Patent ID: 7845389
Filing Date: 2010-12-07
Classification: B22D

Abstract:
1. Method for dynamic adjustment of roller segments ( 13 to 17 ) that support and/or guide both sides of a continuously cast strand ( 4 ) made of metal, with at least two successive pairs of rollers ( 18 ), comprising the steps of: adjusting the pairs of rollers ( 18 ) relative to each other with piston-cylinder units ( 19 ), which are acted upon with both position control and pressure control; subsequently adjusting the pairs of rollers ( 18 ) to the continuously cast strand ( 4 ) by position control; switching hydraulic pressure from position-controlled operation to pressure-controlled operation when the hydraulic pressure in a piston-cylinder unit ( 19 ) reaches a predetermined value; installing the roller segments ( 13 to 17 ) in a hot bar zone and a soft reduction zone; and operating the roller segments by an automatic segment control system ( 32 ) and a basic automation system ( 33 ) so that the method is applied to roller segments ( 13 to 17 ) of continuous bloom and billet casting machines ( 20 ), wherein in the soft reduction zone the rollers are operated on the billet while the billet is in a semi-solid state, further including installing rotationally driven rollers ( 23 ) on the segment entrance side ( 21 ) and/or on the segment exit side ( 22 ), wherein the driven rollers are driven by drive motors in communication with the basic automation system.