Method for controlling contact pressure peak value between rolling mill and roller of HC/HCW/UC/UCMW

Abstract

The invention discloses a method and a roll for controlling the contact pressure peak value between rolls of HC / HCW / UC / UCMW rolling mills in the field of steel rolling. The method includes rolling a steel strip in a HC / HCW / UC / UCMW rolling mill by using backup rolls with a roll profile curve of: . Among them, in the HC / UC rolling mill, the strip is rolled with the work roll whose roll shape curve is: By comprehensively optimizing the original roll shape curve of the roll, the method realizes the uniformity of the contact pressure between the rolls without affecting the flatness of the rolling mill and the control ability of the plate crown, reduces the peak value of the contact pressure between the rolls, and solves the problem of the contact pressure between the rolls. Local roll wear and strip surface quality problems caused by pressure peaks.

Description

technical field [0001] The invention relates to the field of steel rolling, in particular to a method for controlling the contact pressure peak value between rolls of HC series rolling mills and rolls. Background technique [0002] Shape and section shape are important quality indexes of strip rolling, and shape control is the key technology of strip rolling mill. Since the 1970s, the control of plate shape and section shape, especially the control of plate shape, has become a key topic of research and development. People have carried out a series of work on flatness basic theory and flatness control equipment, and have made great achievements. Many new flatness control rolling mills have been developed, such as CVC series rolling mills, HC series rolling mills and PC rolling mills, etc. Effect. Among the HC series rolling mills invented by Hitachi, including HCW, HC, UC and UCMW, the HCW rolling mill ( figure 1 shown) adopts the axial movement technology of work rolls, H...

AI Technical Summary

Problems solved by technology

[0004] In order to reduce the peak value of the contact pressure between the rolls, the end of the axially moving work roll or intermediate roll can be designed as a circular arc, which partially reduces the peak value of the contact pressure between the rolls. However, for the plate mill, the roll shape control of the backup roll is Mainly, the impact on the peak value of the contact pressure between the rolls is the largest, so the peak value of the contact pressure between the rolls after the above improvement is still relatively large, and it is often found that there is serious local wear on the arc of the work roll or the intermediate roll at the production site. And it will cause strip surface quality problems

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