Continuous metal tube casting method and apparatus using inner s

Details Continuous metal tube casting method and apparatus using inner s Continuous metal tube casting method and apparatus using inner s

1990-08-17

1992-06-23

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164502, B22D 2702

Patent

active

051234769

ABSTRACT:
An electromagnetic, levitation metal pipe casting method and system which provides an improved and simplified combined heat exchanger/levitator/containment coil assembly that comprises a single, outer multi-phase traveling wave coil structure and an inner solenoid coil structure. The outer, multi-phase traveling wave coil structure is positioned radially outside and coaxial with solidifing pipe during the casting process. The inner solenoid coil is positioned coaxial with and inside the pipe being cast. The outer multi-phase traveling wave coil and the inner solenoid coil are operated at substantially different frequencies and excitation current magnitudes. The improved system and method offer several functional and physical advantages over previous known levitation pipe casting systems. The principal improved features are:

REFERENCES:
patent: 4126175 (1978-11-01), Getselev
patent: 4414285 (1983-11-01), Lowry et al.
patent: 4452297 (1984-06-01), Ungarean et al.
patent: 4865116 (1989-09-01), Peterson et al.

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