Other

Centro Sviluppo Materiali S.p.a.

Voest-alpine Industrieanlagenbau Gmbh & Co.

Centro Sperimentale Metallurgico S.p.a.

Thyssenkrupp Nirosta Gmbh

Unisor

Arcelor France

Pietro Tolve

Romeo Capotosti

Riccardo Tonelli

Gerald Hohenbichler

Aldo Ramacciotti

Eugenio Repetto

Philippe Guillo

Alberto Praitoni

Jean-Michel Damasse

Franco Macci

Alessandro Ferretti

Emanuele Picco

Renato D'Angelo

The invention relates to a side wall () of a plant for the continuous casting of metal strip () between two counter-rotating rolls (') having horizontal axes and being internally cooled, the surfaces of which define a casting space confined laterally by two side walls () made of refractory, of the type comprising:

Lateral face of an installation used for the twin-roll continuous casting of metal bands

A cooling roll having superficial dimples, for continuous casting machines with a pair of counterotating rolls in contact with the cast metal is characterized by the fact that it presents the surface that comes to contact with the cast metal provided with a first and a second dimensional order of cavities ( ) randomly spaced, and optionally, at least partially in contact between them; the strickle impressed on the roll surface ( ) of each cavity ( ) of at least one of said first and second dimensional order being of polygonal or circular shape and, more preferably rhomboidal.

Surface of a cooling roll for continuous casting machines

A method for continuously casting thin metal products, the method comprising the operations of pre-heating a pair of refractory plates ( ) for the lateral containment of a bath of molten metal constituted of a pair of counter-rotating rolls ( ) and of abutting said pair of plates ( ) towards each lateral surface of the ends of said pair of rolls ( ), characterized in that it comprises the operations of applying a controlled elastic or elastic/plastic deformation to said pair of plates ( ) at the contacting arc between the surface of the plates ( ) and the peripheral portion of the ends of said rolls ( ), and controlling said elastic and/or elastic-plastic deformation of said pair of plates ( ) during the whole casting process, so as to minimize the surface wear of the plates ( ) and of the ends of the rolls ( ), and to guarantee the maintainment of a predetermined distance between said rolls ( ) and said plates ( ) lower than a predetermined value, and to minimize the occurrence of leaks-of molten metal between said plates ( ) and said end parts of said rolls ( ).

Method for the continuous casting of thin metal products, and apparatus for carrying out the same

The present invention provides a feeder of molten metal for moulds of continuous casting machines comprising a cylindrical body ( ) within which a main outflow duct ( ) of the molten metal coming from the tundish is formed to which the cylindrical body ( ) is connected by means of a frustoconical joint ( ), formed integrally with the cylindrical body ( ) at the upper end thereof, characterized in that the free end ( ) of the cylindrical body ( ) is of substantially frustopyramid shape and has a plurality of outlets ( ) communicating with the main outflow duct ( ).

Feeder of molten metal for moulds of continuous casting machines

Rolls for strip continuous casting machines

In vertical thin-bodies continuous casting machines in which the liquid metal is cast in a mold formed by a pair of counter-rotating rolls with parallel longitudinal axes lying in the same horizontal plane and by a pair of containment plates facing onto the flat ends of the rolls, an electromagnetic device is introduced which produces a field of electromagnetic forces in a desired and given space formed between the plates and roll ends, the orientation and intensity of the forces being such as to impede leakage of liquid metal between the plates and the rolls. With this device the contact between plates and rolls is eliminated, as is the relative wear. Moreover, flat metal products are obtained that are substantially free from surface defects on the edges. Lastly, the absence of flashes on the edges due to metal infiltrating and solidifying between plates and rolls markedly decreases the possibility of jamming the machine.

Vertical thin-bodies continuous casting machines

A process of continuous casting of liquid steel from a tundish having a plurality of casting holes through which liquid steel moves downwardly into a plurality of strands. The liquid steel is discharged into the tundish from a ladle and moves in opposite directions toward two adjacent holes from at least one node comprising a point from which liquid steel moves in different directions toward different holes. The liquid steel is subjected to the heating effect of a heat source at at least one such node. The heat source is a transferred arc plasma torch.

Process for control of continuous casting conditions

A process for controlling continuous casting conditions in steel tapped from a furnace, which proceeds from a ladle into a tundish, and then via a submerged nozzle to a continuous casting mold. In either the ladle or the tundish, the liquid steel is subjected to radiation heating and convection heating from an electric heating device by which an electric current is made to pass through the liquid steel from this heating device to a return located downstream of the device, for example in the continuous casting mold. Preferably, the heating device is a transferred arc plasma torch. In addition, the nozzle between the tundish and the continuous casting mold is subjected not only to the passage of current but also to a direct magnetic field perpendicular to the steel stream.

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Rome, Italy

Pietro Tolve