Rough rolling vertical roll shallow pass treatment method

Abstract

The invention discloses a rough rolling vertical roll shallow pass treatment method. The method comprises the steps that a to-be-rolled steel blank is determined from a rolling plan; whether width fixing needs to be conducted on the to-be-rolled steel blank through a width-fixed pressure machine or not is judged, and a judgment result is obtained; the width self-learning function of a rough rolling unit is closed; the first opening degree of a front guide board and the width of a first roll seam of a vertical roll are adjusted, and forward rolling is conducted; in the forward rolling process,the to-be-rolled steel blank is processed according to the judgment result and guided in through the front guide board, and the vertical roll serves as a transition roller way to conduct shallow passtreatment on the to-be-rolled steel blank; the second opening degree of the front guide board and the width of a second roll seam of the vertical roll are adjusted, and inverse rolling is conducted; and in the inverse rolling process, the vertical roll serves as a transition roller way to conduct shallow pass treatment on the to-be-rolled steel blank, and the to-be-rolled steel blank is guided outthrough the front guide board. The rough rolling vertical roll shallow pass treatment method provided by the invention can avoid capacity loss caused by halt production and ensure controllability ofthe width of finished products.

Description

technical field [0001] The invention relates to the technical field of iron and steel smelting, in particular to a rough rolling vertical roll passing method. Background technique [0002] Hot strip rolling refers to the process of producing coiled hot-rolled strip steel with a thickness of 1.2mm to 8mm on a strip hot rolling mill. Strip steel with a width of less than 600mm is called narrow strip steel, and strip steel with a width of more than 600mm is called wide strip steel. There are three types of hot-rolled strip production lines: semi-continuous, three-quarter continuous and fully continuous. [0003] In the semi-continuous and three-quarter continuous hot-rolled strip production lines, faults such as rough rolling vertical roller motors and transmission shafts occur from time to time. When the rough rolling vertical roller motor and transmission shaft fail, in order to avoid the impact of production stoppage on production capacity, rolling can be carried out in an...

AI Technical Summary

Problems solved by technology

[0004] What the present invention aims to solve is the problem that unreasonable setting of process parameters in empty-pass production affects the width control of strip steel, and even causes stacking accidents

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