Abstract: An apparatus and a method for influencing the frictional conditions between an upper roll and a lower roll of a roll stand of a hot-rolling train for wide strip or a cold-rolling train for strip. The apparatus includes a spraying device arranged at the entry side of the roll stand for spraying a defined quantity of liquid in the direction of the roll gap and a control device for determining the quantity and discharge of this liquid, wherein used as a control variable is a predetermined or also computed variable in connection with the actual roll torque of the lower roll or/and the upper roll.

Abstract: A roll stand comprises a frame, a pair of upper guide members spaced apart on the frame along an upper axis and a pair of lower guide members spaced apart on the frame along a lower axis parallel to the upper axis. Guide formations between the members and the frame prevent the members from moving axially relative to the frame and permit the members to move vertically in the frame. Respective upper and lower journal blocks on the members are prevented from moving vertically relative to the respective members by respective guide formations between the blocks and the members but can move axially on the members. An upper roller is carried between the upper journal blocks, axially coupled thereto, and rotatable thereon about the upper axis and a lower roller is carried between the lower journal blocks, axially coupled thereto, and rotatable thereon about the lower axis.

Abstract: The mold for continuous casting of a rollable steel flanged billet having a web and two flanges used to make a steel beam or girder comprises two side walls extending over the web and the flanges and two end walls determining the thickness of the flanges positioned movably between the side walls. To provide a continuous casting mold in which the web length, the web thickness and the flange thickness can be independently varied, each of the side walls has a straight portion and an exteriorly directed bent out end portion angled relative to the straight portion, each of the end walls is positioned between a straight portion of one of the side walls and an adjacent opposing bent out end portion of the other of the side walls and at least one side wall is movable in the direction of its planar surface relative to the other side wall transverse to the casting direction.

Abstract: To avoid impacts on the first pass of the rolled product through a universal rolling mill the vertical rolls of the rolling mill can be provided with their own integral drive according to our invention. In an electrical drive for a vertical roll the vertical roll is the rotor of an electric motor while the stator is a circular collar on a nonrotatable supporting axle for the vertical roll. In a hydraulic drive for a vertical roll a hydraulic motor is either located in a housing side extension of the structural member supporting the vertical roll to drive it from the outside by spur wheel gearing or by a frictional drive or the hydraulic motor is mounted in the nonrotating supporting axle of the vertical roll and engages on an inner cogged drive ring on the vertical roll from the inside by spur gearing positioned on a transverse plane.

Abstract: A rolling stand comprising supporting shaft pairs 3, 4, in which these supporting shafts are supported at two sides and so as to be adjustable in two parallel roll housings 1, 2. At one side, rolling rings 15 can be slipped on the supporting shaft pairs 3, 4, while the other side can be coupled with drive elements 16. The roll housing 2 remote of these drive elements 16 can be moved away from the other roll housing 1 in the direction of the roll axes together with the bearings which are pulled off the supporting shaft pair 3, 4. The supporting shaft pair 3, 4 can be secured and fixed in the other roll housing 1 in the resulting cantilevering position which is supported on one side.

Abstract: A pair of upper crossheads for a universal rolling mill is engaged with nut assemblies on extended ends of a pair of screwdown spindles. Each crosshead can be swung about a nut assembly on one of the screwdown spindles while disengaged from a nut assembly on the other screwdown spindle for pivotal movement of the crosshead to one side of the housing frame. The nut assemblies for the ends of the crossheads, which remain engaged with the screwdown spindles, have threads that raise the crossheads during pivotal movement. Pedestal supports on projecting wing portions of the frame carry the pivoted parts of the crossheads. During operation of the universal rolling mill, the upper crossheads are held in their operative position by a clamp engaged with a crosstie that extends between two nut assemblies that can be exposed.