Abstract: In a twin-roll continuous caster configured to cast molten steel supplied to a molten metal pool between cooling rolls into a cast piece by, for example, cooling and solidifying the molten steel on the surfaces of the cooling rolls, the pair of cooling rolls each have ridges on the surface thereof, and cast-piece edges and a cast-piece central portion are generated. Specifically, the cast-piece edges are generated by pressing and bonding lateral edges of one of solidified shells to lateral edges of the other solidified shells, the lateral edges of the solidified shells being produced by cooling and solidifying the molten metal on surfaces of collars provided at lateral end portions of the cooling rolls. The cast-piece central portion contains the unsolidified molten steel between the solidified shells and is generated by cooling and solidifying the molten steel on the surfaces of the laterally central portions of the cooling rolls.

Abstract: A twin-roll continuous casting machine includes: a moving mechanism for moving, relative to one roll, another roll; a plurality of upper side support rolls for supporting the one-roll side of a cast slab separated from the one roll and withdrawn; and a plurality of lower side support rolls for supporting the other-roll side of the cast slab pulled out from the clearance between both rolls. The upper side support rolls are rotatably supported by first bearers, while the lower side support rolls are rotatably supported by second bearers having a force for urging the lower side support rolls toward the cast slab. The cast slab is transported, with an upper surface portion of the cast slab pulled out from the clearance between both rolls serving as a reference surface.

Abstract: In a twin-roll continuous caster configured to cast molten steel supplied to a molten metal pool between cooling rolls into a cast piece by, for example, cooling and solidifying the molten steel on the surfaces of the cooling rolls, the pair of cooling rolls each have ridges on the surface thereof, and cast-piece edges and a cast-piece central portion are generated. Specifically, the cast-piece edges are generated by pressing and bonding lateral edges of one of solidified shells to lateral edges of the other solidified shells, the lateral edges of the solidified shells being produced by cooling and solidifying the molten metal on surfaces of collars provided at lateral end portions of the cooling rolls. The cast-piece central portion contains the unsolidified molten steel between the solidified shells and is generated by cooling and solidifying the molten steel on the surfaces of the laterally central portions of the cooling rolls.

Abstract: A twin-roll continuous casting machine comprises: a moving mechanism for moving, relative to one roll, another roll; a plurality of upper side support rolls for supporting the one-roll side of a cast slab separated from the one roll and withdrawn; and a plurality of lower side support rolls for supporting the other-roll side of the cast slab pulled out from the clearance between both rolls. The upper side support rolls are rotatably supported by first bearers, while the lower side support rolls are rotatably supported by second bearers having a force for urging the lower side support rolls toward the cast slab. The cast slab is transported, with an upper surface portion of the cast slab pulled out from the clearance between both rolls serving as a reference surface.

Abstract: A continuous casting apparatus having a pair of drums rotating in opposite directions, and bearing housings for rotatably supporting drum shafts protruding from opposite end surfaces of the drums, the continuous casting apparatus comprising, on a side of at least one of the drums: a base portion; an arm having an end portion on which the bearing housing is installed fixedly, and having an opposite end portion pivotably supported by the base portion; and an adjusting device for pivoting the arm to move the pair of drums toward or away from each other.

Abstract: When a molten steel (106) is supplied into a moving mold defined by concave rolls (101, 102) and side checks (103, 104), the molten steel (106) is cooled by the surfaces of the rolls (surfaces except steps) to form solidified shells (111, 112). Both solidified shells (111, 112) are pressure bonded, and pulled out as a cast piece (113). A heat insulator (ceramic coating) has been applied to the circumferential surfaces of steps (101a, 101b, 102a, 102b) which are opposite end portions of the rolls. Thus, at these portions, heat dissipation does not proceed, and no solidified shells are formed. Hence, clearances are formed between the opposite ends of the solidified shells (111, 112) and the side checks (103, 104), and the solidified shells (111, 112) do not contact the side checks (103, 104), with the result that the wear of the side checks (103, 104) is prevented.