Cold rolling method

B - Operations – Transporting – 21 – B

Patent

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Details

B21B 9/00 (2006.01) B21B 1/36 (2006.01) B21B 45/02 (2006.01)

Patent

CA 2390171

The present invention relates to a method for cold--rolling metallic rolling stock (4), in which the rolling stock (4) passes through the roll nip (3) between oppositely driven rollers (2) at room temperature in order to undergo a plastic shape change. To avoid the problems caused by the use of liquid coolants and to achieve an improved surface quality of the rolling stock (4), the invention proposes that inert gas, which is at a lower temperature than the rolling-stock temperature in the roll nip, is blown into the region of the roll nip (3) The invention also relates to a cold-rolling stand for carrying out this method.

L'invention concerne un procédé pour le laminage à froid de matières à laminer métalliques (4). Selon ce procédé, les matières à laminer (4) passent, afin d'être déformées, à travers l'emprise (3) entre les cylindres (2) tournant en sens contraire, à température ambiante. L'invention vise à éviter les problèmes dus à l'utilisation de réfrigérants lubrifiants liquides et à obtenir une qualité de surface améliorée des matières à laminer (4). A cet effet, un gaz inerte ayant une température inférieure à la température des matières à laminer se trouvant dans l'emprise est soufflé dans la zone de l'emprise (3). L'invention concerne également une cage de laminoir à froid pour l'exécution de ce procédé.

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