Study on the Electroslag Remelting of Bearing Steel in Static Magnetic Field

摘要：

　　The Electroslag Remelting(ESR)Process has been developed quickly in recent years for its productions of excellent metal ingots with high purity,compact structure,homogeneous composition and clean surface.However,some problems in traditional ESR process still exist,for example the nonmetallic inclusions,coarse dendrite crystal and solute segregation in large-scale ESR etc.In this study we combine the ESR process with electromagnetic processing of materials(EPM)process in GCr15 steel under conditions of 400-700 amps current.The microstructure and inclusions analysis showed that,the inner structure of ingots is compact and homogeneous and no remarkable inclusions appear when superimposing static magnetic field simultaneously.Refined branch grain size,homogeneous distribution of solute,decreased concentration of inclusions and impurities and elevated hardness also could be achieved.ESR process under steady magnetic field makes melt pool planer when compared with that without magnetic field,which would be explained by the electromagnetic vibration refined metal melting drops and the temperature field in the pool is uniformity.

关键词： ESR steady magnetic field electromagnetic vibration refined droplet refined grain

作者: FENG Mei-long Zhong Yun-bo Wu Qiu-fang Chen Guang Lei Zuo-sheng Ren Wei-li Ren Zhongming

作者单位: Shanghai Key Laboratory of Modern Metallurgy and Material Processing,Shanghai University,Shanghai 200072,China

会议类型: 国际会议

会议名称: The 7th International Conference on Electromagnetic Processing of Materials(第七届冶金与材料电磁过程国际大会)

会议地点: 北京

会议语种:英文

页码: 1-6

在线出版日期: 2012-10-22（万方平台首次上网日期，不代表论文的发表时间）