Abstract: The invention addresses the problem of edge bulging and breakout of as cast strip due to a decrease of perfect solid phase shell thickness of the strip caused by heat recuperation of the unsolidified portion of the strip, by providing a chamber 19 which encloses the travel path of a strip 8 delivered from a pair of chilled rolls 1a and 1b, a pair of chilled blocks 29a arranged in the chamber to be positioned near a nip between the chilled rolls 1a and 1b, with each chilled block 29a being shaped for loose fitting over an edge of a strip 8 and being capable of injecting cooling gas toward the edge of the strip 8. When the strip 8 is to be continuously cast, the interior of the chamber 19 provides an inert gas atmosphere, in which the cooling gas injected by the cooling blocks 29a injection-cools the edges of the strip 8 delivered from the chilled rolls 1a and 1b at a position near the nip between the chilled rolls 1a and 1b.

Abstract: To suppress wear of side surfaces of end closures due to rotation of cooling rolls in a twin roll strip caster, a pair of housings 11 are provided, each arranged to face on end faces of one or the other ends of cooling rolls 1a and 1b, which are arranged substantially horizontally and in parallel with each other, so that it may be displaced toward and away from the end faces, rolling members 12 rotatably supported by each of said housings 11 so that they may contact the corresponding end faces of the rolls 1a and 1b, a thruster body 21 supported on each of the housings 11 so that it may be displaced toward and away from the corresponding end faces of the rolls 1a and 1b, and an end closure 3 loaded on each of the thruster bodies 21 so that it may closely contact upper portions of the end faces of the rolls 1a and 1b. When the end closure 3 is worn to a predetermined extent, then the rolling members 12 contact the end faces of the rolls 1a and 1b to thereby suppress wear of the end closure 3.

Abstract: To suppress generation of scales on surfaces of a strip and to reduce the amount of non-oxidizing gas consumed in the casting of strip in a twin roll caster there is provided downstream apparatus comprising pinch rolls 17a and 17b for pinching a strip 4 continuously cast by a pair of casting rolls 1a and 1b, a coiler 8 for coiling the strip 4 delivered from the pinch rolls 17a and 17b, an upstream chamber 19 for enclosing a travelling path of the strip 4 from the casting rolls 1a and 1b to the pinch rolls 17a and 17b,a downstream chamber 24 for enclosing a travelling path of the strip 4 from the pinch rolls 17a and 17b to a position before the coiler, a shutter on an end of the downstream chamber closer to the coiler and a gas supply source for supplying non-oxidizing and reducing gases to the upstream and downstream chambers 19 and 24 and quenching means within the downstream chamber to cool the strip so that it leaves the chamber at a temperature of 300.degree. C. or below.

Abstract: To suppress wear of side surfaces of end closures due to rotation of cooling rolls in a twin roll strip caster, a pair of housings 11 are provided, each arranged to face on end faces of one or the other ends of cooling rolls 1a and 1b, which are arranged substantially horizontally and in parallel with each other, so that it may be displaced toward and away from the end faces, rolling members 12 rotatably supported by each of said housings 11 so that they may contact the corresponding end faces of the rolls 1a and 1b, a thruster body 21 supported on each of the housings 11 so that it may be displaced toward and away from the corresponding end faces of the rolls 1a and 1b, and an end closure 3 loaded on each of the thruster bodies 21 so that it may closely contact upper portions of the end faces of the rolls 1a and 1b. When the end closure 3 is worn to a predetermined extent, then the rolling members 12 contact the end faces of the rolls 1a and 1b to thereby suppress wear of the end closure 3.

Abstract: To suppress generation of scales on surfaces of a strip and to reduce the amount of non-oxidising gas consumed in the casting of strip in a twin roll caster there is provided downstream apparatus comprising pinch rolls 17a and 17b for pinching a strip 4 continuously cast by a pair of casting rolls 1a and 1b, a coiler 8 for coiling the strip 4 delivered from the pinch rolls 17a and 17b, an upstream chamber 19 for enclosing a travelling path of the strip 4 from the casting rolls 1a and 1b to the pinch rolls 17a and 17b, a downstream chamber 24 for enclosing a travelling path of the strip 4 from the pinch rolls 17a and 17b to a position before the coiler, a shutter on an end of the downstream chamber closer to the coiler and a gas supply source for supplying non-oxidising and reducing gases to the upstream and downstream chambers 19 and 24 and quenching means within the downstream chamber to cool the strip so that it leaves the chamber at a temperature of 300.degree. C. or below.

Abstract: Position sensors at an inlet of a mold cavity defined by upper and lower block molds detect distances from the passing upper and lower block molds. In response to outputs from the position sensors, any deflection of the leading end of the tundish nozzle, which can be inclined with respect to the melt outlet of a tundish, toward the upper or lower block molds defining the mold cavity is detected by a control device to generate a drive signal which is delivered to a hydraulic cylinder adapted to incline the tundish nozzle by extending or retracting the rod thereof, whereby the gaps between the leading end of the tundish nozzle and the upper and lower block molds are maintained uniform.

Abstract: A side dam block disposed along the widthwise end portion of a block mold is supported by springs such that the side dam block is pressed against the casting flat surface of the opposing block mold so that gap between the opposing block molds can be suitably adjusted.

Abstract: A dummy nozzle is used for alignment of a pouring nozzle upon insertion of the pouring nozzle in communication with a tundish into a mold cavity of an endless track type moving-block mold continuous casting machine.

Abstract: Downward force resulting from the block mold and its carrier of the upper mold assembly which move downwardly toward the upstream end of the mold cavity defined by the vertically spaced-apart upper and lower mold assemblies is transmitted to the block mold and its carrier of the upper mold assembly passing the upward path extending upwardly from the downstream end of the mold cavity so that the distortions of the cross-sectional configuration and size of the mold cavity due to the weight of the block molds and their carriers are prevented.

Abstract: In a mold cavity and/or in horizontal cooling zones, upstream- and downstream-side gears are drivingly coupled to each other through an endless-track-like member to which the tensile force is exerted by a tensioner, so that gaps between the adjacent block molds can be eliminated and therefore intrusion and leakage of a cooling liquid and melt are prevented.

Abstract: A tundish nozzle is independent from a tundish so that thermal deformations of the tundish are not transmitted to the tundish nozzle.

Abstract: In a mold apparatus for an endless track type continuous casting machine of the type in which a plurality of cooling blocks are interconnected with each other in the form of an endless chain to assemble a cooling block chain which can define a straight wall; a pair of said cooling block chains are disposed such that the straight wall thereof define a mold; and the cooling block chains are moved in synchronism with the casting speed or rate, a plurality of cooling holes are extended through each cooling block in the direction perpendicular to the direction of the movement thereof and in parallel with the straight wall section thereof; one or more cooling water pipes are disposed along one side surface of said straight wall section of each cooling block chain and are provided with a plurality of nozzles in line with the cooling holes of the cooling blocks so that the cooling water is injected through the nozzles to their corresponding cooling holes of the cooling blocks which are moving, thereby cooling the coo

Abstract: In a block type moving mold continuous casting machine of the type wherein a pair of block molds group each consisting of a plurality of block molds interconnected with each other in the form of an endless track are disposed in opposed relationship to define a mold cavity therebetween; and molten metal is supplied from one open end of the mold cavity and a solidified casting is continuously withdrawn out of the other open end of said mold cavity, a method and installation capable of removing a block mold which has been thermally deformed during the casting process from a carrier in a simple manner and quickly replacing with a new or repaired block mold.