INDUCTION HEATING COIL ASSEMBLY FOR BLOCKING CIRCULATION CURRENT IN INDUCTION HEATING LINE FOR CONTINUOUSLY CAST PRODUCT

摘要

PROBLEM TO BE SOLVED: To prevent the generation of parasitic circulation current by arranging an induction segment, plural magnetic yokes, and a magnetic field reducing device positioned in a gap between link conductors so as to suppress a magnetic flux on the outside of an induction device. ;SOLUTION: Crossing yokes 34, 38 are extended round the whole circumference of the end part corresponding to an induction coil 28, an intermediate yoke 42 is separated with a small air gap 56 and arranged in a separated group. The yokes 34, 38 are electromagnetically coupled with the corresponding yoke 42 existing on the same surface or the closely adjacent surface. By the electromagnetic coupling, the magnetic flux can easily run along the length of an electromagnetic shunt member 30. A pair of yokes 34, 38 is electromagnetically coupled by the adjacent yoke 42, by effecting on the air gap 56. Since the air gap 56 is relatively small compared with the length of the whole magnetic flux path, only small, minor divergence is generated in the magnetic flux path at each end part.;COPYRIGHT: (C)1997,JPO