Mitsubishi Heavy Industries Limited

Posco

Mitsubishi-hitachi Metals

Shigenori Shirogane

Katsunari Ohsono

Toshihiro Matsuoka

Yoshiharu Taura

Katsuhiko Tokuno

Chikayuki Matsumoto

Yoshihiko Funakoshi

Takeshi Tsunezumi

Naohiro Mizuno

Kenji Horii

Takao Funamoto

Hideaki Furumoto

Toshihiro Usugi

Sang-Wook Ha

Jong-Sub Lee

Jong-Bong Lee

Youn-Hee Kang

Chun-Soo Won

In the metal billet to be used for hot dilation forming, a forward side with respect to the pressing direction has a quadrate section and its diagonal length is not more than an inner diameter of a container. Moreover, a backward side with respect to the pressing direction has a circular section and its diameter is substantially same as the inner diameter of the container. The metal billet is heated to a temperature suitable for press working and is set into a container for press forming. While a center of a workpiece of the metal billet is being bored by a boring punch to be operated by a pressing machine, the metal billet is hot-dilated so that a bottomed container for a cask is formed.

Radioactive substance container, manufacturing apparatus thereof and manufacturing method thereof

An endless hot rolling material shear-joining method capable of threading hot rolling materials in a finish rolling process without strip breakage by controlling joining conditions for the hot rolling materials in an endless hot rolling process for high carbon steel, and an endless hot rolling plant therefor are disclosed. The shear-joining method for endless hot rolling materials of high carbon steel includes shear-joining high carbon steel metal bars comprising, in terms of weight %, 0.30% to 1.20% C, inevitable impurities, and balance Fe, or comprising 0.15% to 1.5% C containing at least one of Cr, Ni, Mo, V, Ti, W, B, Nb, and Sb, inevitable impurities, and balance Fe, such that a joined surface of the joined metal bars is formed to be inclined in a thickness direction of the metal bars, in a hot rolling plant by a joiner adapted to join the metal bars after overlapping tail part of a leading one of the metal bar and top part of a trailing metal bar.

Joining method of high carbon steel for endless hot rolling and the apparatus therefor

Radioactive substance containment vessel, and radioactive substance containment vessel producing device and producing method

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Hiroshima, Japan

Shigenori Shirogane