Nkk Corporation

Nippon Furnace Kogyo Kaisha, Ltd.

Japan & Nippon Furnace Kogyo Kaisha, Ltd.

Toshikazu Akiyama

Ryoichi Tanaka

Hiroaki Sato

Toshio Ishii

Mamoru Matsuo

Shunichi Sugiyama

Masao Kawamoto

Takeshi Tada

Makoto Miyata

Akinori Hokabori

Yoshiki Fujii

Shigeo Kurioka

Radiant tube burner

The present invention relates to a steel heating furnace which permits free setting of an in-furnace temperature pattern or gradient as desired. A steel heating furnace 1 includes at least one or more burner systems of regenerative heating, each being arranged to supply a combustion air and exhaust a combustion gas through a regenerative bed. Those burner systems are disposed in each of plural zones which are defined within a single furnace body, or in each of unit furnaces 2. The unit furnaces 2 are interconnected to form a single furnace body. The amount of combustion may be controlled for each zones or each unit furnaces 2 to enable free variation of in-furnace temperature per zone or per unit furnace 2 so that a desired in-furnace temperature pattern gradient in the entire furnace 1 may be set easily. The steel heating furnace 1 may be constructed with a required length and in-furnace temperature pattern, by interconnecting the unit furnaces.

Steel heating furnace

Growing community of inventors

Tokyo, Japan

Toshikazu Akiyama