Incoloy800H高温耐腐蚀合金电磁软接触连铸技术的实验研究  

Experimental research on soft-contact electromagnetic continuous casting of Incoloy800H alloy

作　　者：王菲[1,2] 王韬[1,3] 许秀杰[1,3] 邓安元[1,3] 王恩刚[1,3] WANG Fei WANG Tao XU Xiu-jie DENG An-yuan WANG En-gang(Key Laboratory of Electromagnetic Process of Materials, Ministry of Education, Northeastern University, Shenyang 110004, Liaoning, China School of Materials Science and Engineering, Northeastern University, Shenyang 110004, Liaoning, China School of Metallurgy, NortheastemUniversity, Shenyang 110004, Liaoning, China)

机构地区：[1]东北大学材料电磁过程教育部重点实验室,辽宁沈阳110004 [2]东北大学材料工程与科学学院,辽宁沈阳110004 [3]东北大学冶金学院,辽宁沈阳110004

出　　处：《连铸》2016年第5期11-16,共6页Continuous Casting

基　　金：国家自然科学基金重点资助项目(50834009);教育部科学技术研究重大项目(311014);中央高校基本科研业务费专项资金资助(N090609001);高等学校学科创新引智计划项目(B07015)

摘　　要：通过分析Incoloy800H合金与碳钢等材质的电导率差异性,以及Incoloy800H合金电磁软接触连铸试验结果,证实了镍铬铁基高温耐腐蚀合金电磁软接触连铸的可行性。采用电磁感应法对切缝式结晶器内的磁场分布进行了测量,得出不同电源功率和磁场频率对磁场大小和分布的影响效果,从而选取出适当的电磁参数进行了Incoloy800H电磁软接触连铸对比试验。试验结果表明,当电源功率为66 k W,频率为20 k Hz时,铸坯表面质量明显提高,表面振痕明显减轻,凹陷和表面裂纹等缺陷消失。当电源功率增加至100 k W时,铸坯表面质量下降,出现了波浪状振痕和切缝棱边。Through analyzing the difference of electric conductivity characteristics between Incoloy800 H alloy and carbon steels,and the experimental results of soft-contact electromagnetic continuous casting（SCEMCC） of Incoloy800 H alloy billet,the feasibility of Fe- Ni- Cr based alloy SCEMCC was confirmed. The distribution of magnetic field in the mold was examined using a magnetic probe of the induction coil type. The test results show that the magnetic flux density increases with the increasing of the electric power,and decreases with the increasing of the frequency. The experiment results show that the surface quality of Incoloy800 H alloy billet is greatly improved by SCEMCC when the electric power and frequency comes to the optimal ones. The oscillation marks can be totally suppressed and the surface defects disappear with the electric power of 66 k W and the frequency of 20 k Hz. However,when the power exceed the optimal value,the wavy oscillation marks are formed,due to the non-homogeneity of magnetic field between slit center and segment center.

关 键 词：Incoloy800H耐腐蚀合金 电磁软接触连铸 振痕 

分 类 号：TG249.7[金属学及工艺—铸造]