Effect of PMO on dendrite structure and carbon segregation of cast billet of SWRCH35K cold heading steel
In order to solve steel SWRCH35K cold heading steel slab dendritic structure fluctuation problem such as bulky and carbon segregation of the Wuhu Xinxing Pipes Co.,Ltd.,using advanced solidification technology named Pulsed Magneto-Oscillation,PMO invented by Center of Advanced Solidification Technology of Shanghai University which has developed for many years to intervene the solidification process in the continuous casting process of the steel.When PMO is applied to SWRCH35K cold heading steel without changing the existing continuous casting process conditions,the cylindrical to equiaxed crystal transformation(CET)process is advanced,the primary den-drite refining is obvious,the maximum radial carbon segregation index decreases from 1.12 to 1.06,and the range value decreases from 0.184 to 0.121.The results show that PMO can improve the overall quality of SWRCH35K cold heading steel billet under the existing continuous casting process conditions.
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