Siemens Vai Metals Technologies Sas

Vai Clecim - Le Polyedre

Via Clecim

Germain Le Viavant

The invention relates to a method for changing the configuration of a rolling mill including at least two working rolls and two back-up rolls, means for applying a clamping load and two sets of hydraulic cambering cylinders, at least of both working rolls. According to the invention, at least two types of working rolls (C, C) are realized having, respectively a great diameter and a small diameter and the quarto configuration rolling mill is switched to a sexto configuration and conversely, the rolls with great diameter (C, C') being used as working rolls in the quarto configuration and, in the sexto configuration, as intermediate rolls between each back-up roll and a roll with small diameter (C, C&#x2032;) used as a working roll.

Method for changing the configuration of a rolling mill and advanced rolling mill for carrying out said method

The invention relates to a device for guiding a band-type product () especially a metal band, comprising at least two conical deflectors () arranged head to foot. According to the invention, each deflector () comprises a fixed base () whereon are mounted, in the manner of satellites, a plurality of rotating guiding rolls () forming the same angle (A) with an axis () of the deflector (), and said deflectors () are oriented relative to the longitudinal running axis () of the band () so that the latter comprises successively, in the running direction, an upstream portion () tangent and perpendicular to an input generatrix () on a first deflector (), a central portion () tangent and perpendicular, upwardly to an output generatrix () of the first deflector () and, downwardly, to an input generatrix () on the second deflector () and a downstream portion () tangent and perpendicular to an output generatrix () of the second deflector ().

Guiding device for a band-type product

A roll mill comprising a retaining stand with two distant stanchions (,), at least two working rolls (,) each rotating respectively in two chocks, and means for applying bending loads to each end of both working rolls, said means comprising, for both chocks (,), two sets of, respectively, positive and negative bending jacks. According to the invention, both working rolls (,) of said roll mill are fitted with identical chocks (,) capable, by simple turning-over, to be mounted on either of the said working rolls (,), each chock having, on each side of the clamping plane (P,), a lug (,) with a staggered profile comprising at least one bearing part (,) extending over a portion only of the length of the chock (,) so as to provide at least one free space (,), and each negative bending jack (,) of a first chock (,) is placed on the same side of the rolling plane (P,) as the positive bending jack (,) of the second chock (,), which crosses the rolling plane (P,) passing through the said free space (,) left beside the bearing part (,) of the first chock (,).

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Beauchamp, France

Germain Le Viavant