B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 27/02 (2006.01) B22D 11/10 (2006.01) B22D 11/115 (2006.01)
Patent
CA 2187404
A process for manufacturing a metal ingot (10) with thixotropic properties in a continuous casting mould (12) is such that an electromagnetic stirring device (14) for shearing dendrites as they form extends over the whole of the solidification zone of the melt to be cast. The magnetic field generated by the stirring device (14) extends, without any zero force sites, over the whole of the cross-section of the mould. The magnetic field is adjusted such that the rate of shearing lies between 10 and 450 s -1. During the solidification process, the stirring device (14) is set to generate an oscillatory movement in a plane (E) perpendicular to the mould axis, such that the frequency of oscillation (fx, fy) of the stirring device (14) lies between 1 and 10 Hz of the stirring device and the amplitude of oscillation lies between 1 and 5 mm.
Carrupt Bertrand
Gabathuler Jean-Pierre
Alusuisse Technology & Management Ltd.
Swabey Ogilvy Renault
LandOfFree
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