Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Keisuke Kamitani

Ken Ishii

Naoki Ogawa

Hiroharu Oyama

Jiro Kasahara

Shuho Tsubota

Yasuyuki Fujiya

Takumi Matsumura

Kohei Hatano

Hidetaka Haraguchi

Takahiro Ota

Motonari Machida

Kazuhiko Kamo

Kazunori Kuga

Yukihiro Sakaguchi

Hiroaki Kyuno

Takafumi Aoyama

This support member for additive manufacturing is a support to be disposed below a manufactured portion of a particular overhanging portion of the three-dimensional object which needs the support in the process of additively manufacturing the three-dimensional object. The support member is provided with: the support main body; and a polishing channel which is formed in the support main body so as not to be exposed to an interface with the three-dimensional object, and through which a polisher for polishing and removing the support main body is allowed to pass.

Support member for additive manufacturing, production method and production device for three-dimensional object by additive manufacturing, manufactured object model creation device, control device, and manufacturing method for manufactured object

A laser welding method of the present invention is a laser welding method for irradiating with a laser beam a groove portionformed along a circumferential direction by butting axial end portions of cylindrical bodiestogether to weld the groove portion, the method comprising: a welding process Sof irradiating the groove portionwith the laser beam over the entire circumference to weld the groove portion; and a strain correction process Sof irradiating the groove portionwith the laser beam over the entire circumference, the laser beam having a heat input amount smaller than a heat input amount per unit area of the laser beam emitted in the welding process S

Laser welding method, laser welding apparatus, and cylindrical body

A method for manufacturing a turbine rotor blade wherein warping, bending and twisting of the entire rotor blade, which is provided with an excess thickness portion after a forging step, can be suppressed. In the forging step in a process for manufacturing a rotor blade (), the forging is hot-forged such that the distance (the excess thickness amount) from the blade surface of the blade section () to the surface of the excess thickness section is substantially uniform along the entire periphery of a cross section of the blade section () and the excess thickness section () perpendicular to the blade length direction, and such that the amount of the excess thickness in the blade length direction, which is the thickness of the excess thickness section (), gradually increases toward the blade tip from a prescribed position.

Method for manufacturing turbine rotor blade

A pipe diameter expansion apparatus includes: a hollow cylindrical member that can be placed in a pipe filled with water, and through which a coolant medium having a lower temperature than a freezing point of the water flows from one end to the other end; at least two plate-like fins provided to protrude outward from the cylindrical member; and a cold-heat insulator that is provided between the two fins, and reduces cold-heat transmission between inside and outside the cylindrical member.

Pipe diameter expansion apparatus and pipe diameter expansion method

Growing community of inventors

Tokyo, Japan

Keisuke Kamitani