Nippon Steel Corporation

Chugai Ro. Kogyo Co., Ltd.

Akihiro Nakama

Takashi Haji

Tetsuya Tokitsu

Akira Matsufuji

Saburo Harada

Yasuyuki Nakamoto

Jiro Yamasaki

Youshun Yamamoto

Shoji Nakamura

An improved ceiling beam construction for a heating furnace in which ceiling beams having closed cross sections are adopted for utilizing the interior of the beams as ducts for passing gases through them so as to reduce spaces required for installing separate gas ducts, with a consequent decrease in the number of duct supporting fittings or fixtures.

Ceiling beam construction for heating furnace

An apparatus for cooling hot steel plate and sheet has a plurality of cooling units disposed along the plate or sheet delivery line. Each cooling unit has a top and a bottom roll-and-nozzle assembly and a device for coupling them. The top and bottom assemblies each have a roll to restrain the plate or sheet and a nozzle to spray a coolant thereon. The coupling device has a screwdown mechanism to adjust the space between the top and bottom rolls and a device for adjusting the restraining force working on the plate or sheet being cooled. This cooling apparatus permits rapid cooling of steel plate and sheet without causing distortion thereof, and the apparatus is easy to maintain.

Apparatus for cooling hot steel plate and sheet

Growing community of inventors

Oita, Japan

Akihiro Nakama