中南大学学报（自然科学版）2017，Vol.48Issue(7)：1697-1703,7.DOI:10.11817/j.issn.1672-7207.2017.07.002
抽锭电渣重熔大截面高速钢过程的碳化物偏析控制
Carbide segregation control in electro-slag remelting withdrawal process of large cross-section high-speed steels
摘要
Abstract
Electroslag remelting (ESR) was a predominant method for smelting high-quality high-speed steels,but the molten bath structure of conventional stationary-mould ESR restricts its ability to control carbide segregation.In order to control carbides segregation of large cross section high-speed steels,secondary aerosol cooling was adopted in the electroslag remelting withdrawal process to make the high-speed steel rapid solidification.Molten pool structure of ESR process was obtained by tungsten powder detection and high speed steel carbide quality was evaluated,which can verify the effect of the process.Effect of secondary aerosol cooling on the temperature field of ESR process was analyzed through numerical simulation.The results show that electroslag remelting withdrawal with secondary aerosol cooling technology can significantly decrease the depth of molten bath,reduce the crystallization angle of the metal molten pool,effectively reduce the high speed steel carbide uneven and carbide particles degrees,and carbide qualified rate increases significantly in the same forging process.关键词
高速钢/碳化物/偏析/熔池结构/电渣重熔Key words
high-speed steels/carbides/segregation/molten structure/electroslag remelting分类
矿业与冶金引用本文复制引用
李万明,姜周华,臧喜民,邓鑫,邵青立,谢志彬..抽锭电渣重熔大截面高速钢过程的碳化物偏析控制[J].中南大学学报（自然科学版）,2017,48(7):1697-1703,7.基金项目
国家自然科学基金资助项目(51474126,U1560203,51604149,51674140)(Projects(51474126,U1560203,51604149,51674140) supported by the National Natural Science Foundation of China) （51474126,U1560203,51604149,51674140）
