Abstract: A method ascertains control variables for active profile and flatness control elements for at least one rolling stand for hot rolling metal strip with a plurality of i=1 . . . I successive passes and for ascertaining profile and center flatness values for the hot-rolled metal strip. The occurrence of fluctuations in the center flatness of the metal strip after the individual passes and the resulting disadvantages for the rolling stability and the product quality are prevented. The method provides that, also for the target center flatness of the metal strip after a predetermined pass k with i=1 . . . <k< . . . I and for the target center flatness after the subsequent passes, pass-specific interval ranges are also specified in each case, and in that the successive calculation of the control variables and profile values is then carried out taking into account such additional specifications as well.

Abstract: The present invention is related to an apparatus and a method for the electrolytic deposition of a zinc or zinc alloy layer on a workpiece, the apparatus comprising a container to hold the metal plating bath divided into at least two compartments with an electrode assembly in the container, the assembly comprises in a first compartment a soluble anode to provide ions of the at least one metal to be deposited and a cathode corresponding to the workpiece to be metal plated and in an anolyte compartment separated from the first compartment by an ion exchange membrane comprises an insoluble anode and wherein the electrode assembly in the compartments are connected by an adjustable power supply.