Patent Document ID: 8001820
Application ID: 11989498
Patent Flag: 1

Claim One:
1. A method for lubricating and cooling rolls ( 3 , 4 , 5 , 6 ) and metal strip ( 2 ) during rolling in a rolling stand ( 1 ), where a lubricant ( 9 ) is applied by spraying at least on a run-in side ( 7 a ) and a coolant ( 10 ) is applied by spraying on a runout side ( 8 a ), and where the lubricant ( 9 ) and the coolant ( 10 ) consist of liquid substances with lubricating, cleaning, and inerting activity or a combination of these substances and are supplied to an underside ( 2 a ) of the metal strip ( 2 ) and/or to an upper side ( 2 b ) of the metal strip ( 2 ) and/or to the lower work roll ( 4 ) of the rolling stand ( 1 ) and/or to the upper work roll ( 3 ), wherein an amount of the pure lubricant applied on the run-in side ( 7 a ) is continuously computed and metered in such a way by means of a physical computer model ( 22 ) that is corresponded to a minimal amount of lubricant that is actually needed during the rolling, and where the physical computer model for a continuous computation of the minimal amount of lubricant continuously takes into account process data ( 23 ) of metal strip speed ( 13 ), metal strip quality ( 14 ), metal strip flatness ( 11 a , 11 b ), metal strip surface ( 26 ), and metal strip tension ( 28 ), on the run-in side ( 7 a ) of the rolling stand ( 1 ) and the process data of rolling force ( 29 ), work roll diameter ( 30 ), work roll roughness ( 31 ) and roll material ( 32 ) on the runout side ( 8 a ) of the rolling stand ( 1 ).