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Study on the Effect of Continuous Annealing Process on Mechanical Properties of Cold Rolled Strip Steel
Abstract
The aim of this study is to investigate the influence of each parameter on the mechanical properties of strip steel in the continuous annealing process of cold rolled strip steel. The influence of each parameter on the hardness of strip steel was systematically analysed by collecting the specification data, process parameters and performance index data of the strip steel products, and applying descriptive statistical analysis, Spearman correlation coefficient analysis, random forest regression and factor analysis. The results show that carbon content, quenching furnace temperature, homogenising furnace temperature and fast cooling furnace temperature are the key factors affecting the hardness of strip steel. Among them, carbon content and quenching furnace temperature showed a significant positive correlation with hardness, while the average heating furnace temperature and fast cooling furnace temperature showed a significant negative correlation with hardness. These findings provide an important theoretical basis for optimising the production process of cold rolled strip steel, which helps to improve the product quality and the economic benefits of enterprises.
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