Patent ID: 6029681
Filing Date: 2000-02-29
Classification: B21B

Abstract:
An apparatus for descaling semi-finished products (4) by means of highly pressurized water that is sprayed through a nozzle device (10) onto the surface of the semi-finished product which is moved in a direction of movement past the nozzle device (10), wherein the nozzle device is arranged for movement towards and away from the direction of movement by a drive (22) under the control of a control device (44) comprising a sensor adapted to determine the distance (a) of the nozzle device from the surface of the product, the apparatus characterized in thata plurality of nozzle devices (10) attached at a bar (16) which is mounted at a fixed carrier (23) by means of a four bar linkage means (18, 20), which is pivotable by the drive (22), and in that the control device (44) is provided for actuating the drive (22) in response to an output signal of the sensor, which is designed as a displacement transducer (40), for keeping constant the distance (a) of the nozzle device (10) from the surface of the semifinished product.