Mazda Motor Corporation

Hiroshima University

Keylex Corporation

Y-Tec Corporation

Ichirou Ino

Naoyuki Irie

Chie Okawa

Yoshihide Hirao

Keizo Kawasaki

Kenichi Hatakeyama

Gen Sasaki

Kazuhiro Matsugi

Yasushi Tamura

Tsuyoshi Itaoka

Yongbum Choi

Hajime Suetsugu

Hideki Manabe

Shinsaku Seno

Takeshi Matsuda

Zhefeng Xu

Kenji Nakamura

Kenjiro Sugio

Yuri Takahashi

Kyotaro Yamane

Hiroki Kondo

Takuya Takahashi

Hitoshi Sawada

Yujiao Ke

Provided is a method of producing a composite having high strength and high thermal conductivity. The method includes: an alloy preparation step including preparing an alloy which is a solid solution containing α-Fe as a solvent and at least one type of α-phase stabilizing element as a solute; a first mixing step including mixing at least one type of α-phase stabilizing element in powder form and SiC to prepare a first mixture; a second mixing step including mixing the alloy and the first mixture to prepare a second mixture; and a sintering step including sintering the second mixture.

Method for manufacturing αFe—SiC composite material, and αFe—SiC composite material

A hot press processing deviceincludes steps of: a heating step of heating a workpiece W; a press step of press-molding the workpiece W heated in the heating step; a cooling step of cooling a part of the workpiece W press-molded in the press step and causing it to undergo martensite transformation to form a hard zone Zh in the workpiece W, and cooling another part of the workpiece W and causing it to undergo ferrite/bainite transformation to form a soft zone Zs in the workpiece W. In the cooling step, the hot press processing devicecools a predetermined portion Zb in the soft zone Zs after increasing rigidity and hardness of the predetermined portion Zb.

Hot press processing method and processing device

Provided is a Fe-based sintered body which has both of a high hardness and a high thermal conductivity and which can be more stably produced. The Fe-based sintered body includes: a matrix () containing Fe as a main component; and a hard phase () dispersed in the matrix (). The matrix () is formed in a network shape and contains αFe. The hard phase () contains TiC.

Fe-based sintered body, Fe-based sintered body production method, and hot-pressing die

A hot press processing apparatusincludes: a heating step of heating a workpiece W; a pressing step of press-molding, by an upper dieand a lower die, the workpiece W heated in the heating step after loading the workpiece W between the upper dieand the lower die; and a cooling step of bringing the coolant into contact with a front surface of the workpiece W that is molded and placed in a pressed state by the pressing step, to thereby cool the workpiece W and place the workpiece W in a quenched state. In the hot press processing apparatus, the workpiece W molded and placed in the pressed state by the pressing step forms gaps cwith respect to both of the upper dieand the lower dieso as to allow deformation at time of the cooling step except for an accuracy-guaranteed section Wr in the workpiece W.

Hot press processing method and hot press processing apparatus

A lower mold includes: refrigerant ejection ports in its press-molding surface; refrigerant guide grooves in the press-molding surface to guide a refrigerant ejected from the refrigerant ejection ports to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece; a single connecting groove connected to the refrigerant guide grooves and formed at the outer portion of the press-molding surface into which the refrigerant flows through the refrigerant guide grooves; and discharge ports in the connecting groove. Each of the refrigerant discharge ports is formed at a part of the connecting groove apart from the connecting points between the connecting groove and the refrigerant guide grooves.

Hot press machine

A lower mold includes: refrigerant ejection ports in its press-molding surface; and three or more independent refrigerant guide grooves extending in the press-molding surface from the refrigerant ejection ports to guide the refrigerant ejected from the refrigerant ejection port to an outer portion of the press-molding surface with the refrigerant being in contact with a workpiece. Each of the refrigerant guide grooves neither branches halfway nor merges with the others of the refrigerant guide grooves to extend from the refrigerant ejection ports to the outer portion of the press-molding surface.

Growing community of inventors

Hiroshima, Japan

Ichirou Ino