METHOD AND STRAND GUIDE FOR SUPPORTING, GUIDING AND COOLING CASTING STRANDS MADE OF STEEL, ESPECIALLY PRELIMINARY SECTIONS FOR GIRDERS

    公开(公告)号:CA2419069C

    公开(公告)日:2009-01-20

    申请号:CA2419069

    申请日:2001-08-07

    Applicant: SMS DEMAG AG

    Abstract: A method and strand guide for supporting, guiding and cooling casting strands (1) made of steel, especially preliminary sections (2) for girders, which are cooled by injected water (29) and are drawn, serve to prevent cracks, especially surface cracks, from appearing in the microstructure by adapting the cooling conditions of the surface of the strand in the region of the seconda ry cooling, and serve to prevent undercooling of the strand shell, wherein in order to avoid an undesirable solidification structure on the upper flange edges o r in other cross-sectional areas, the cooling and support of the beam blank forma t are so adapted to the solidification range that cooling and support are provided exclusively where a crater is formed. To this end, the casting strand (1) is cooled, by guiding the temperature in a specific manner in upper supporting segments (5, 6, 7), by means of spray-water jets the width of which at least matches the length of the supporting rollers on longitudinal and transversal sides (13, 14) of the cross section (la) of the casting strand, and is decreasingly supported in an analogous manner with respect to the length of the casting path and the cooling state in core areas (15) of the cross section (la) of the casting strand on the transversal sides (14) of said casting strand cross-section (1 a) so that cooling occurs exclusively by means of water jets (8) which are oriente d towards said core areas (15).

    METHOD AND STRAND GUIDE FOR SUPPORTING, GUIDING AND COOLING CASTING STRANDS MADE OF STEEL, ESPECIALLY PRELIMINARY SECTIONS FOR GIRDERS

    公开(公告)号:CA2419069A1

    公开(公告)日:2003-02-05

    申请号:CA2419069

    申请日:2001-08-07

    Applicant: SMS DEMAG AG

    Abstract: A method and strand guide for supporting, guiding and cooling casting strand s (1) made of steel, especially preliminary sections (2) for girders, which ar e cooled by injected water (29) and are drawn. The inventive method prevents cracks, especially surface cracks, from appearing in the microstructure by adapting the cooling conditions of the surface of the strand during secondar y cooling. Undercooling of the chill of the strand is prevented by adapting th e cooling and support of the beam blank format to the solidification range in order to avoid an undesirable solidification structure on the upper flange edges or in other cross-sectional areas so that cooling and support are provided exclusively where a crater is formed. The casting strand (1) is cooled by guiding the temperature in a specific manner in upper supporting segments (5, 6, 7) by means of injected water jets whose width at least matches the length of the supporting rollers on longitudinal and transversal sides (13, 14) of the cross section (1a) of the casting strand, and is decreasingly supported in an analogous manner with respect to the length of the casting path and the cooling state in core areas (15) of the cross secti on (1a) of the casting strand on the transversal sides (14) of said casting strand cross section (1a) andcooling occurs exclusively by means of water jets (8) which are oriented towards said core areas (15).

    DISPOSITIVO DE COLADA CONTINUA DE METALES, ESPECIALMENTE ACERO.

    公开(公告)号:ES2269384T3

    公开(公告)日:2007-04-01

    申请号:ES01927941

    申请日:2001-05-05

    Applicant: SMS DEMAG AG

    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.

    7.
    发明专利
    未知

    公开(公告)号:BR0107146A

    公开(公告)日:2002-07-23

    申请号:BR0107146

    申请日:2001-05-05

    Applicant: SMS DEMAG AG

    Abstract: The invention relates to a device for the continuous casting of metals, especially steel, by means of a continuous casting mold ( 1 ) which is mounted in an oscillating frame ( 3 ). Said oscillating frame can be driven so that it oscillates in the direction of casting ( 2 ), the course of the oscillation movement and/or the frequency being adjustable. The oscillating frame ( 3 ) is mounted with spring assemblies ( 4 a , 4 b ; 5 a , 5 b) arranged symmetrically on both sides of the strand, for guiding and weight compensation. The device is used on a continuous casting mold ( 1 ) with a shaped casting cross-section ( 1 a), which is mounted in the oscillating frame ( 3 ). The leaf-spring-mounted oscillating frame ( 3 ) can be operated with the continuous casting mold ( 1 ) in a resonance oscillation method in order to give the preliminary section a better surface.

    9.
    发明专利
    未知

    公开(公告)号:DE50110754D1

    公开(公告)日:2006-09-28

    申请号:DE50110754

    申请日:2001-05-05

    Applicant: SMS DEMAG AG

    Abstract: The invention relates to a device for the continuous casting of metals, especially steel, by means of a continuous casting mold ( 1 ) which is mounted in an oscillating frame ( 3 ). Said oscillating frame can be driven so that it oscillates in the direction of casting ( 2 ), the course of the oscillation movement and/or the frequency being adjustable. The oscillating frame ( 3 ) is mounted with spring assemblies ( 4 a , 4 b ; 5 a , 5 b) arranged symmetrically on both sides of the strand, for guiding and weight compensation. The device is used on a continuous casting mold ( 1 ) with a shaped casting cross-section ( 1 a), which is mounted in the oscillating frame ( 3 ). The leaf-spring-mounted oscillating frame ( 3 ) can be operated with the continuous casting mold ( 1 ) in a resonance oscillation method in order to give the preliminary section a better surface.

    10.
    发明专利
    未知

    公开(公告)号:AT336316T

    公开(公告)日:2006-09-15

    申请号:AT01927941

    申请日:2001-05-05

    Applicant: SMS DEMAG AG

    Abstract: The invention relates to a device for the continuous casting of metals, especially steel, by means of a continuous casting mold ( 1 ) which is mounted in an oscillating frame ( 3 ). Said oscillating frame can be driven so that it oscillates in the direction of casting ( 2 ), the course of the oscillation movement and/or the frequency being adjustable. The oscillating frame ( 3 ) is mounted with spring assemblies ( 4 a , 4 b ; 5 a , 5 b) arranged symmetrically on both sides of the strand, for guiding and weight compensation. The device is used on a continuous casting mold ( 1 ) with a shaped casting cross-section ( 1 a), which is mounted in the oscillating frame ( 3 ). The leaf-spring-mounted oscillating frame ( 3 ) can be operated with the continuous casting mold ( 1 ) in a resonance oscillation method in order to give the preliminary section a better surface.

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