Mitsubishi Heavy Industries Aero Engines, Ltd.

Osaka Yakin Kogyo Co., Ltd.

Shuntaro Terauchi

Kenji Suzuki

Tadayuki Hanada

Hisashi Kitagaki

Kazuki Hanami

Kentaro Shindo

Satoru Yamazaki

Kenji Doi

A method for metal powder injection molding includes injecting a first metal powder of a TiAl-based intermetallic compound into a mold, and molding the first metal powder through use of an injection molding machine; injecting a second metal powder of a TiAl-based intermetallic compound having a same constituent as the first metal powder and having a different average particle diameter from the first metal powder into a mold, and molding the second metal powder through use of the injection molding machine; and sintering molded articles obtained by molding the first metal powder and the second metal powder, and producing a mixed sintered compact in which a first sintered compact of the molded article obtained by molding the first metal powder and a second sintered compact of the molded article obtained by molding the second metal powder are integrated.

Method for metal powder injection molding

A method is for producing a TiAl-based intermetallic sintered compact. The method includes mixing Ti powder, Al powder, and a binder to yield a mixture; molding the mixture into a molded product having a predetermined shape with a metal injection molder; placing the molded product in a preliminary sintering die having a storage space inside; performing sintering at a predetermined preliminary sintering temperature to produce a preliminary sintered compact; releasing the preliminary sintered compact from the preliminary sintering die; and performing sintering at a sintering temperature higher than the preliminary sintering temperature to form the TiAl-based intermetallic sintered compact.

Method for producing TiAl-based intermetallic sintered compact

A gas atomization nozzle includes a through-hole formed along a center line; a nozzle portion configured of a Laval nozzle which is disposed around the center line and provided to be inclined at a predetermined angle toward the center line; and swirling motion imparting means for imparting a swirling flow around the center line to gas which is injected from the nozzle portion. The nozzle portion is formed in a ring shape which is continuous around the center line, and the swirling motion imparting means is configured as a fin provided in the nozzle portion to impart a swirling flow.

Gas atomization nozzle and gas atomization device

Growing community of inventors

Osaka, Japan

Shuntaro Terauchi