Method and apparatus for joining metal pieces

Details Method and apparatus for joining metal pieces Method and apparatus for joining metal pieces

B - Operations, Transporting

21

B

B21B 15/00 (2006.01) B21B 1/26 (2006.01) B23K 13/01 (2006.01) B23K 31/02 (2006.01)

Patent

CA 2255463

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 to perform heating. A plurality of spaced-apart inductors are arranged in the width direction and a synchronous control of phase is performed.

Méthode et appareil consistant à faire chauffer l'extrémité arrière d'une pièce métallique de tête et l'extrémité avant d'une pièce métallique de queue, puis à les presser et à les assembler avant de leur faire subir un laminage de finissage à chaud. Une bobine d'induction, pour réchauffer ces pièces métalliques, crée, dans le sens de leur épaisseur, un champ magnétique alternatif au niveau d'une de leurs extrémités et sur leurs faces opposées respectives. Cet appareil comporte également un certain nombre de bobines d'induction disposées dans le sens de la largeur, et il effectue une synchronisation de la phase.

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