Patent ID: 9700924
Date: 2017-07-11
CPC Classifications: B21B

Claim:
1. A method for rolling of rolling stock ( 1 ), comprising the steps of: applying a water-based cooling lubricant to the rolling stock ( 1 ) and/or to at least one roll of a pair of rolls ( 20 , 22 , 30 , 32 ) forming a roll gap ( 200 , 300 ); adding at least one water-soluble, tribologically active additive to the water-based cooling lubricant before the water-based cooling lubricant is applied to the rolling stock and/or to the at least one roll; collecting excess cooling lubricant after application to the rolling stock ( 1 ) and/or to the at least one roll ( 20 , 22 , 30 , 32 ) whereupon the excess cooling lubricant is used again for application to the rolling stock ( 1 ) and/or to the at least one roll ( 20 , 22 , 30 , 32 ); continuously filtering the excess cooling lubricant after the excess cooling lubricant has been applied but before the excess cooling lubricant is reapplied so as to filter material abraded from the rolls in a section of a particle spectrum in which a largest lengthwise dimension of a single particle is less than 5 μm; determining with a sensor an accumulation of the water-soluble additive on the rolling stock ( 1 ) and/or on the at least one roll ( 20 , 22 , 30 , 32 ) resulting from evaporation of a portion of the water-based lubricant; and adding additional of the water-soluble additive to the filtered excess-cooling lubricant based on the accumulation of the water-soluble additive on the rolling stock and/or on the at least one roll before the excess-cooling lubricant is used again for application to the rolling stock and/or to the at least-one roll.