Magnesium hot rolling method and apparatus

Details Magnesium hot rolling method and apparatus Magnesium hot rolling method and apparatus

B - Operations, Transporting

21

B

B21B 3/00 (2006.01) B21B 1/26 (2006.01)

Patent

CA 2702659

A magnesium alloy hot rolling method includes: a first rolling step in which a magnesium plate (M0, M1) is rolled reciprocatingly between an upstream heating furnace (2) which is located on an upstream side of a rolling mill (1) and which heats the magnesium plate (M0, M1), and a upstream heating furnace (3) which is located on a downstream side of the rolling mill (1) and which heats the magnesium plate (M0, M1); and a second rolling step in which the temperature of respective end portions of the magnesium plate (M0, M1) on both the upstream and downstream sides is maintained while the magnesium plate (M0, M1) is being rolled reciprocatingly between an upstream temperature maintaining apparatus (5) which transports the heated magnesium plate (M0, M1) while maintaining the temperature thereof, and a downstream temperature maintaining apparatus (6) which transports the heated magnesium plate (M0, M1) while maintaining the temperature thereof. According to the magnesium hot rolling apparatus of the present invention and to the magnesium hot rolling method of the present invention which uses this apparatus, it is possible to prevent any deterioration in the quality of a product which is due to temperature variations during the hot rolling of magnesium alloy.

L'invention concerne un procédé de laminage à chaud de magnésium qui comprend une première étape de laminage consistant à effectuer un laminage alternatif de plaques de magnésium (M0, M1) entre un four de chauffage côté amont (2) agencé sur le côté amont d'un laminoir (1) pour chauffer les plaques de magnésium (M0, M1) et un four de chauffage côté aval (3) agencé sur le côté aval du laminoir (1) pour chauffer les plaques de magnésium (M0, M1), et une seconde étape de laminage consistant à effectuer un laminage alternatif des plaques de magnésium (M0, M1) tout en conservant la chaleur dans les extrémités côté amont et côté aval de celles-ci entre un dispositif de rétention de chaleur côté amont (5) destiné à porter/retenir la chaleur des plaques de magnésium chauffées (M0, M1) et un dispositif de rétention de chaleur côté aval (6) destiné à porter/retenir la chaleur des plaques de magnésium chauffées (M0, M1). Grâce à l'appareil de laminage à chaud de magnésium selon la présente invention et au procédé de laminage à chaud de magnésium employant l'appareil, on peut empêcher la qualité d'un produit de se détériorer en raison d'une variation de température pendant le laminage à chaud d'un alliage de magnésium.

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