METHOD AND APPARATUS FOR JOINING METAL PIECES

摘要

According to the method and apparatus of the invention, the rear end of a preceding metal piece and a front end of a succeeding metal piece are heated, pressed and joined prior to the finishing hot rolling. An alternating magnetic field running through the metal pieces in the thickness direction thereof is generated in an end region on opposed faces of the respective metal pieces by an inductor to perform heating. The relative position between the magnetic poles of the inductor and the metal pieces is changed in longitudinal direction to adjust a penetration quantity of magnetic flux of the alternating magnetic field for each metal piece.