Tokyo Yogyo Kabushiki Kaisha

Jfe Engineering Corporation

Nippon Rotary Nozzle Co., Ltd.

Jfe Refractories Corporation

Jfe Mechanical Co., Ltd.

Hisao Inubushi

Tsuneo Kondo

Tsuyoshi Mizuno

Tomohiro Yotabun

Tomohiro Yotabunn

Ryuzo Nishimachi

Hideto Takasugi

A poured molten metal quantity control device includes a fixed plate brick having at least one pouring port, a collector nozzle brick, a slide plate brick sandwiched therebetween, an outer race mounted so as to be turned on the outer peripheral side of the fixed plate brick by an extendable unit, and a frame having the slide plate brick mounted thereon that is mounted on the outer race through a pivotal hinge so as to be capable of opening and closing movements. The frame can be opened and closed through the pivotal hinge independently of the turning of the outer race with the extendable unit.

Poured molten metal quantity control device

In a rotary nozzle brick body formed into a substantially egg-like shape in it's plan view, the present invention secures a contact area of a nozzle portion and improves a configuration factor which considerably affecting the durability of the body. A rotary nozzle brick body is characterized in that the external shape in plan view is comprised of first circular portions (G), second circular portions (H), third circular portions (K), and tangent lines connecting the first circular portions and third circular portions so that a substantially elliptical shape is formed by increasing the circular portion and shortening the tangent lines, instead of a substantially egg-like shape having long tangent lines. Since the substantially elliptical shape is formed by reducing the linear portion of the brick body in it's plan view while the shape is expanded circularly, the contact area is maintained even if the sliding plate brick is rotated up to it's full-opened state, thereby eliminating a fear that molten steel or the like may leak.

Brick body for rotary nozzle

Growing community of inventors

Tokyo, Japan

Hisao Inubushi