The invention relates to a cross-rolling mill, having a plurality of roll shafts (1), each applying a radially directed rolling force to a workpiece, wherein orientation of a roll axis (w) of at least one of the roll shafts (1) adjustably changes about a first adjustment axis (S1) and a second adjustment axis (S2), wherein an intermediate member (9, 10) is arranged between a rotary baring (4, 5) and a control element (11, 12), and wherein the intermediate member (9, 10) includes a rolling force-transmitting rocker pin (14, 15) having a spherical surface (14a, 14b, 15a, 15b) that provides for pivotal movement in a plurality of directions.

In order to provide an adjustment of the roll gap under load with high positioning accuracy and regulation accuracy, a cross-rolling unit for adjusting rolls operating under load with, disposed on a force-absorbing roll stand, a mechanical setting unit for a first cross-roll setting and a hydraulic setting unit for a second cross-roll setting, wherein the mechanical setting unit includes two mutually displaceable mechanical subassemblies having a common axis of symmetry and the hydraulic setting unit includes at least two mutually displaceable hydraulic subassemblies having respectively one central axis, has the mechanical setting unit and the hydraulic setting unit disposed in the force-absorbing roll stand as a common subassembly. The axis of symmetry of at least one of the mutually displaceable mechanical subassemblies and the central axes of each of the mutually displaceable hydraulic subassemblies are the same.

A rolling mill stand (1) for rolling an elongated workpiece, preferably in an cross rolling mill, wherein the rolling mill stand (1) has: two working rolls (20) forming a rolling gap(S), which are designed to roll the workpiece conveyed along a rolling direction (R); at least one guide device (30) with at least one guide (40), which is designed to laterally support the workpiece in the rolling gap(S) by the guide (40) being in contact with the workpiece; wherein the guide device (30) has an angle adjuster (33), which is designed to pivot the guide (40) about one or more, preferably three, spatial axes (x, y, z).

The invention refers to the manufacturing of ball-shaped metal products. The method consists in through heating of round billets made in appropriate size in a mid-frequency induction unit, rolling such billets into balls in a cross rolling mill at 950 C.-1070 C., cooling the balls down to 620 C.-700 C. in a cooling drum with forced air cooling, heating the surface of the balls up to 850 C.-930 C. in a high-frequency induction unit containing a rotating transport tube and multiple inductor sections, quenching the balls to 125 C.-160 C. in a quenching drum where they are cooled by running water, and allowing the balls to self-temper in the containers. The method enables better wear and impact resistance of metal balls when they are made of low-alloy steels, thereby allowing to reduce the carbon mass fraction of the used steel.

A cross-rolling unit and a method for setting the roll pass of a cross-rolling unit, having at least two rolls and a roll housing, in which at least one of the rolls is mounted such that its position can be adjusted in order to change the roll pass, allow the roll pass to be adjusted by means of a roll-positioning apparatus even during rolling, which roll-positioning apparatus is characterized by a housing-connected part and a roller-mill-connected part, which can be moved relative to the housing-connected part during rolling, which parts can be repositioned relative to each other, and/or which roll-positioning apparatus characterized by a drive which is dimensioned in such a way that rolling forces can be applied.