Hot rolling coiler side guide plate control method capable of improving coiling quality

Abstract

The invention relates to the technical field of hot coiling, in particular to a hot rolling coiler side guide plate control method capable of improving coiling quality, which comprises the following steps: carrying out primary short stroke when the head of strip steel reaches the middle position of the parallel section of a side guide plate, and carrying out secondary short stroke when a pinch roll bites steel; when the coiling block bites steel, the side guide plate carries out position allowance, the side guide plate with the remaining pressure allowance carries out strip steel clamping on the two sides, when the pressure reaches P% of the second-stage set pressure, one side of the side guide plate is fixed and is changed into position control, and the other side of the side guide plate carries out pressure control to clamp the strip steel; when the clamping is stable, the side guide plate is changed into position control. The problems of over-clamping, under-clamping, staggered-layer rolling and the like of the side guide plate during hot rolling are solved, and meanwhile, equipment damage caused by abnormal width of strip steel can be avoided.

Description

technical field [0001] The invention relates to the technical field of hot coil rolling, in particular to a method for controlling a side guide plate of a hot rolling coiler which can improve the coil quality. Background technique [0002] The hot-rolled coiling side guide plate is composed of a bell mouth and a parallel section. It corrects the strip head to guide the strip into the pinch rolls, and controls the strip by pressure clamping to ensure the coil shape. When the side guide plate works, it adopts the secondary set pressure control. When producing thin-gauge strip steel, the side guide plate will clamp the strip steel according to the secondary set pressure after a short stroke. However, due to temperature changes, plate shape changes, and tension changes If the deformation resistance of the strip is reduced due to other reasons, the actual pressure of the side guide plate will become smaller and cannot reach the set pressure, so the side guide plate will always be...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the side guide plate in the prior art affects the coil quality, the present invention provides a method for controlling the side guide plate of a hot rolling coiler that can improve the coil quality, and adopts pressure and position dual-mode control, which can solve the problem of the side guide plate in the production process. The phenomenon of poor coil shape caused by under-clamping or over-clamping of the strip, and can reduce the damage to the equipment caused by the sudden change of the strip width

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