Mitsubishi Heavy Industries Limited

Yosuke Mukai

Kazuhisa Tamura

Tetsuhei Kobayashi

Tomofumi Shintani

Takashi Fujii

Keita Takamura

Susumu Wakazono

Takumi Suzuki

Shin Asano

Hiroyuki Otomo

Hiroshi Kawasaki

Masayoshi Hatta

Takaaki Oda

Hiroyuki Kishihara

To provide a turbine blade, a manufacturing method for a turbine blade, and a gas turbine. In the turbine blade including a cooling passage provided along a blade height direction, the cooling passage includes: a first cooling hole including one end opening toward a front end, and having an inner diameter that is constant along the blade height direction; and a second cooling hole including one end communicating with the other end of the first cooling hole without a level difference, and having an inner diameter that is increased toward a base end. A length from the one end of the first cooling hole to a position where the first cooling hole and the second cooling hole are communicated with is 40% to 60% of a length from the one end of the first cooling hole to a gas path surface on the base end.

Turbine blade, manufacturing method for turbine blade, and gas turbine

In order to easily form curved holes and straight holes of desired shapes, an electrochemical machining tool of the present invention comprises a tool body including: an electrode made from an electrically conductive material in a cylindrical shape extending along an axial line and having flexibility, an electrolytic solution flowing through an internal flow channel of the electrode toward a tip side; and an insulating layer coated on an outer circumferential face of the electrode so as to expose the tip of the electrode. A fluid outflow hole is formed in the tool body, passing through the tool body in a radial direction and guiding the electrolytic solution flowing through the flow channel outward in the radial direction, and the electrochemical machining tool further comprises a tube-shaped member selectively opening and closing the fluid outflow hole.

Electrochemical machining tool and electrochemical machining system

Provided is an electrochemical machining apparatus, which includes an electrode () that form of a shape which a tube shape is extended, including a flexible conductive material, and is which an electrolyte (W) circulates from a base end side () thereof toward a distal end side () thereof, a current supply unit () that causes electric current to flow with respect to the electrode () in an extending direction (direction running the Y direction) in which the electrode () extends, and a magnetic field generation unit () that includes at least one pair of magnets () which are disposed to face the electrodes () a direction and apply a magnetic field in a direction (X direction) intersecting the extending direction with respect to the electrodes ().

Electrochemical machining apparatus

An electrochemical machining tool () includes a tool body () which has an electrode () which is made of a flexible conductive material having a cylindrical shape extending along an axis (O), and inside which an electrolyte (W) flows toward a leading end () side, and an insulating layer () coated on an outer circumferential surface of the electrode () to expose a leading end surface of the electrode (), wherein a non-insulation section () which exposes the outer circumferential surface of the electrode () is formed on the tool body (), and the non-insulation section () is surrounded by the insulating layer () from an axial (O) direction.

Electrochemical machining tool, electrochemical machining system, and method for manufacturing perforated member

The present invention is an electrochemical machining tool equipped with a tool body that comprises: an electrode that extends along an axial line and inside which a flow channel through which an electrolytic solution flows towards the tip end is formed; an insulating layer covering the outer circumferential surface of the electrode so as to expose the tip end face of the electrode; and a flow channel-partitioning part for partitioning the flow channel into a first flow channel containing the axial line and a second flow channel positioned on the outer circumferential side of the first flow channel. The electrochemical machining tool has a configuration in which a fluid outflow section for directing electrolytic solution, which is flowing through the second flow channel, outward in the radial direction of the tool body is formed on a portion of the circumference of the tool body.

Electrochemical machining tool, electrochemical machining system, and perforated member manufacturing method

An electrochemical machining tool includes a tool main body which includes an electrode having a tubular shape extending along an axis and formed of a conductive material having flexibility, the electrode through which an electrolyte flows toward a distal end side, and an insulating layer coated on an outer circumferential surface of the electrode so as to expose a distal end surface of the electrode. In the electrochemical machining tool, a hole part serving as a fluid discharge part configured to discharge the electrolyte flowing through inside of the electrode toward the outside in the radial direction of the tool main body is formed at a portion of a position in the circumferential direction of the tool main body.

Growing community of inventors

Tokyo, Japan

Yosuke Mukai