solidified article repair method

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Tokyo, Japan

Shuji Tanigawa