Method and device for controlling stirring in a strand

Details Method and device for controlling stirring in a strand Method and device for controlling stirring in a strand

2005-01-18

2005-01-18

Lin, Kuang Y. (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S504000

Reexamination Certificate

active

06843305

ABSTRACT:
A method of controlling the flow of molten metal in non-solidified portions of a strand (3) during continuous casting, and a device for application of the method. The device comprises a two-phase or plural-phase stirrer (1) arranged around a mould (6) that is open in opposite ends and that surrounds the strand (3), said stirrer (1) being arranged to generate a moving magnetic field in the melt, and at least one magnetic flow-conducting body (15) being placed between an inner periphery of said stirrer (1) and the outer periphery of the mould (6). In the case of open casting, the magnetic flow-conducting body (15) is positioned in a first position in which it displaces at least a part of the magnetic flow generated by the stirrer (1) in a direction towards the meniscus (17) of the strand (3), and, in the case of closed casting, the magnetic flow-conducting body (15) is positioned in a second position in which it displaces at least a part of the magnetic flow generated by the stirrer (1) away from the meniscus (17) of the strand (3).

REFERENCES:
patent: 4957156 (1990-09-01), Mayrhofer
patent: 5664619 (1997-09-01), Andersson et al.
patent: 0 317 790 (1989-05-01), None
patent: 4 274 846 (1992-09-01), None

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