Thin strip continuous cast loop detection and control method

Abstract

The invention discloses a thin strip continuous cast loop detection and control method. The method comprises the following steps of: installing two sets of infrared loop detectors on the outer arcs of loops along the width direction of a cast strip respectively, detecting accurate loop values of two ends of the cast strip in real time, obtaining the increment of cast strip deviation by comparing the magnitudes of heights of the loops at two ends of the cast strip, and then performing control and adjustment through a loop guiding device so as to prevent the cast strip from cracking due to torsion at the loops and improve the strip quality. By the method, the quantity of the loops can be detected in real time, the cast strip is prevented from cracking due to torsion and deformation under the condition of camber, cast strip deviation and the like by using a loop control mechanism, the quality of the cast strip is improved, and the stability of the cast strip loops is improved.

Description

technical field [0001] The invention relates to a continuous casting process, in particular to a thin strip continuous casting looper detection and control method. Background technique [0002] Twin-roll thin strip continuous casting technology is an advanced short-flow metallurgical process, see figure 1 , this process directly pours molten steel into a molten pool surrounded by two relatively rotating and rapidly cooling casting rolls 1a, 1b and side sealing plates 2a, 2b, and the molten steel is cooled on the rotating peripheral surface of the casting rolls and solidification, and then form a solidified shell and gradually grow and then be squeezed together at the smallest gap between the two crystallization rollers 1a and 1b to form a casting belt 4, which guides the looper guide roller 12 and the pinch roller 6 through the guide plate 5 , and a looper 3 is formed between the looper guide roll 12 and the casting rolls 1a, 1b, and then rolled into a thin strip by the rol...

AI Technical Summary

Problems solved by technology

However, the protection requirements for measuring devices are relatively high.

[0011] In Japanese Patent JP01130847A, a device and method for directly contacting and detecting the looper on the upper part of the looper is also used, and when the looper changes, the position of the looper is adjusted through the guide roller on the upper part of the looper. This method is very good, but The effect of directly tightening the free looper cannot be determined, because the deformation of the strip at this time is more complicated

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