气体保护电渣重熔过程氧传递的动力学研究

特殊钢 ›› 2013, Vol. 34 ›› Issue (2): 11-15.

气体保护电渣重熔过程氧传递的动力学研究

史成斌¹，郭汉杰¹，陈希春²，孙晓林¹，傅杰¹

1. 北京科技大学冶金与生态工程学院，北京 100083；
2. 钢铁研究总院高温材料研究所，北京 100081；

收稿日期:2012-11-02 出版日期:2013-04-01 发布日期:2022-09-30
通讯作者: 郭汉杰
作者简介:史成斌(1982-)，男，博士研究生,2009年北京科技大学硕士研究生毕业，电渣重熔过程钢和镍基高温合金的洁净化与凝固组织控制研究。
基金资助:
国际科技合作与交流专项项目，项目名称：“高洁净低偏析超大锭型电渣重熔精炼技术设备及工艺引进”(项目编号：2010DFR50590)

Kinetic Study of Oxygen Transfer during Protective Gas Electroslag Remelting Process

Shi Chengbin¹ , Guo Hanjie¹ , Chen Xichun² , Sun Xiaolin¹ , Fu Jie¹

1. School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 ；
2. Research Institute for High Temperature Materials, Central Iron and Steel Research Institute, Beijing 100081

Received:2012-11-02 Published:2013-04-01 Online:2022-09-30
Contact: Guo Hanjie

摘要/Abstract

摘要： 基于渗透理论建立了气体保护电渣重熔过程渣-钢间氧传递的动力学模型,并在50 kg电渣炉进行模具钢S136(/%:0.39C、0.26Si、0.43Mn、0.020P、0.018S、13.37Cr、0.21Mo、0.34V)的重熔实验,得出渣中FeO含量-0～2.0%(FeO),电极端部钢液中原始氧含量-0～0.010 0%[O],自耗电极半径-40～300 mm和重熔速率-(0.5～5.0)×10^-6 m³/s对熔渣和钢液间传氧速率的影响。结果表明,熔渣中FeO含量-(FeO)存在一个临界值,(FeO)小于此临界值时,氧的传递过程为电极端部钢液向渣中传递;反之,氧的传递过程为渣中FeO向电极端部钢液内传递。随自耗电极半径的增加,钢-渣间传氧速率减小;随着重熔速率和钢液中原始氧含量增加,钢-渣间传氧速率增加。

关键词: 气体保护电渣重熔, S136模具钢, 氧, 传递速率, 动力学

Abstract: Based on the penetration theory, a kinetic model for oxygen transfer between molten slag and liquid steel (luring protective gas electroslag remelting process is established, and remelting test of die steel S136 (/% : 0.39C, 0.26Si, 0.43Mn, 0.020P, 0.018S, 13.37Cr, 0.21Mo, 0.34V) by a 50 kg electroslag remelting unit is carried out to get the effect of FeO content in slag - 0 ~ 2.0% (FeO), original oxygen content in liquid steel at the electrode tip- 0 ~ 0.010 0% [ 0] , radius of electrode -40 ~300 mm and remelting rate- (0.5 - 5.0) x 10^-6m³/s on transfer rate of oxygen between molten slag and liquid steel. The results show that there is a critical value of (FeO) , as FeO content in slag is lower than the value, the oxygen transfer process is from liquid steel at electrode tip to molten slag, whereas as FeO content is higher than that value, the oxygen transfer process is from molten slag to liquid steel at electrode tip； with increasing the radius of electrode, the liquid steel-molten slag oxygen transfer rate decreases, and with increasing the melting rate and the initial oxygen content in liquid steel, the liquid steel-molten slag oxygen transfer rate increases.

Key words: Protective Gas Electroslag Remelting, S136 Die Steel, Oxygen, Transfer rate, Kinetics

史成斌, 郭汉杰, 陈希春, 孙晓林, 傅杰. 气体保护电渣重熔过程氧传递的动力学研究[J]. 特殊钢, 2013, 34(2): 11-15.

Shi Chengbin , Guo Hanjie , Chen Xichun , Sun Xiaolin , Fu Jie. Kinetic Study of Oxygen Transfer during Protective Gas Electroslag Remelting Process[J]. Special Steel, 2013, 34(2): 11-15.

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