Abstract：The poor internal quality of No.80 steel billet was analyzed, it was found that the magnetic induction strength of the final electromagnetic stirring (FEMS) was weak itself, which was difficult to meet the needs of the final stirring metallurgy. In order to make up for the lack of FEMS strength, the pulling speed was increased from 2.6 to 2.7 m/min, and the specific cooling water volume was reduced to 90% of the original process. The solidification heat transfer model showed that the liquid core thickness at the FEMS position was increased from the original 47.6 to 52.8 mm. The test result showed that no obvious defects were found on the pickled surface of billet, and the macroscopic structure quality was greatly improved, and the carbon segregation index range was reduced from the original 0.96-1.09 to 0.97-1.02. The internal quality of billet was significantly improved.
马建民. 80号钢连铸坯末端电磁搅拌优化与实践[J]. 中国冶金, 2021, 31(2): 72-75.
MA Jian-min. Optimization and practice of final electromagnetic stirring of No.80 steel continuous casting billet[J]. China Metallurgy, 2021, 31(2): 72-75.
2021, Vol. 31 
