Control method of alternative pressure of side guides of hot strip mill coiler

Abstract

The invention relates to a control method of alternative pressure of side guides of a hot strip mill coiler, the driving side and the operating side of the side guides are alternatively controlled by adopting a position model and a pressure model, and the technical scheme of controlling by the prior position model only is changed. The invention greatly reduces the pressure oscillation at two sidesof the side guides because of alternative pressure control, obviously reduces the convolute movement defect, can adapt to the coiling of various thick and thin specifications of band steel, and can lead the pressure at two sides of the side guides to keep consistently balance, thereby ensuring the symmetry of the abrasion of the two side guides.

Description

technical field [0001] The invention relates to the field of metallurgical industry, and more specifically relates to a side guide plate alternate pressure control method of a hot rolling coiler. 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 it bites in, and to apply a certain clamping force to the strip steel after the strip steel head bites in, so as to Ensure that the end face of the steel coil is neat, and prevent edge damage, edge overflow and layer-staggered defects. Referring to FIG. 1 , the side guide plates of the hot rolling coiler in the figure are driven by a motor 33 to drive a worm mechanism 32 and a rack and pinion mechanism 31 to push the side guide plates 34 and 35 to open and close. The side guide plate of the hot rolling coiler adopts the position control method, that is, the system only controls the position of the side guide plate, and t...

AI Technical Summary

Problems solved by technology

[0010]2. Unable to guarantee stable side guide plate clamping force;

[0012]3. Heavy operating load;

[0014]4. Asymmetric clamping force will cause uneven wear of the guide plates on both sides;

[0016]5. Cannot adapt to the influence of strip width change on clamping force;

On the one hand, this problem is likely to cause edge damage defects in thin-gauge strip steel; on the other hand, this problem will also lead to accidents where the tail of thick-gauge strip steel is pinched by the guide plate

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