Device and method for descaling a workpiece in motion

A device for descaling a moving workpiece in a movement direction in relation to the device, the device comprising:

• at least one rotor head rotatable about an axis of rotation;
• a plurality of jet nozzles positioned at an end face of the at least one rotor head which faces towards the workpiece, the plurality of jet nozzles being configured to selectively dispense a liquid onto the workpiece at a predetermined angle of attack (α) that is inclined with respect to an orthogonal on a surface of the workpiece, the liquid dispensed from the plurality of nozzles being at a predetermined pressure sufficient to descale particles from the workpiece;
• wherein the jet nozzles are arranged and configured on the at least one rotor head such that during rotation of the at least one rotor head about its axis of rotation, a spraying direction of the liquid being dispensed from the jet nozzles, with respect to a projection in a plane parallel to the surface of the workpiece is aligned permanently opposed at a spraying angle (β) between 170° and 190°, to the movement direction of the workpiece and the angle of attack (α) for the plurality of jet nozzles remains constant;
• and
• a collection unit arranged adjacent the workpiece and upstream from the at least one rotor head with respect to the movement direction of the workpiece, such that the pressurized liquid dispensed from the jet nozzles, after rebounding from the surface of the workpiece and the particles removed by the pressurized liquid from the surface of the workpiece are collected by the collection unit.