Online roll matching method and system of working rolls of twenty-roll Sendzimir mill

Abstract

The invention discloses an online roll matching method and system of working rolls of a twenty-roll Sendzimir mill, and belongs to control systems. The method comprises the steps of forming a working roll database according to diameters of ground working rolls, and linking the working roll database with a roll system database system of the mill to achieve data sharing; calculating left and right eccentricity data and a rolling line of an entire mill roll system, and performing optimization and adjustment; checking mutual interference situations among the rolls in the roll system; calculating upper roll gap, lower roll gap and total roll gap values according to diameter data of the rolls in the actual roll system, and performing analog display; calculating the diameter range of upper and lower working rolls matched with the group of rolls according to the actual parameters of the rolls in the roll system, and determining a roll matching table of corresponding residual rolls; forming a dynamic roll matching table according to the calculation result of roll matching data of the working rolls; selecting the corresponding working rolls and carrying out roll changing operation according to an allowable matched roll diameter range of the upper and lower working rolls and roll numbers of the working rolls, which are given in the dynamic roll matching table.

Description

technical field [0001] The invention belongs to the field of control, in particular to an online roll matching control system for rolling mills. Background technique [0002] The 20-roll Sendzimir rolling mill (hereinafter referred to as the rolling mill) of the applicant's enterprise is a single-stand reversible multi-roll cold rolling mill. Its characteristic is that 20 rolling rolls are superimposed in a circular shape, embedded in the integral cast steel frame with "zero convexity", and have the advantages of uniform deformation, large reduction and high-speed continuous rolling. [0003] The 20 rolls mentioned therein include 2 work rolls, 4 first intermediate rolls, 6 second intermediate rolls and 8 backup rolls, etc., a total of 20 rolls, forming a complete set of roll systems. figure 1 shown. [0004] exist figure 1 Among them, the sticks labeled S and T are 1# and 2# work rolls (also known as upper and lower work rolls), their nominal roll diameter: 63.5mm, minim...

AI Technical Summary

Problems solved by technology

In actual rolling production, abnormal conditions such as rolling line deviation, roll gap opening and strip thickness mismatch, and strip shape warping after rolling will occur, and operations such as repeated roll changes will occur, affecting Product quality is reduced, production efficiency is reduced, and there are great disadvantages

If the former offline roll matching program is used, it is expensive and not suitable

Images