Device for rotating rolls immersed in fusion metal bath, comprises an arm support, an outer ring fretted on a bush having six open housings in which solid cylinders are arranged uniformly around the inner side of the bush, and stop ring

摘要

The device for rotating rolls (7) immersed in fusion metal bath, comprises an arm support, an outer ring fretted on a bush (3) having six open housings (8) in which solid cylinders (5) are arranged uniformly around the inner side of the bush, and a stop ring. Three contact points (6) of solid cylinders are arranged with the nozzle of the roll. The guiding of rotation of rolls is carried out on a contact zone constituted by two consecutive solid cylinders located on both sides of contact point. The bush is turned on itself to present a second contact zone. The device for rotating rolls (7) immersed in fusion metal bath, comprises an arm support, an outer ring fretted on a bush (3) having six open housings (8) in which solid cylinders (5) are arranged uniformly around the inner side of the bush, and a stop ring. Three contact points (6) of solid cylinders are arranged with the nozzle of the roll. The guiding of rotation of rolls is carried out on a contact zone constituted by two consecutive solid cylinders located on both sides of contact point. The bush is turned on itself to present a second contact zone. The solid cylinders presenting an used contact zone are turned themselves to present a new contact zone. Diameter defined by the opposing solid cylinders is greater than a diameter of the nozzle to a distance corresponding to minimum clearance. The contact point is placed in the middle of a distance separating two consecutive cylinders, and constituted by holes or notches. The device is assembled by minimum clamping of cylinder in the bush, minimum clamping of the bush with respect to the outer ring, and minimum clamping between the external ring and the arm support. Blocking of different elements of the device in operating conditions and temperature is produced by an effect of differential expansion of the materials.