Device and method for casting metal strips, especially steel, in double roller continuous casting machines
AssigneeSiemens Aktiengesellschaft
InventorsMeinolf Schelte, Franz Fikus
Life of this patent
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Abstract
A device for casting strips of metal, in particular steel, in twin-roll continuous casting machines having counter-rotating casting rolls. Liquid metal is fed into a space bound by two side walls, between the rotating casting rolls. The gaps, which are formed between the side walls. The rotating casting rolls are sealed by a sealing device for generating electrodynamic forces, that, following the gap profile, act essentially parallel to the casting-roll surface. The sealing device is constructed so as to continuously adapt the electrodynamic forces to the metallostatic pressure or approximately to the metallostatic pressure of the liquid metal.
Claims19
A device for casting strips of metal, comprising:
- counter-rotating casting rolls;
- two side walls, liquid metal being fed into a space between the casting rolls bounded by the two side walls, gaps being formed between the side walls and the casting rolls;
- and
- a sealing device sealing each of the gaps, the sealing device generating electrodynamic forces which follow a profile of the gaps and act parallel to surfaces of the casting rolls, the sealing device including a Y-shaped current-carrying inductor having two branches above a base, the inductor being arranged at an axial end of said rolls and having a spacing in the axial direction of said rolls between said axial ends and said inductor, the inductor being configured such that said spacing in the axial direction of said rolls increases from an intersection of said branches and said base, toward both top ends of said branches and toward a bottom end of said base, thereby providing electrodynamic forces on said liquid metal which are continuously adapted to metallostatic pressure of the liquid metal.
A method for casting strips of metal, comprising the steps of:
- feeding liquid metal into a space between counter-casting rolls, the space being bounded by two side walls;
- and
- sealing gaps formed between the two side walls and the rotating casting rolls using a sealing device, the sealing device including a Y-shaped current-carrying inductor having two branches and a base, the sealing including arranging the inductor at axial ends of said rolls with a spacing in the axial direction of said rolls between said axial ends and said inductor, the arranging being such that said spacing in the axial direction of said rolls increases from an intersection of said branches and said base, toward both top ends of said branches and toward a bottom end of said base;
- generating electrodynamic forces using said inductors, the electrodynamic forces acting along the gaps and parallel to surfaces of the casting rolls, and
- adapting the electrodynamic forces continuously to a metallostatic pressure of the liquid metal.
Dependencies are inferred from the claim text.