Clecim

Gerard Bertholon

Joseph Michalon

An installation for replacing live rolls in a rolling mill, comprising a drum which rotates about an axis parallel to the axes of the rolls in the tightening plane passing through these axes. The drum comprises at least two compartments, each symmetrical with respect to a median plane passing through the axis of rotation, and which can be placed, alternately, by rotating the drum, in a roll replacement position in front of the working zone of the mill stand. Each compartment has two pairs of guide rails which, in the roll replacement position of the corresponding compartment, are aligned, respectively, with two pairs of fixed rails in the stand. One of the compartments is vacant, while each of the other compartments holds in store a pair of live rolls, which have chocks bearing on the corresponding rails of the compartment. The drum is associated with a mechanism for transferring live rolls into the vacant compartment of the drum and replacement rolls into the working position in the stand.

Roll replacement installation

Cleaning apparatus for a roll placed in contact with a metal strap moving longitudinally in an installation comprising a set of rotary-mounted superposed rolls between two stands of a fixed supporting cage and comprising at least one wiping tool (4) parallel to the axes of the rolls, a device (3) supporting the wiping tool mounted slidingly on straight guide rollers (24, 24') provided on a cradle (2) pivotably mounted on both stands (11) of the cage (1) around a pivot axis (20) parallel to the axes of the rolls. The cradle (2) comprises two spaced parallel flanges (21) linked rigidly by a crossbeam (22) and rotatably mounted, respectively, on two bearings fixed, respectively, on both stands (11) of the cage (10) and placed so that the cradle (2) can pivot between a working position in which the sliding plane of the supporting device (3) is oriented to the roll (1) to be cleaned and a maintenance position in which the sliding plane is removed from the roll ( 1) and the supporting device (3) is placed along both stands (11) of the cage (10), slightly extending in from the roll (1) and is placed along both stands (11) outside the cage, the supporting device extending in cantilever, in forward position, beyond the guide rollers (24, 24') to its front section (36) carrying the wiping tool (4) is located close to the roll (1) and the front section (36) is brought back of the cradle (2) in the rearward position of the frame (3) to allow the cradle (2) to pivot to the maintenance position along the stands (11) of the cage.

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Saint-Etienne, France

Gerard Bertholon