About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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AI/Data Informatics: Computational Model Development, Verification, Validation, and Uncertainty Quantification
|
Presentation Title |
Prediction of Nitrogen Content in Converter Based on an LLE-RF Model |
Author(s) |
Xianwu Zhang, Mingmei Zhu, Chenghong Li, Zhengjiang Yang |
On-Site Speaker (Planned) |
Xianwu Zhang |
Abstract Scope |
The precise prediction of nitrogen content in the steelmaking process of high-nitrogen stainless steel has a significant impact on product quality. In the paper, the Locally Linear Embedding (LLE) - Random Forest (RF) model has been proposed to predict the nitrogen content for an 80-ton converter. The thermodynamic and kinetic mechanisms of nitrogen dissolution in the converter are used as a guide. The LLE algorithm is applied for dimensionality reduction and feature extraction. Five machine learning models, including Extreme Learning Machine (ELM), Random Forest (RF), Gradient Boosting Decision Tree (GBDT), Support Vector Machine (SVM), and Back Propagation Neural Networks (BPNN), are utilized to establish nitrogen content prediction models. The RF model, which achieved the highest hit ratio, is selected for further modeling. After optimizing the model's hyperparameters, the model is tested using actual production data. The prediction accuracy of the model achieves a hit ration of 91.9% within a deviation range of ±0.015%. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, Other, Other |