Method for producing a magnesium hot strip

C - Chemistry – Metallurgy – 22 – F

Patent

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Details

C22F 1/06 (2006.01) B21B 1/46 (2006.01) B21B 3/00 (2006.01) B21B 1/34 (2006.01) B21B 39/12 (2006.01) B21B 45/00 (2006.01)

Patent

CA 2425580

The invention relates to a method for producing a magnesium hot strip, in which a melt from a magnesium alloy is continuously cast to form a roughed strip with a thickness of maximum 50 mm, and in which the cast roughed strip is hot-rolled directly from the cast heat at a hot-rolling initial temperature of at least 250 °C and maximum 500 °C to form a hot strip with a final thickness of maximum 4 mm, whereby in the first hot-rolling pass a reduction in the thickness of at least 15 % is achieved. With the method according to the invention, magnesium sheets with improved deformability can be produced with reduced manufacturing effort and expenditure.

L'invention concerne un procédé de production d'un feuillard à chaud de magnésium, selon lequel une masse fondue, constituée d'un alliage de magnésium, est coulée en continu pour l'obtention d'un pré-feuillard d'une épaisseur d'au maximum 50 mm et le pré-feuillard coulé est laminé à chaud directement hors de la chaleur de coulée à une température de début de laminage à chaud comprise entre 250 DEG C et 500 DEG C pour l'obtention d'un feuillard à chaud d'une épaisseur finale d'au maximum 4 mm. Ce procédé permet une réduction d'épaisseur d'au moins 15 % dans une première passe de laminage à chaud et la production à coûts réduits de tôles de magnésium d'une meilleure aptitude au formage.

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