A roller for a metallurgical plant is provided. The roller is modified in such a way that the camber thereof can be set in a simple and robust manner. The roller axle is connected to the roller shell at one point, preferably at at least two points, via a ring, and the ring has a heating element, wherein the height H of the ring can be changed by ΔH as a result of the heating of the heating element.

A primary object of the present invention is to provide a continuous-cast slab where central porosity is reduced by surly crushing the slab, and a method and apparatus of manufacturing the same.

The continuous-cast slab 1 having horizontally symmetrical granular equiaxed crystals at least in the center in the thickness direction includes a first reduction dent 2 and a second reduction dent 3 that further dents from the bottom surface of the first reduction dent 2 and is narrower than the first reduction dent 2 at least on one long side surface. Such a configuration can makes it possible to achieve the continuous-cast slab 1 of no more than 2.5×10.sup.−4 cm.sup.3/g in a maximum porosity volume while segregation is reduced.

A strand guide segment for a continuous casting plant, which strand guide segment has an upper frame, a lower frame and position-controlled hydraulic cylinder units for setting the distance between the upper frame and the lower frame and, as a result, a strand thickness of a strand to be guided by the strand guide segment. A first end of each hydraulic cylinder unit is mounted on the upper frame. At the second end of the hydraulic cylinder units, facing away from the upper frame, each hydraulic cylinder unit is detachably connected by a respective flange connection to a respective tie rod which, at its end facing away from the flange connection, is mounted on the lower frame.

A strand guide segment for a continuous casting plant, which strand guide segment has an upper frame, a lower frame and position-controlled hydraulic cylinder units for setting the distance between the upper frame and the lower frame and, as a result, a strand thickness of a strand to be guided by the strand guide segment. A first end of each hydraulic cylinder unit is mounted on the upper frame. At the second end of the hydraulic cylinder units, facing away from the upper frame, each hydraulic cylinder unit is detachably connected by a respective flange connection to a respective tie rod which, at its end facing away from the flange connection, is mounted on the lower frame.

A continuous casting method for steel in which a slab at a position where the center solid phase rate of the slab is 0.8 or more and including after complete solidification is reduced by a reduction roll. The roll outer peripheral shape in a cross-section including a roll rotation axis convex shape overhanging outward in a region including a width-direction center position of the slab. The convex shape is a shape that does not have corner portions in a convex shape defining range with a total length of 0.80×W on both sides in the roll width direction from the width-direction center position. A reduction roll radius at the width-direction center position is greater by 0.005×t or more than a reduction roll radius at both ends of the convex shape defining range.

A continuous casting method for steel in which a slab at a position where the center solid phase rate of the slab is 0.8 or more and including after complete solidification is reduced by a reduction roll. The roll outer peripheral shape in a cross-section including a roll rotation axis convex shape overhanging outward in a region including a width-direction center position of the slab. The convex shape is a shape that does not have corner portions in a convex shape defining range with a total length of 0.80×W on both sides in the roll width direction from the width-direction center position. A reduction roll radius at the width-direction center position is greater by 0.005×t or more than a reduction roll radius at both ends of the convex shape defining range.

A bearing box for a rotating roll that delivers a high-temperature substance. The bearing box includes a bearing portion and a seal portion provided adjacent to the bearing portion and includes a first cooling liquid passage that is formed on the outer peripheral side of the bearing portion and through which a cooling liquid passes, and a second cooling liquid passage that is formed on the radially inner side relative to the first cooling liquid passage and on the outer peripheral side of the seal portion, the second cooling liquid passage communicating with the first cooling liquid passage to cause the cooling liquid to pass therethrough.

A bearing box for a rotating roll that delivers a high-temperature substance. The bearing box includes a bearing portion and a seal portion provided adjacent to the bearing portion and includes a first cooling liquid passage that is formed on the outer peripheral side of the bearing portion and through which a cooling liquid passes, and a second cooling liquid passage that is formed on the radially inner side relative to the first cooling liquid passage and on the outer peripheral side of the seal portion, the second cooling liquid passage communicating with the first cooling liquid passage to cause the cooling liquid to pass therethrough.

A bearing box for a rotating roller for supporting or transporting a high-temperature object. The bearing box includes a bearing and seal units disposed therein. A cooling jacket is disposed at an outer periphery of the bearing box so that the cooling jacket covers at least a portion of an axial region of the bearing and at least a portion of an axial region of the seal unit. The cooling jacket has a cooling water inlet and a cooling water outlet, and the bearing box is cooled by cooling water supplied to the cooling jacket through the cooling water inlet.

A casting and outputting system is provided. The system includes a casting machine, a disc body, a transfer device, a special fixture, a cooling tank, a collection device and a waste plate rack. The transfer device is configured to drive the special fixture to take out anode plates cast on the disc body, place a qualified one of the anode plates in the cooling tank, place an unqualified one of the anode plates on the waste plate rack, lift the anode plate cooled in the cooling tank, and place the cooled anode plate on the collection device for stacking.