Abstract:
The invention relates to a method for casting and rolling preliminary sections, especially H-sections, and a device for the support, guidance and deformation of a metal strand, especially a steel cast strand (1), in a continuous casting installation for preliminary sections with soft reduction (9). Roll carriers (8) are arranged below the continuous casting mould opposite each other on each side of the cast strand (1a, 1b), the rolls of said carriers being in transport and/or deformation connection with said cast strand (1). The aim of the invention is to avoid segregation and porosity. To this end, the preliminary section is precast in the continuous casting mould with a bulge (6a) on the flanges (7) and on the surface (6b) of the web of said preliminary section, and the bulges (6a) of the flange (7) and the web of the preliminary section (6) are rolled flat in the soft reduction area (9) in such a way that the outer surfaces of the flange (7a) and the web surfaces of the preliminary section (6b) are largely plane.
Abstract:
The invention relates to a method and device for continuously casting metals (1), especially steel, in a cooled oscillating continuous casting mold (4), in which the crater is subjected to a treatment by an electromagnetic stirring coil (9), whereby the magnetic field is placed in close proximity to the cast strand (8) underneath the continuous casting mold (4). The aim of the invention is to adjust the effects of the stirring coil not only outside but also during the casting process. To this end, the invention provides that with a stationary stirring coil (9), which follows the continuous casting mold (4) in a direction of movement (14) of the strand, a continuous relative change in position of the magnetic field of the stirring coil (9) is effected in the direction of the casting vein by adjusting the oscillation area of the continuous casting mold (4) according to the casting parameters.
Abstract:
The invention relates to a device for continuously casting metals, especially steel, comprising a base frame (2) carrying a continuous casting mould (1), an oscillating device (3) which is arranged on the base frame (2), and a base roll stand (4) which is arranged on the base end (1a) of the continuous casting mould (1). The aim of the invention is to improve the protection of the mould region and of the elements arranged downstream therefrom. To this end, the continuous casting mould (1), an oscillating frame (3b) and an oscillating drive (3a) applied to the oscillating frame (3b) are arranged in a housing (5) which closes towards the top and at the sides, and the base roll stand (4) fixed on the continuous casting mould (1) penetrates a laterally protecting lower housing (6).
Abstract:
Process for changing the format thickness of a cast billet (9) of a continuous casting plant in a casting operation comprises sequentially closing, in the casting direction, segments that follow in series at their linking joint (5-7) and segmentally extending the segments at their linking joints. AN Independent claim is also included for a device for carrying out the above process, which comprises an adjusting apparatus (11-14) equipped with devices to regulate the position and force.
Abstract:
The secondary cooling and the strand support are matched to the cooling state of a continuously cast strand cross section. The secondary cooling and support are reduced in dependence upon the solidification profile of the cast strand along the distance traveled.
Abstract:
Dispositivo de colada continua de metales, especialmente de acero, que comprende una coquilla (1) de colada continua con una sección transversal de colada perfilada, un bastidor (3) oscilante en el que está colocada la coquilla (1) de colada continua; un accionamiento (6, 9) hidráulico con un cilindro (9a) de accionamiento para crear un movimiento de oscilación según un procedimiento de oscilación-resonancia para el bastidor (3) oscilante con la coquilla (1) de colada continua, pudiendo ajustarse la carrera del movimiento oscilante y / o su frecuencia, y conjuntos (4a, 4b; 5a, 5b) de resortes de lámina dispuestos simétricamente a ambos lados del ramal de colada y en los que se soporta el bastidor (3) oscilante para el guiado y la compensación de peso, caracterizado por un dispositivo de medición para determinar las presiones en el cilindro (9a) de accionamiento con las que puede calcularse la magnitud de la fuerza de rozamiento entre la barra de colada y o la coquilla de colada continua.
Abstract:
A device for continuous casting and direct deformation of a metal strand, with a strand guide which is curved after the continuous casting mold in the direction of strand travel, a spray device for liquid coolant, a bending-straightening unit, and an automatic control system for a uniform temperature field in the strand cross section. The cast strand is cooled with a liquid coolant only in the longitudinal sections in which the cast strand is liquid in the cross section. The curved strand guide with the spray device for liquid coolant is followed by a dry zone, which operates without liquid coolant and serves as insulation against the elimination of radiant heat and systematically surrounds the cast strand. A reduction line is provided, which includes individual, hydraulically adjustable deforming rolls or several hydraulically adjustable roll segments and precedes, coincides with, or follows the region of the bending-straightening unit.
Abstract:
A method for casting and rolling preliminary sections, especially H-sections, and a device for the support, guidance and deformation of a metal strand, especially a steel cast strand ( 1 ), in a continuous casting installation for preliminary sections with soft reduction ( 9 ), wherein roll carriers ( 2 ) are arranged below the continuous casting mold opposite each other on each side of the cast strand ( 1 a, 1 b), the rolls of said carriers being in transport and/or deformation connection with said cast strand, and wherein to avoid segregation and porosity, the preliminary section is precast in the continuous casting mould with a bulge ( 6 a) on the flanges ( 7 ) on the surface ( 6 b) of the web of said preliminary section, and the bulges ( 6 a) of the flange ( 7 ) and the web of the preliminary section ( 6 ) are rolled flat in the soft reduction area ( 9 ) in such a way that the outer surfaces of the flange ( 7 a) and the web surfaces of the preliminary section ( 6 b) are largely plane.