A side guide deviation correction control method for a hot-rolled strip coiler

Abstract

The invention discloses a method for side guide deviation correction control of a hot-rolled strip coiler. The pressure on the side guides is zero. When the strip steel head enters between the two side guide plates, perform the first short stroke of closing the side guide plates, so that the distance between the two side guide plates is Wo1, and execute the second short stroke of closing the side guide plates after the strip steel head exits the side guide plates. Make the distance between the guide plates on both sides Wo2. From the loading of the pinch roller of the coiler to the end of loading, the pressure values ​​of the guide plates on both sides are respectively accumulated, the position control side A and the pressure control side B are selected and the pressure is controlled, and the edge-seeking conversion is repeated until the end of the edge-seeking. By adjusting the pressure of the pressure control side B, the pressure value of the position control side A is kept constant, and the wear of the strip edge and the side guide plate is greatly reduced under the condition of ensuring the strip edge alignment, and the strip edge folding and edge scratching are prevented. It has practical and popularization value.

Description

technical field [0001] The invention relates to a control method, in particular to a control method for correcting deviation of a side guide of a hot-rolled strip coiler in a strip hot-rolling process. Background technique [0002] The main function of the side guide plate in the hot rolling coiler in the metallurgical industry is to center the strip steel before the strip steel bites in, and to control the set pressure on one side after the strip steel bites in, and select the position on the other side Control to ensure that the end faces of steel coils are neat and prevent defects such as edge damage and stacking faults. The side guide of the hot rolling coiler is driven by 4 oil cylinders, and pressure sensors and position sensors are installed in the oil cylinders. The side guide is opened and closed by driving the oil cylinder through the servo valve table. [0003] Each side of the side guide is opened to the preset width before tapping from the rolling mill, and th...

AI Technical Summary

Problems solved by technology

When rolling thin-gauge strip steel, when the set pressure is small (such as 6KN), it will cause the actual control pressure of the side guide to fluctuate between 2KN-10KN, either causing poor strip centering effect to repair, or excessive Centering, resulting in roll-shaped folding accidents, causing the entire coil of steel to be scrapped

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