Opening degree control method of side guide plate of heavy plate mill

Abstract

The invention relates to an opening degree control method of a side guide plate of a heavy plate mill. The opening degree of a side guide plate before rolling is preset according to a rolling method code RS and the size of a plate blank so that the opening degree of the side guide plate before the rolling is preset to a proper position; as for the plate blanks with RS=0, 3 and 4, the preset opening degree of the side guide plate before the rolling is determined according to the width of the plate blanks; as for the plate blanks with RS=1 and 2, the opening degree of the side guide plate before the rolling is set according to the length and the width of the plate blanks; and the opening degree of the side guide plate during the rolling is set according to the length and the width of a steel plate at the time of steel rotation. The opening degree control method solves the problem that the opening degree of the side guide plate influences the rolling speed and sets the opening degree of the side guide plate with the assistance of program calculation; and during the rolling, the side guide plate does not need man adjustment, thereby improving the rolling speed and increasing the productivity of the mill. The production time of each steel plate can be reduced by over 15 s, and the productivity of the mill can be improved by 7 percent.

Description

technical field [0001] The invention relates to the control of a thick plate rolling mill, in particular to the control of the side guide plate of the thick plate rolling mill. Background technique [0002] The thick plate rolling process is a process in which a slab of a certain size is rolled into a steel plate of a certain size. During the rolling process, the steel transfer is completed by the rotating roller table located before and after the rolling mill. Before rolling and after the steel conversion, a rolling mill is required. Rolling can only continue after the front and rear side guide plates are centered. The rolling method used in the rolling process is determined by the size of the slab and steel plate, and is distinguished by RS code. There are 5 rolling methods used by the thick plate rolling mill, as shown in the figure 1 shows: [0003] RS=0 Before rolling, use the side guide plate in front of the rolling mill to center (that is, align the center line of th...

AI Technical Summary

Problems solved by technology

[0021] The object of the present invention is to provide a method for controlling the opening of the side guides of a thick plate rolling mill, which solves the problem that the opening of the side guides affects the rolling rhythm. The opening of the side guides is set by means of program calculations, and the side guides do not need to be manually adjusted during the rolling process. , improve the rolling rhythm and increase the capacity of the rolling mill

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