Method for rolling shape steel having flange and web, and...

B - Operations – Transporting – 21 – B

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B21B 1/08 (2006.01) B21B 39/16 (2006.01)

Patent

CA 2187913

A horizontal roll guide device HG or a friction guide device FG is disposed in front, and in the proximity, of a finish universal mill FU of a rolling process of a shape steel having a flange and a web so as to restrict the center portion of the web in the transverse direction, the finish universal mill includes barrel width-variable horizontal rolls 1a and 1b, and axes XV of vertical rolls 2a and 2b are moved by a distance d on the entry side of the rolling direction relatively to the axes XH of the barrel width-variable horizontal rolls 1a and 1b to as to restrict the web. Due to the synergistic effect of these two restriction effects, web curving and web off-center of the web when the web of the shape steel is rolled from axial direction by the vertical rolls 2a and 2b by setting the roll width of the barrel width-variable horizontal rolls can be restricted. Accordingly, a variety of shape steels having a flange and various web heights can be produced very accurately.

Un appareil (HG) à cylindre de guidage horizontal ou un appareil de guidage à friction (FG) est disposé près de l'avant d'un laminoir finisseur universel (FU) pour réaliser un profilé ayant des brides et une âme. Par suite de l'effet de synergie de la réduction de la portion centrale de l'âme dans la direction transversale et de la réduction de l'âme par des cylindres horizontaux à largeur variable (1a, 1b) du laminoir finisseur universel, dans lequel les axes (XV) des cylindres verticaux (2a, 2b) sont déplacés seulement par la distance d dans la direction de la sortie du laminoir par rapport aux axes (XH) des cylindres horizontaux à largeur variable (1a, 1b), la largeur des cylindres horizontaux est choisie en fonction de la taille du profilé fini. Quand l'âme du profilé est laminée de sa direction transversale par les cylindres verticaux (2a et 2b), l'erreur de courbure et de centrage de l'âme peut être diminuée. Dans ces conditions, on peut obtenir des profilés avec différentes hauteurs d'âme.

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