Thin slab continuous casting and rolling roll gap value dynamic self-adaptive control method

Abstract

The invention relates to a thin slab continuous casting and rolling roll gap value dynamic self-adaptive control method. The thin slab continuous casting and rolling roll gap value dynamic self-adaptive control method comprises steps that acquisition and normalization processing of production technology parameters of a continuous casting production line are carried out to acquire a data matrix; the dimension reduction decoupling of the normalized data matrix is carried out to establish a characteristic database; a part of historical data is extracted from the characteristic database to establish a training sample set, and a corresponding prediction model is established; a prediction sample set is substituted into the prediction model, and data processing is carried out to acquire a predicted roll gap value; by using the predicted roll gap value, adjustment is carried out until an actual roll gap value is equal to the predicted roll gap value, and the thin slab continuous casting and rolling roll gap value dynamic self-adaptive control is completed. By taking big data analysis as a core, timeliness and roll gap value adjustment prediction precision are improved, and a production process is improved, and production costs are reduced.

Description

technical field [0001] The invention belongs to the technical field of continuous casting production, and in particular relates to a dynamic self-adaptive control method for thin slab continuous casting and continuous rolling roll gap value. Background technique [0002] Continuous casting technology is a cutting-edge technology in the field of metallurgy and materials. It integrates continuous casting, rolling, and heat treatment to cast billets and form industrial products at one time after online rolling. This process simplifies the production process and greatly The production cycle has been greatly reduced, the equipment investment has been reduced, and the product quality has been improved, so it has been widely used in the domestic metallurgical industry. However, in the production process, the process parameter of the roll gap value plays a vital role in product quality. , so the research on the roll gap value is particularly important. [0003] The solidification a...

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Problems solved by technology

[0003] The solidification and shrinkage of the slab is a complex change process. In this process, the roll gap values ​​of each frame are not the same. Affected by the mechanical properties of the frame, the thickness accuracy and product quality of the slab are also affected. In the previous adjustment of the roll gap value, it was mainly carried out by using a computer to establish a metallurgical model for simulation and experience adjustment. The traditional computer metallurgical model has been unable to meet the modern continuous casting production due to its inherent defects such as poor precision and low timeliness. process, and the accuracy of the computer simulation model is not high, which determines that it cannot guarantee the simulation accuracy and reduces the work efficiency. The experience adjustment increases the human factors and affects the quality of the casting

[0004] The traditional roll gap adjustment method cannot meet the needs of continuous casting production, so a simple and feasible control method that minimizes human intervention is needed to improve the thickness accuracy and product quality of the slab

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