A rolling mill with roll deflection bi-dimensionally controlled

Details A rolling mill with roll deflection bi-dimensionally controlled A rolling mill with roll deflection bi-dimensionally controlled

B - Operations, Transporting

21

B

B21B 13/14 (2006.01) B21B 1/22 (2006.01) B21B 13/02 (2006.01) B21B 29/00 (2006.01)

Patent

CA 2364069

A rolling mill with high precision in which its rolls are automatically supported in two dimensions at their mid-portions for controlling their flexures, comprising a housing, cluster of rolls and roll chocks. Said chocks consist of mid-chocks, side chocks which are horizontally sliceable and middle supporting means there between. In order to minimize the flexible deflection of the rolls during rolling, the rolling mill of the present invention is further provided with a bi-dimensionally mid-supporting automatic system, which is comprised of the housing, the chocks, a first mid-supporting means between the mid-chocks and the side chocks, a second mid-supporting means between the housing and the chocks, a third mid-supporting means between the housing and the side chocks. Said mid-supporting means comprise a screwdown means, horizontal supporting blocks, vertical supporting blocks and supporting blocks between the mid-chocks and the side-chocks. With such structure of the rolling mill, the flexible deflection of the rolls is significantly suppressed, thereby reducing the deviation of the rolled strips or plates in the cross-sections.

L'invention concerne un laminoir haute précision pouvant commander de manière bidirectionnelle le fléchissement des cylindres supportés de manière automatique au niveau de leurs centres. Ce laminoir comprend un boîtier, un jeu de cylindres et des empoises formées d'une empoise centrale, d'une empoise latérale pouvant coulisser de manière horizontale et d'un dispositif de support venant entre les deux empoises. Ce laminoir est formé d'un système de support central automatique bidirectionnel qui se compose d'un boîtier, de deux empoises, une centrale et une latérale, entre lesquelles est placé le dispositif de support, d'un deuxième dispositif de support central venant entre le boîtier et l'empoise centrale, ainsi que d'un troisième dispositif de support central venant entre le boîtier et l'empoise latérale et ce, dans le but que les cylindres subissent un fléchissement minimal. Ce dispositif de support intermédiaire comprend un dispositif de pression et des coussinets horizontaux, des coussinets verticaux et des moyens de support entre les empoises centrale et latérale. Cette structure de laminoir permet de réduire considérablement le fléchissement des cylindres tout en réduisant la différence d'épaisseur des bandes et plaques cylindriques dans les sections transversales.

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