Rheo-technology Ltd.

Kawasaki Steel Corporation

Akihiko Nanba

Kazutoshi Hironaka

Tetsuya Fujii

Tsutomu Nozaki

Masazumi Hirai

Yasuo Fujikawa

Takaharu Moriya

Chisato Yoshida

Mitsuo Saito

Manabu Kiuchi

Motoyasu Yaji

Seiji Watanabe

Yasuyuki Murata

Ryuji Yamaguchi

Mitsuo Uchimura

Yusuke Morita

Kazuhiro Ozawa

Naotsugu Yoshida

Mineo Muraki

Masato Noda

Ujihiro Nishiike

Tsuyoshi Nakamoto

Hiroyshi Takahashi

Tsukasa Shinde

Method of producing thin cast sheet through continuous casting

A semi-solidified metal composition having an excellent workability is continuously produced by pouring molten metal into an upper part of a cooling agitation mold, agitating it while cooling to produce a slurry of solid-liquid mixed phase containing non-dendritic primary solid particles dispersed therein and discharging out the slurry from a lower part of the cooling agitation mold. In this case, a ratio of shear strain rate at a solid-liquid interface to solidification rate of molten metal is adjusted to a value exceeding 8000 in the cooling agitation mold.

Process for the production of semi-solidified metal composition

Dispersion strengthened metal matrix composites are produced by stirring a mixed solid-liquid phase slurry as a dispersing medium under a reduced pressure, adding a dispersion strengthening material to the dispersing medium, and continuing the stirring under the reduced pressure till the dispersion strengthening material is uniformly dispersed in the dispersing medium.

Method for the production of dispersion strengthened metal matrix

In a process and an apparatus for stably and continuously producing a solid-liquid metal mixture in which non-dendritic primary solid particles are dispersed into the remaining liquid matrix, molten metal is charged into a clearance between a wall member and a rotating agitator composed of a cylindrical drum having a horizontally rotational axis.

Process and apparatus for the production of semi-solidified metal

Spray coating is performed utilizing a mixture of refractory material and a combustionable metal powder. The size of the particle of the metal in the mixture is selected so that the particle size is large enough to be treated safely and is small enough to be transported by means of a gas flow. As a carrier gas for carrying the mixture, a non-combustionable gas or fuel gas is used. A fuel gas and a combustion-assisting gas are discharged toward the section to be treated on the surface for directing a combustioning frame. The refractor material with the carrier gas is discharged into the frame established by the fuel gas and the combustion-assisting gas. The average size of the metal particle to be used in the spray coating is limited to be greater than 50 .mu.m. By enlarging the particle size of the metal, combustion of the metal particle becomes difficult. Combustion of such large particle size metal can be assisted by discharging the combustion-assisting gas together with the fuel gas. This compensates combustion efficiency to be dropped by utilizing the larger particle size metal.

Method and apparatus for spray coating of refractory material to

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Chiba, Japan

Akihiko Nanba