Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Takashi Choda

Yukihide Honda

Shogo Murakami

Soichiro Kojima

Shigeomi Araki

Yusuke Momota

Hitoshi Ishida

Ryutaro Wada

Tatsuhiko Kusamichi

Fumiaki Kudo

Tsuyoshi Suzuki

Yoshiki Takebayashi

This boron-containing aluminum material is obtained by carrying out the following: a mixed powder, obtained by mixing a boride powder containing first boride particles, second boride particles and particles of unavoidable impurities with an aluminum powder or aluminum alloy powder that forms a matrix, is filled into in a square aluminum pipe having a prescribed shape and then rolled by using pressure rolls the gap between which is adjusted.

Boron containing aluminum material and method for manufacturing the same

A forging die device is provided with an upper dieand a lower die. At least one die() of the upper dieand the lower diehas a die holder() which surrounds the outer periphery of the die() and holds the die(). The die holder() is configured to bear the radial tensile stress (tensile force) received by the die() during forging. By this means, the die() can be miniaturized.

Forging die device

A forging die device is configured in such a manner that die heating heater platesare disposed respectively between a diewhich is held at the outer periphery by die holders, and die holding meanscomposed of heat insulating platesand die plates, and the die holders, the die holding means and the die plates are integrated together. After the preheated dieis placed on the heated die holding means, the dieis heated by heating means, and forming surfacesof the die are heated to a required temperature immediately before forging.

Method for heating forging die device

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Kobe, Japan

Takashi Choda