ISSN：1003-8620

CN：42-1243/TF

主管：中信泰富特钢集团股份有限公司

主办：大冶特殊钢有限公司

特殊钢 ›› 2014, Vol. 35 ›› Issue (3): 29-32.

所属专题： 稀土冶金

• 工艺技术 • 上一篇    下一篇

Fe-20Cr-5Al不锈钢加稀土元素La合金化工艺对La收得率的影响

余晓艳，刘建华，杨波锋，郭军儒，韩志彪   

  1. 北京科技大学冶金工程研究院，北京100083
  • 收稿日期:2013-12-18 出版日期:2014-06-01 发布日期:2022-08-29
  • 通讯作者: 刘建华
  • 作者简介:余晓艳(1987-),女，硕士研究生(北京科技大学),2011年北京科技大学(本科)毕业，洁净钢和不锈钢研究。
  • 基金资助:
    国家自然科学基金项目资助(51374023)

Effect of Adding Rare Earth Element La Alloying Process for Stainless Steel Fe-20Cr-5Al on Yield of La

Yu Xiaoyan, Liu Jianhua, Yang Bofeng, Guo Junru ， Han Zhibiao   

  1. Engineering Research Institute, University of Science and Technology, Beijing 100083
  • Received:2013-12-18 Published:2014-06-01 Online:2022-08-29

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摘要： 研究了50kg真空感应炉+电渣重熔工艺冶炼Fe-20Cr-5Al不锈钢(/%:0.004~0.006C,0.18Si,0.08Mn,20.25~20.28Cr,5.06~5.17Al)时的加La合金化方法对La回收率的影响。结果表明,采用真空感应炉熔炼(VIF)Fe-20Cr-5Al母合金+稀土氧化物La2O3(/%:50CaF2-20CaO-30La2O3)电渣重熔(ESR)La合金化时,钢中La的平均含量为0.003%,加稀土氧化物电渣重熔La合金化不明显;真空感应炉母合金La合金化(含0.38%La)+70%CaF2-30%Al2O3电渣重熔后钢中平均La含量为0.066%;真空感应炉母合金La合金化(含0.34%La)+50%CaF2-20%CaO-30%La2O3电渣重熔后钢中平均La含量为0.032%,说明含La母合金在电渣重熔过程La烧损较大,但30%Al2O3较30%La2O3更有利降低母合金在电渣重熔过程中La的烧损。

关键词: Fe-20Cr-5Al不锈钢, 稀土元素La , La2O3 , Al2O3, 电渣重熔, 合金化

Abstract: The effect of adding La alloying methods on yield of La in stainless steel Fe-20Cr-5Al (/%: 0. 004 ~ 0. 006C, 0. 18Si, 0. 08Mn, 20.25 ~ 20. 28Cr, 5. 06 ~5. 17Al) melting by 50 kg vacuum induction furnace + electroslag remelting process has been studied. Results show that with vacuum induction furnace (VIF) melting Fe-20Cr-5Al electrode (parent alloy) + rare earth (RE) oxide La2O3 (/%: 50CaF2-20CaO-30La2O3) electroslag remelting (ESR) for La alloying, the average La content in steel is 0. 003%, indicated it is not obvious to La alloying by adding RE oxide during ESR； with VIF La alloying melting ESR electrode (0. 38% La in steel) + 70% CaF2-30% Al2O3 electroslag remelting, the average La content in ESR steel is 0. 066%, and with VIF La alloying melting ESR electrode (0. 34% La in steel) + 50% CaF2- 20%CaO-30La2O3 electroslag remelting, the average La content in ESR steel is 0. 032%, It is indicated that during ESR process of containing La parent alloy the oxidizing loss of La is larger, but as compared 30% La2O3 remelting slag the 30% Al2O3 remelting slag is more favorable to decrease the oxidizing loss of La in-parent alloy during ESR process.

Key words: Fe-20Cr-5Al Stainless Steel, , Rare Earth Element La, La2O3, Al2O3, ESR, Alloying

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