Thin-strip continuous casting molten pool liquid level control method and device based on CCD liquid level detection

Abstract

The invention discloses a thin-strip continuous casting molten pool liquid level control method and device based on CCD liquid level detection, a storage medium and computer equipment. The method comprises the steps of: detecting the liquid level heights of different positions of a molten pool through a CCD liquid level detection system, inputting the liquid level heights of the different positions into a liquid level height data processing model to obtain the real-time liquid level height in the molten pool; respectively inputting the real-time liquid level height and a target liquid level height in the molten pool into a corresponding function between the molten pool liquid level height and the molten steel volume in the molten pool to obtain a real-time molten steel volume and a targetmolten steel volume; acquiring a molten steel volume change rate according to the real-time molten steel volume and the target molten steel volume, and carrying out closed-loop control on the castingspeed of a casting roller according to the molten steel volume change rate during casting; and after the casting roller pulling speed and the real-time liquid level height in the molten pool reach a preset stable state, a process parameter PID controller is adopted for controlling the liquid level height in the molten pool, and the liquid level of the molten pool is kept in the stable state. The method can improve the molten pool liquid level control precision.

Description

technical field

[0001] The invention relates to the technical field of metallurgy, in particular to a method, device, storage medium and computer equipment for controlling the liquid level of a strip continuous casting molten pool based on CCD liquid level detection. Background technique

[0002] Compared with conventional continuous casting, thin strip continuous casting saves multiple processes such as ingot heating, billet opening and multi-pass rolling, saves a lot of labor costs and energy costs, saves the process of ingot milling, reduces The process of cutting the head and tail after hot rolling is eliminated, which improves the yield, and the thin strip continuous casting equipment occupies a small area, is simple and centralized, and the initial investment is small. In addition, the thin strip continuous casting also has unique sub-rapid solidification characteristics, The microstructure is special, the performance is superior, and the thickness of the cast strip ob...

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