Abstract：High manganese steel has good strength, ductility and wear resistance, and is widely used in energy, transportation, engineering machinery and other fields. Using continuous casting instead of traditional mold casting to produce high manganese steel can significantly improve production efficiency, and thus has been attracted the attention of metallurgical enterprises. However, there are still some problems in the continuous casting production of high manganese steel, such as poor castability and frequent strand defects, and these problems seriously restrict the continuous casting production of high manganese steel with high efficiency and high quality. Based on the previous research works of domestic and foreign researchers, the basic research on solidification characteristics and the practice of continuous casting of high manganese steel are reviewed. Firstly, the effects of composition on Fe-Mn, Fe-Al binary phase diagram, Fe-Mn-C, Fe-Al-C ternary phase diagram and Fe-Mn-Al-C quaternary phase diagram are introduced. The effects of high manganese steel composition on the thermophysical parameters, such as solidus and liquidus temperature, density and thermal conductivity as well as solidification structure and precipitations are all analyzed. Then, combined with the production practice of high manganese steel continuous casting, the design and optimization of mold flux, cooling process and reduction process of high manganese steel continuous casting are introduced. Although some high manganese steels have been successfully produced by continuous casting instead of mold casting, the quality defects of continuous casting strand have not been fully solved, especially the continuous casting production of high manganese and high aluminum steels still faces considerable difficulties. In the future, in-depth research on solidification characteristics of high manganese should be continued, and dedicated continuous casting process design and development should be carried out based on the solidification characteristics of high manganese steel to achieve precise control of high manganese steel continuous casting and ensure efficient and high-quality production of high manganese steel continuous casting.
罗森, 朱苗勇. 高锰钢凝固特性及连铸工艺研究现状[J]. 钢铁, 2023, 58(9): 39-58.
LUO Sen, ZHU Miaoyong. State of art on solidification characteristics and continuous casting process of high manganese steel[J]. Iron and Steel, 2023, 58(9): 39-58.
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