Leveling method for finishing mill after roller changing

• Main Authors: ZHANG RENQI, WANG JIAN, ZHU KONGLIN, ZHANG YONG, ZHU YULIN
• Format: Patent
• Language: Chinese; English
• Published: 21.08.2013
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

The invention discloses a leveling method for a finishing mill after roller changing. The method comprises the following steps: a, recording a rolling force deviation value F' and an oil column deviation value h0' of two sides of a working roller after roller gap zeroing in a previous production planning cycle and an oil column deviation value h2' during stable rolling in the previous production planning cycle; b, imposing rolling forces on the working roller, and stopping pressing operations on oil cylinders when the sum of the rolling forces reaches a first set press tonnage; c, adjusting the rolling force deviation value of two sides of the working roller after step b to be within a static deviation threshold range; d, pressing the oil cylinders on two sides of the working roller simultaneously again, and stopping pressing operations on the oil cylinders when the sum of the rolling forces on two sides reaches a second set press tonnage; and e, calculating an equivalent adjustment value H according to an eq