Krosaki Corporation

Toshimitsu Taira

Teruo Aoki

Hisao Hanada

Masao Ohnuma

Takahiro Yasuda

Tetsuro Kuhara

A surface pressure loading and releasing mechanism in a sliding nozzle device for a molten metal vessel is used to reduce the hot manual work involved in loading and releasing surface pressure on plates and to carry out loading and releasing of the surface pressure by a simple operation. In a sliding nozzle device for applying and releasing surface pressure between plate bricks by moving an opening/closing metal frame having elastic force loading and a sliding metal frame disposed between a fixed metal frame and the opening/closing metal frame, a surface pressure block is removably disposed between brackets for mounting the opening/closing metal frame on the fixed metal frame. Surface pressure loading and releasing is carried out by moving the opening/closing metal frame, by causing a projecting portion of the sliding metal frame to project into the opening/closing metal frame, and by having a molten steel passage hole in the sliding metal frame passing therethrough abut with the opening/closing metal frame.

Sliding nozzle device and surface pressure loading and releasing method

A sliding nozzle plate-metal frame fixing structure which allows the sliding nozzle plate to be mounted to and removed from the metal frame with ease. The sliding nozzle plate which is used with a sliding nozzle device attached to a molten metal vessel has a sliding surface, and is surrounded by a metal case with the exception of the sliding surface. The metal case has a projection or a plurality of projections of a particular shape on the surface of the plate opposite the sliding surface, and a metal frame in which the metal-cased plate to be mounted has a plurality of concave portions corresponding to the projection or projections of the metal case, so that the metal-cased plate can be mounted to and removed from the metal frame simply and accurately through engagement and disengagement of each of the metal case projection or projections with each of the metal frame concave portions.

Growing community of inventors

Fukuoka, Japan

Toshimitsu Taira