Cold rolling mill flying shear control method

Abstract

The invention relates to a cold rolling mill flying shear control method, and belongs to the technical field of control equipment or methods special for metal rolling mills or machining products thereof. The method comprises the following steps that a pinch roller, a magnetic force belt and a reeling machine are started, and corresponding operation speeds are set; 2) when the pinch roller reachesthe set operating speed, an upper roller and a lower roller of the pinch roller are operated by means of the pinch roller; 3 ) if the pressure value is reached between the upper roller and the lower roller of the pinch roller, the magnetic force belt reaches the operating speed, when the reeling machine reaches the operating speed, and a flying shear shears a strip steel; 4 ) a strip head of the pinch roller is used for clamping the tape; the pinch roller is used for clamping a strip head to complete the strip threading, the magnetic force belt is used for adsorbing the strip head, the strip head is feed into the reeling machine and a wrapper; and 5) after the wrapper rolls up the strip steel to establish the tension, the sub-rolling process is completed, and the next sub-rolling action iswaited. Three necessary conditions are provided for whether the action is implemented before the shearing action of the flying shears, the sub-rolling risk of the rolling mill outlet is greatly reduced, and the rolling mill production accident caused by the sub-rolling failure is reduced.

Description

technical field [0001] The invention relates to a method for controlling flying shears of a cold rolling mill, and belongs to the technical field of control equipment or methods specially suitable for metal rolling mills or processed products thereof. Background technique [0002] At present, in the cold-rolled continuous rolling production line in which the finished product is steel coils, the production line performs strip-splitting control when the production line is running at a low speed, so as to realize the continuous production of the rolling mill. In order to achieve stable operation of the export equipment, the strip steel can be cut smoothly without stopping the machine, and the strip head is sent between the coiler and the coiler to complete the coiling action. The pinch rollers, flying shears, magnetic belts, The control of export equipment such as winding belts and coilers puts forward quite high requirements. According to the existing technology, the strip we...

AI Technical Summary

Problems solved by technology

When the continuous production of the rolling mill is realized in this way, the strip may accumulate in front of the pinch roller, the strip head stops in the flying shear area, the strip head is adsorbed on the magnetic belt and piled up between the flying shear and the magnetic belt, and the strip builds Faults that interrupt continuous production such as breakage during the stretching process

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