Position control device and control method for free loop of thin strip continuous casting strip steel

Abstract

The invention relates to a position control device and a position control method for a free loop of thin strip continuous casting strip steel. A driving guide roller is fixed on a base through a bearing seat; a chain wheel is arranged at one end of the driving guide roller and is connected with a driving motor through a transmission chain; two groups of first rocker arms are arranged at two ends of the driving guide roller; one side of each first rocker arm is connected with the driving guide roller, and the other side of each first rocker arm is connected with a driven guide roller; the first rocker arms vertically swing around the driving guide roller under the drive of hydraulic cylinders; a driven guide roller is fixed on the first rocker arms and connected with second rocker arms; the second rocker arms vertically swing around the driven guide roller under the drive of hydraulic cylinders; and a plurality of driven guide rollers are arranged on the second rocker arms. The device and the method are suitable for detecting and controlling the free loop of the casting strip steel; and a detecting instrument detects the position of a casting strip on a guide roller way, and the curvature of a guide profile of the casting strip is adjusted simultaneously, so that the curved shape of the guide profile is consistent with that of the casting strip, and the casting strip is attached to a guide device and walks stably.

Description

technical field [0001] The invention relates to the technical field of continuous casting technology and equipment in the metallurgical industry, in particular to a free looper position control device and control method for thin strip continuous casting strip steel. Background technique [0002] A typical example of twin roll strip casting technology is figure 1 As shown, the molten steel is poured directly into a molten pool surrounded by two relatively rotating cooling rolls 1a, 1b and side sealing plates 2a, 2b that can be cooled rapidly. It is cooled and solidified, and then forms a solidified shell and grows gradually, and then is squeezed together at the smallest gap between the two cooling rollers 1a and 1b to form a cast steel strip 4, which is guided to the looper guide roller 12 through the guide plate 5 and pinch roll 6, and form a looper 3 between the looper guide roll 12 and the cooling roll 1a, 1b, and then rolled into a thin strip by the rolling mill 7, and t...

AI Technical Summary

Problems solved by technology

If the bending radius of the casting strip on the looper guide roller 12 is smaller than the minimum allowable bending radius of the casting strip, the stress generated by the bending of the casting strip exceeds the allowable stress of the material, which may cause transverse cracks on the surface of the casting strip

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