A Method of Width Model Control Using Roll Gap Value of Side Guide Plate

Abstract

The invention belongs to the technical field of steel rolling and discloses a method for conducting width model control by using a side guide plate roll gap value. The method includes the following steps that outlet and inlet roll gap values obtained after a front side guide plate of a width fixing machine is aligned, a difference value is calculated, under the condition that the difference value is smaller than a preset deviation value X, the average value of the outlet and inlet roll gap values serves as the side guide plate roll gap value; the side guide plate roll gap value is compared with a width measurement value of a front width measurement instrument of the width fixing machine, the absolute value of a difference value is calculated, and under the condition that the absolute value of the difference value is smaller than a preset deviation value Y, the side guide plate roll gap value serves as the actually-measured width value; and the actually-measured width value is compared with a slab benchmark width value, the absolute value of a difference value is calculated, and under the condition that the absolute value of the difference value is smaller than a preset deviation value Z, the actually-measured width value is used for conducting width model control. Due to the fact that the inlet and outlet roll gap values of the guide plate on the aligned side when a slab passes through the front side guide plate of the width fixing machine are collected, the reasonable preset deviation values are set, measured abnormal width values are filtered, and therefore the width model control precision can be effectively improved.

Description

technical field

[0001] The invention relates to the technical field of steel rolling, in particular to a method for controlling the width model by using the roll gap value of a side guide plate. Background technique

[0002] In the hot rolling production process, the width is a very important parameter in the outer dimensions of the strip steel, and the control accuracy of the strip width reflects the product quality of an iron and steel enterprise.

[0003] Usually, the continuous rolling equipment and the matching bandwidth control model are used for automatic control; the width model control independently executes the continuous rolling control process step by step according to a series of parameters such as the incoming slab width and product target setting, and realizes the automatic production of the production line.

[0004] In the prior art, the width of the incoming slab directly affects the width control accuracy. Although the width measuring instrument is install...

Images