Method and equipment for cooling and lubricating rolls of a...

B - Operations – Transporting – 21 – B

Patent

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Details

B21B 27/10 (2006.01) B21B 45/02 (2006.01)

Patent

CA 2452057

The invention relates to a method and a device for cooling and/or lubricating rollers, in particular the working rollers (2, 3) on a rolling stand and a rolled strip (1), rolled between the above rollers and transported onwards, using water in the form of spray jets (4, 5) as cooling medium and oil, oil/air mix, oil/water mix, oil/air/water mix or grease mixtures as lubricant. In order to improve the lubricating and cooling effects, a combined application of super-cooling the strip and roller surfaces and roller lubrication on the input side of the stand is disclosed, in which both media, water and lubricant, are separately fed to the rollers (2, 3) and the rolled strip and applied to the roller surface at different application points. Separate reservoirs for water and lubricant and separate lines to the spraying bar (11) for water and the spraying bar (12) for the lubricant are provided.

L'invention concerne un procédé et un dispositif de refroidissement et/ou de lubrification de cylindres, en particulier de cylindres de travail (2, 3) d'une cage de laminoir, et d'une bande laminée (1), acheminée et laminée entre les cylindres précités, en utilisant comme lubrifiant de l'eau sous forme de jets pulvérisés (4, 5) comme support de refroidissement, ou de l'huile, un mélange huile-air, un mélange huile-eau, ou un mélange huile-eau-air ou des mélanges de graisses. En vue d'améliorer les effets de lubrification et de refroidissement, l'invention est caractérisée en ce qu'on utilise en combinaison un surrefroidissement de la surface de la bande et des cylindres et la lubrification des cylindres sur le côté entrée de la cage, et en ce que les deux supports eau ou lubrifiant sont amenés séparément aux cylindres (2, 3) ou à la bande laminée et appliqués sur la surface des cylindres en différentes zones d'application. Il est prévu des réservoirs distincts pour l'eau et le lubrifiant, ainsi que des lignes distinctes aboutissant aux barres de pulvérisation (11) pour l'eau et aux barres de pulvérisation (12) pour le lubrifiant.

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