Effect of casting speed on dendrite arm spacing of Mn13 steel continuous casting slab
Jian‑min Li1,2,3, Mao‑fa Jiang1,3, Jun‑xiang Ning1,3, Jun Zhai2
1 Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), Northeastern University, Shenyang 110819, Liaoning, China 2 Shanxi Taigang Stainless Steel Co., Ltd., Taiyuan 030003, Shanxi, China 3 School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
Effect of casting speed on dendrite arm spacing of Mn13 steel continuous casting slab
Jian‑min Li1,2,3, Mao‑fa Jiang1,3, Jun‑xiang Ning1,3, Jun Zhai2
1 Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), Northeastern University, Shenyang 110819, Liaoning, China 2 Shanxi Taigang Stainless Steel Co., Ltd., Taiyuan 030003, Shanxi, China 3 School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
摘要 The dendrite arm spacing in the continuous casting slab of Mn13 steel under different casting speeds was measured using the metallographic microscope. Meanwhile, a heat transfer model was established by the Pro-cast software. The relationship between the dendrite arm spacing and casting speed in continuous casting slab of Mn13 steel was studied and described by a function expression. The results provide an important theoretical basis for the development and optimization of continuous casting production process of high-manganese steel and help to improve the quality of continuous casting slab of high-manganese steel. Under the experimental conditions, the suitable casting speed is about 0.9 m/min. The secondary dendrite spacing maintains a relatively stable low-amplitude increase trend, and it is beneficial to obtain a higher proportion of equiaxed crystals.
Abstract：The dendrite arm spacing in the continuous casting slab of Mn13 steel under different casting speeds was measured using the metallographic microscope. Meanwhile, a heat transfer model was established by the Pro-cast software. The relationship between the dendrite arm spacing and casting speed in continuous casting slab of Mn13 steel was studied and described by a function expression. The results provide an important theoretical basis for the development and optimization of continuous casting production process of high-manganese steel and help to improve the quality of continuous casting slab of high-manganese steel. Under the experimental conditions, the suitable casting speed is about 0.9 m/min. The secondary dendrite spacing maintains a relatively stable low-amplitude increase trend, and it is beneficial to obtain a higher proportion of equiaxed crystals.
Jian‑min Li,Mao‑fa Jiang,Jun‑xiang Ning, et al. Effect of casting speed on dendrite arm spacing of Mn13 steel continuous casting slab[J]. Journal of Iron and Steel Research International, 2020, 27(6): 665-672.
2020, Vol. 27 
