Patent ID: 6929697

Claim:
Device for the hot dip coating of metal strand ( 1 ), especially steel strip, in which the metal strand ( 1 ) can be passed vertically through a tank ( 3 ) that contains the molten coating metal ( 2 ) and through an upstream guide channel ( 4 ), wherein, in the area of the guide channel ( 4 ), an electromagnetic inductor ( 5 ) is installed, which can induce induction currents in the coating metal ( 2 ) for holding back the coating metal ( 2 ) in the tank ( 3 ) by means of an electromagnetic traveling field, which induction currents interact with the electromagnetic traveling field to exert an electromagnetic force, and wherein the inductor ( 5 ) has at least two main coils ( 6 ), which are arranged in succession in the direction of movement (X) of the metal strand ( 1 ), and at least two correction coils ( 7 ), which serve to control the position of the metal strand ( 1 ) in the guide channel ( 4 ) in the direction (N) normal to the surface of the metal strand ( 1 ) and are also arranged in succession in the direction of movement (X) of the metal strand ( 1 ), wherein at least some of the correction coils ( 7 ), as viewed in the direction of movement (X) of the metal strand ( 1 ), are arranged in a staggered fashion relative to one another perpendicular to the direction of movement (X) and perpendicular to the direction (N) normal to the surface of the metal strip ( 1 ).