Provided is a casting sliding gate including a plurality of plates, and at least a portion of the plates includes carbon fibers and carbide and is capable of suppressing damage due to a thermal shock.

A sliding nozzle device that can reduce any damage such as surface roughness and chipping in a nozzle hole surroundings of a used plate. The sliding nozzle device includes a fixed metal frame, a sliding metal frame, and an opening and closing metal frame that holds the sliding metal frame in a slidable manner, and in the sliding nozzle device in which sliding contact surfaces of the sliding members provided on the sliding metal frame and the opening and closing metal frame come in slidable contact with each other, the sliding contact surfaces of the sliding member of the sliding metal frame are provided away from each other by a predetermined length front and rear in the sliding direction and a part between the front and rear sliding contact surfaces serves as a depressed part, and the sliding contact surfaces of the sliding member of the opening and closing metal frame are provided away from each other by a predetermined length front and rear in the sliding direction and a part between the front and rear sliding contact surfaces serves as a depressed part.

A sliding nozzle device that can reduce any damage such as surface roughness and chipping in a nozzle hole surroundings of a used plate. The sliding nozzle device includes a fixed metal frame, a sliding metal frame, and an opening and closing metal frame that holds the sliding metal frame in a slidable manner, and in the sliding nozzle device in which sliding contact surfaces of the sliding members provided on the sliding metal frame and the opening and closing metal frame come in slidable contact with each other, the sliding contact surfaces of the sliding member of the sliding metal frame are provided away from each other by a predetermined length front and rear in the sliding direction and a part between the front and rear sliding contact surfaces serves as a depressed part, and the sliding contact surfaces of the sliding member of the opening and closing metal frame are provided away from each other by a predetermined length front and rear in the sliding direction and a part between the front and rear sliding contact surfaces serves as a depressed part.

In a sliding nozzle comprising three plates consisting of an upper plate, an intermediate plate capable of a sliding movement, and a lower plate, it is intended to suppress adhesion and deposition of metal oxides and others on wall surfaces of inner bores of the three plates. The intermediate plate has: a first inclined portion whose surface defines a slidingly closing directional leading-side wall surface of an inner bore thereof and extends obliquely downwardly in a diametrically contracting direction; a second inclined portion whose surface defines an upper part of a slidingly closing directional trailing-side wall surface of the inner bore thereof and extends obliquely downwardly in a diametrically contracting direction, and a third inclined portion whose surface defines a lower part of the slidingly closing directional trailing-side wall surface of the inner bore thereof and extends obliquely downwardly in a diametrically expanding direction.

In a sliding nozzle comprising three plates consisting of an upper plate, an intermediate plate capable of a sliding movement, and a lower plate, it is intended to suppress adhesion and deposition of metal oxides and others on wall surfaces of inner bores of the three plates. The intermediate plate has: a first inclined portion whose surface defines a slidingly closing directional leading-side wall surface of an inner bore thereof and extends obliquely downwardly in a diametrically contracting direction; a second inclined portion whose surface defines an upper part of a slidingly closing directional trailing-side wall surface of the inner bore thereof and extends obliquely downwardly in a diametrically contracting direction, and a third inclined portion whose surface defines a lower part of the slidingly closing directional trailing-side wall surface of the inner bore thereof and extends obliquely downwardly in a diametrically expanding direction.

Casting plates constructed for facing the casting orifice of a metallurgical vessel are provided with a metallic casing. The casting plates and metallic casing are provided with a protrusion configured to interact with a detector. The casing has a main surface with an opening, and two substantially longitudinal bearing surfaces. The protrusion extends from the casing in a direction substantially parallel to the longitudinal bearing surfaces. The protrusion is formed by a ramp having an inclined portion.

Casting plates constructed for facing the casting orifice of a metallurgical vessel are provided with a metallic casing. The casting plates and metallic casing are provided with a protrusion configured to interact with a detector. The casing has a main surface with an opening, and two substantially longitudinal bearing surfaces. The protrusion extends from the casing in a direction substantially parallel to the longitudinal bearing surfaces. The protrusion is formed by a ramp having an inclined portion.

The invention relates to a sliding closure for a metallurgical vessel, comprising at least two fireproof closure plates (3, 4, 5) that can be pressed against each other and can each be clamped in a plate frame (7, 8, 9) by means of clamping jaws (10, 11, 12) that can be actuated by means of an eccentric unit (15). In order to actuate the clamping jaws (10, 11, 12), the eccentric units (15) are each provided with a rotary part (151), which has an upper and lower eccentric (28 and 29) and a centering pin (30), which is supported in the plate frame (7, 8, 9), wherein the one eccentric (28) acts on the clamping jaw (10, 11, or 12). Advantageously, the upper eccentric (29) interacts with a part (34) of the plate frame (7, 8, 9) in such a way that the upper eccentric is pressed against said part (34) in a clamping direction in the outer region (36) of the upper eccentric when the clamping jaw (10, 11, 12) is released. Thus, a plate exchange can be performed safely.

The invention relates to a sliding closure for a metallurgical vessel, comprising at least two fireproof closure plates (3, 4, 5) that can be pressed against each other and can each be clamped in a plate frame (7, 8, 9) by means of clamping jaws (10, 11, 12) that can be actuated by means of an eccentric unit (15). In order to actuate the clamping jaws (10, 11, 12), the eccentric units (15) are each provided with a rotary part (151), which has an upper and lower eccentric (28 and 29) and a centering pin (30), which is supported in the plate frame (7, 8, 9), wherein the one eccentric (28) acts on the clamping jaw (10, 11, or 12). Advantageously, the upper eccentric (29) interacts with a part (34) of the plate frame (7, 8, 9) in such a way that the upper eccentric is pressed against said part (34) in a clamping direction in the outer region (36) of the upper eccentric when the clamping jaw (10, 11, 12) is released. Thus, a plate exchange can be performed safely.

Slide closure for a vessel containing molten metal includes a slide housing and a slide unit that can be displaced longitudinally towards the slide housing, at least one refractory closure plate can respectively be inserted into the slide housing. The closure plates can be pressed against one another by the slide unit being braced against the slide housing. The closure plates can respectively be fixed or centered therein by a placement device having a displaceable positioning element. These placement devices are respectively designed such that upon bracing the slide unit against the slide housing, placing of the positioning element and clamping or centering of the respective closure plate is brought about therein. Therefore, despite easier operation, increased operating reliability is guaranteed because the closure plates are clamped and centered mechanically.