A treatment method suitable for roll taper defects of four-high rolling mill

Abstract

A roller taper defect treatment method for a four-high rolling mill mainly includes the following steps executed by a computer of 1 collecting basic device parameters; 2 collecting basic rolling process parameters of products of typical specifications; 3 defining an optimal roller inclining calculation process variable, a roller inclining amount, a roller inclining optimal step size, an objective function, an initial value of the objective function, a working roller channeling amount, a working roller bending force and an optimal roller inclining amount; 4 calculating the working roller channeling amount, the working roller bending force, the roller inclining amount and lateral distribution values of front tension of strips at an outlet of the rolling mill; 5 calculating the objective function; 6 completing the calculation after obtaining the roller inclining amount. The roller taper defect treatment method for the four-high rolling mill can achieve quantitative compensation for roller taper defects, minimizes or even eliminates the impact of the roller taper defects on the shape of the strips, solves the problem that the treatment of strip shape defects caused by roller taper is almost entirely dependent on experience of field operators and improves the accuracy quality of rolled strips.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, in particular to a method for treating roll taper defects of a common four-high rolling mill. Background technique [0002] Roll taper refers to the phenomenon that during the rolling process, the roll has a certain taper due to the grinding machine precision and the wear caused by the production process. [1] , directly affects the yield of strip products and the quality of subsequent deep-processing products and the smooth progress of deep processing. With the continuous development of cold rolling control technology, a large number of factors affecting the shape of the plate, such as the shape of the incoming material, the cross-sectional shape of the incoming material, bending roll shifting, strip deviation, machine configuration, and rolling mill stiffness, have been made. In-depth research can get very high-precision control [2] , however, little research has been done on the roll ta...

AI Technical Summary

Problems solved by technology

With the continuous development of cold rolling control technology, a large number of factors affecting the shape of the plate, such as the shape of the incoming material, the cross-sectional shape of the incoming material, bending roll shifting, strip deviation, machine configuration, and rolling mill stiffness, have been made. In-depth research can get very high-precision control [2] , however little research has been done on the roll taper problem

In the past, scholars mainly described the flatness problem caused by the roll taper caused by poor grinding of the roll and its solution strategies qualitatively. At the enterprise site, it almost completely relied on the experience of the operator, and it was impossible to achieve conscious quantitative control.

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