Plate condition tool for the measurement of condition data of slide gate valve plates coupled to the slide gate valve of a metallurgic vessel, said slide gate valve comprising a collector nozzle, said plate condition tool comprising: a) a main body comprising an obturator for obturating at least partially the collector nozzle; b) a gas injecting device comprising a pressure regulator for injecting a gas in the collector nozzle through the obturator; c) a gas flow measuring device for measuring the flow of the gas injected by the gas injecting device d) a controller being communicatively connected to the gas flow measuring device and being configured to receive input data relating to the relative position of the slide gate valve plates; and wherein the obturator comprises a seal holder for holding a collector nozzle seal.

A plate, a plate-holding apparatus, and a holding method for the plate for facilitating work to attach the plate to a plate-receiving metal frame of a sliding nozzle device. A gap is ensured between a to-be-held portion of the plate and an inner wall surface of an engagement groove such that, when the plate is held by engaging the to-be-held portion of the plate with the engagement groove of a holding portion of the plate-holding apparatus, the plate is movable in the longitudinal direction, the width direction, and the thickness direction of the plate.

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 gate for metallurgic vessels is provided with a collector nozzle coupled to a bottom plate assembly of the gate. The bottom plate assembly allows a collector nozzle to be coupled to a bottom gate plate without need of a separate bayonet ring. A bayonet ring is integrated to the bottom plate assembly, allowing a collector nozzle to be mounted by a single robot, or by a single operator more easily than existing systems.

A gate for metallurgic vessels is provided with a collector nozzle coupled to a bottom plate assembly of the gate. The bottom plate assembly allows a collector nozzle to be coupled to a bottom gate plate without need of a separate bayonet ring. A bayonet ring is integrated to the bottom plate assembly, allowing a collector nozzle to be mounted by a single robot, or by a single operator more easily than existing systems.

A plate, a plate-holding apparatus, and a holding method for the plate for facilitating work to attach the plate to a plate-receiving metal frame of a sliding nozzle device. A gap is ensured between a to-be-held portion of the plate and an inner wall surface of an engagement groove such that, when the plate is held by engaging the to-be-held portion of the plate with the engagement groove of a holding portion of the plate-holding apparatus, the plate is movable in the longitudinal direction, the width direction, and the thickness direction of the plate.

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.

A refractory sliding gate valve plate has a planar upper surface and a planar lower surface parallel to the planar upper surface. A connecting outer surface connects the upper surface to the lower surface, and a pouring channel fluidly connects the upper surface to the lower surface. Specified ratios of length between (a) specified longitudinal segments extending from the axis of symmetry of the pouring channel to the perimeter on the upper surface and the lower surface of the plate, respectively, and also between (b) specified latitudinal segments extending from the axis of symmetry of the pouring channel to the perimeter on the upper surface and the lower surface of the plate, respectively, increase the uniformity of thrust force applied to the plates and the contact area between the upper surfaces of two such plates within a valve.

In a closure plate for a slide closure on the spout of a container containing molten metal, two outer longitudinal sides, a flow-through opening disposed on a central longitudinal axis of the closure plate and a closing surface passing from the latter are provided. There are formed on each of these two outer longitudinal sides, at least two shoulder surfaces serving as clamping surfaces or as centring surfaces of the closure plate which are at an angle to the longitudinal axis and tapering inward. At least on the shoulder surfaces on the side of the closing surface, adjoining outer sides are provided which are respectively at a smaller angle to the longitudinal axis than those of the shoulder surfaces.

In a closure plate for a slide closure on the spout of a container containing molten metal, two outer longitudinal sides, a flow-through opening disposed on a central longitudinal axis of the closure plate and a closing surface passing from the latter are provided. There are formed on each of these two outer longitudinal sides, at least two shoulder surfaces serving as clamping surfaces or as centring surfaces of the closure plate which are at an angle to the longitudinal axis and tapering inward. At least on the shoulder surfaces on the side of the closing surface, adjoining outer sides are provided which are respectively at a smaller angle to the longitudinal axis than those of the shoulder surfaces.