Method for setting up optimized width of rough rolling strip steel

Abstract

A method for designing width of rough rolling strip steel includes applying short time mode of fine rolling natural broad-siding to calculate out natural broad-siding of fine rolling then confirming natural broad-siding allowance according to heat rolling width and prediction accuracy of fine rolling natural broad-siding, finally confirming design value of rough rolling width of current strip steel according to width allowance and natural broad-siding of fine rolling.

Description

technical field [0001] The invention relates to forming processing of hot-rolled strip steel, in particular to a method for optimally setting the width of rough-rolled strip steel during the width control process of hot-rolled strip steel. Background technique [0002] Width is an important technical index of hot-rolled products. The width requirement of hot-rolled products does not have a negative tolerance. Once the actual width of the product is smaller than the required width of the finished product, the product will be rejected. [0003] The general hot rolling production process includes rough rolling and finish rolling two process sections. The rough rolling process section has vertical roll reduction equipment, that is, it has the control function of width reduction, so the strip width control function is mainly in rough rolling. However, after the strip steel leaves the roughing mill and enters the finishing mill, the width of the strip steel in the finishing rollin...

AI Technical Summary

Problems solved by technology

[0024] Since there are many factors affecting the natural width of the hot-rolled strip finish rolling, the natural width of the finish rolling is related to various factors such as equipment status, strip steel type, and rolling process in the actual production process, and even to the operation of the operator. Habits also have a certain relationship, and these influencing factors are mutually coupled, nonlinear and time-varying. Therefore, there is a large error between the natural width of the finish rolling determined by the above traditional method and the actual production situation, and the rough rolling width The setting process has a great impact. In order to prevent the negative tolerance of the strip width, the setting of the rough rolling width often adopts a large control margin. The rough rolling width setting process also requires a lot of intervention by the operator. Relatively large, it is easy to cause problems such as unqualified width index of hot-rolled strip steel, excessive width margin, unstable production process, etc.

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