Rolling stand for producing plane rolled strips having a...

Details Rolling stand for producing plane rolled strips having a... Rolling stand for producing plane rolled strips having a...

B - Operations, Transporting

21

B

B21B 13/14 (2006.01) B21B 13/02 (2006.01) B21B 13/04 (2006.01) B21B 27/00 (2006.01) B21B 27/02 (2006.01) B21B 31/20 (2006.01) B21B 35/00 (2006.01) B21B 35/10 (2006.01) B21B 37/42 (2006.01)

Patent

CA 2431775

The aim of the invention is to improve known roll stands (10) which are characterised by working rolls (1, 2) of various diameters, in such a way that a strip is obtained which is largely free of tensions and undulations, has a desired strip profile superelevation, and can be used approximately universally. To this end, the support rolls (3, 4) and the working rolls (1, 2) are arranged in an axially displaceable manner in the roll stand (10, 11), the position of at least one of the working rolls (1, 2) can be adjusted in the discharge direction (7) of the roll strip (6), and that the support rolls (3, 4) and the working rolls (1, 2) are provided with a curved contour (continuously variable crown which is determined by an at least second order polynomial) which extends essentially over the whole surface length of the roll, said contours being staggered by 180~ in relation to each other and respectively embodied in such a way that both contours of the working rolls (1, 2) complete each other to form a symmetrical contour of the roll gap.

L'objectif de l'invention est d'améliorer des cages de laminoir (10) connues, lesquelles se caractérisent par des cylindres de travail (1, 2) présentant des diamètres différents, de telle sorte que l'on puisse obtenir, avec une possibilité d'utilisation universelle, un feuillard dans une large mesure exempt de tensions et, en particulier, exempt d'ondulations, qui présente un surhaussement de profil désiré. A cet effet, il est proposé, selon l'invention que les cylindres d'appui (3, 4) et les cylindres de travail (1, 2) soient disposés dans la cage de laminoir (10, 11) de façon à pouvoir se déplacer axialement, que la position d'au moins un des cylindres de travail (1, 2) puisse être réglée dans le sens de sortie (7) du feuillard laminé (6), et que les cylindres d'appui (3, 4) et les cylindres de travail (1, 2) soient pourvus d'un contour dont la courbe suit toute la longueur de table (couronne variable en continu qui est déterminée par un polynôme d'au moins du deuxième ordre), ces contours étant décalés de 180· l'un par rapport à l'autre et formés chacun de telle sorte que les deux contours de table des cylindres de travail (1, 2) se complètent pour constituer un contour symétrique de l'espace entre les cylindres.

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