Method for improving online roll grinding rate of finishing mill

• Main Authors: WANG WENJIE, FAN CHUILIN, ZHANG HONGJUN, TIAN YANFENG, XIANG JUN, SHI NAIAN
• Format: Patent
• Language: Chinese; English
• Published: 13.06.2012
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PERFORMING OPERATIONS; PHYSICS; PUNCHING METAL; REGULATING; ROLLING OF METAL; TRANSPORTING

The invention relates to a method for improving the roll grinding rate of a finishing mill. In the method, after a program controlled computer computes the data acquired by an executing computer on the grinding at the last roll grinding rhythm, a grinding time is set to control the executing computer to perform grinding alone in an IN BAR or BAR To BAR manner or in In BAR and BAR TO BAR manners, which can be switched automatically, in a preset mode. The method has the advantages that: the grinding rate of the working roll of the finishing mill is doubled, the surface roughness of the working roll is kept between 1.0 and 1.5 micrometers constantly; the residual abrasion loss of the working roll is reduced; the roll surface transition is smooth and the rebound width of 250 millimeters is realized; annular grooves are not formed on the surface of the roll, local high points on the cross sections of steel strips are eliminated, and the fixed-width rolling amount is up to over 70 kilometers; and meanwhile, the ser