Development and Application of Key Generic Technologies for Electromagnetic Regulation in Large-Sized Metal Billet Preparation

doi:10.12068/j.issn.1005-3026.2025.20250081

Abstract

Abstract:

Large-sized high-performance metal products serve as the foundation and precursor for the development of high-end equipment manufacturing industries. However， traditional preparation methods for large-sized casting billets in China commonly suffer from casting defects such as inclusions， segregation， coarse grains， and cracks， leading to issues like low metallurgical quality and poor yield. These problems render the billets unable to meet the processing and manufacturing requirements of large-sized high-end metal products. Therefore， developing new metallurgical quality control technologies for large-sized casting billets and overcoming challenges in achieving purification， homogenization， grain refinement structure， and low-stress casting are effective pathways to break through these bottlenecks. After over two decades of collaborative research， industry， and academia cooperation and practical application， by utilizing the unique effects of electromagnetic fields during large-sized billet preparation， Northeastern University has precisely controlled the solidification behavior during the preparation process and accomplished a full-chain innovation in electromagnetic control technologies.It has established an electromagnetic control theory for large-sized metal billet preparation and developed core electromagnetic control technologies and equipment. These advancements have successfully produced a series of large-sized and high-quality steel and magnesium alloy， as well as aluminum alloy billets， driving progress in the preparation technologies of high-end materials.

Key words: large-sized billet, metallurgy, electromagnetic field, cleaning, grain refinement, homogenization

CLC Number:

TG 113

Qiang WANG, Qi-chi LE, Xiang-jie WANG. Development and Application of Key Generic Technologies for Electromagnetic Regulation in Large-Sized Metal Billet Preparation[J]. Journal of Northeastern University(Natural Science), 2025, 46(7): 131-138.

Figures/Tables 9

Fig.1 Three-dimensional numerical simulation of multiphase,multiscale,and multifield coupling for large-sized billets [16-17]

Fig.2 Practical effects of electromagnetic control theory for large-sized metal billets

Fig.3 Intelligent electromagnetic braking technology [22]

Fig.4 Electromagnetic swirling flow nozzle technology [23-24]

Fig.5 Temperature field distribution in semi-continuous casting with and without electromagnetic field [23-24]

Fig.6 Multistage electromagnetic stirring technology [25]

Fig.7 Differential phase electromagnetic oscillation technology [26-27]

Fig.8 Flow field distribution in semi-continuous casting with and without electromagnetic field [26-27]

Fig.9 Electromagnetic control equipment for large-sized metal billets

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