Research on Optimization of Strip Steel Process Parameters Based on Random Forest Model

Aiming at the problem that it is difficult to accurately model the complex nonlinear relationship between process parameters and hardness in continuous annealing process of cold-rolled strip steel, a data-driven optimization method based on random forest regression model is proposed in this paper. Firstly, Pearson correlation coefficient analysis was used to quantify the correlation between process parameters and hardness, and the key influencing factors such as fast cooling furnace temperature, carbon content and soaking furnace temperature were identified. Secondly, a random forest regression model is established, and the prediction performance of the model is improved by grid search optimization. Finally, the data are preprocessed (including Z-score standardization and outlier processing), and the validity of the model is verified based on simulation experiments. The results show that the mean square error (MSE) of the optimized model on the test set is 285.97, and the coefficient of determination (R²) is 0.384, which can better predict the hardness of the strip. This method provides theoretical support and decision-making basis for iron and steel enterprises to optimize production process and improve product quality.