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 ›› 2010, Vol. 31 ›› Issue (1): 43-45.

• 工艺技术 • 上一篇    下一篇

纯铁电渣重熔的碳•硫控制

赵昱臻1,2,任学平1,包卫平1, 王新宇2,苗晓2   

  1. 1北京科技大学材料科学与工程学院,北京100083;
    2太钢不锈钢股份有限公司技术中心,太原030003
  • 收稿日期:2009-08-12 出版日期:2010-02-01 发布日期:2022-10-27
  • 作者简介:赵昱臻(1970-),男,硕士研究生,高级工程师,1995年东北 大学毕业,纯铁产品研究与开发。

Control of Carbon and Sulfur Content in Electroslag Remelting Pure Iron

Zhao Yuzhen1,2, Ren Xueping1, Bao Weiping1, Wang Xinyu2,Miao Xiao2   

  1. 1 School of Materials Science and Engineering, University of Science and Technology, Beijing 100083;
    2 Technical Center, Shanxi Taigang Stainless Steel Co Ltd, Taiyuan 030003
  • Received:2009-08-12 Published:2010-02-01 Online:2022-10-27

摘要: 分析了5t锭纯铁电渣重熔过程增碳和脱硫率低的原因。通过将~70%萤石、~30%氧化铝粉、3%~7%SiO2、0.05%~0.09%C的原渣系改成65%萤石、25%氧化铝粉、10%生石灰、≤1%SiO2、≤0.02%C的新渣系,采用1t电渣锭并将结晶器填充比由30%提高到45%、电渣重熔过程向渣中加铝粉等工艺措施,使电渣重熔纯铁的最大增C量由0.067%降至0.001%,平均脱硫率由41%~46%增至53.4%~78.0%,电渣锭碳、硫含量均≤0.003%,满足了超低碳-超低硫纯铁YT01B的质量要求。

关键词: 电渣重熔, 纯铁, 碳, 硫控制

Abstract: The main reasons of 5 t ingot carbon-pickup and low desulphurization ratio for pure iron during electroslag remelting (ESR) process are analyzed. With the process measures including to replace original remelting slag (% ) ~70 fluorite, ~30 alumina powder, 3 -7SiO2, 0. 05 ~0. 09C by new remelting slag (% ) 65 fluorite, 25 alumina powder, 10 limestone, ≤SiO2, ≤0. 02C; adopting the process measures such as using 1 t ESR ingot with increasing mold packed ratio from 30% to 45% , and adding aluminum powder during electroslag remelting, the maximum carbon-pickup in ESR pure i- ron decreases to 0. 001% from original 0. 067% , the average desulphurization ratio increases to 53. 4% ~78% from original 41% ~46% and the carbon and sulfur content in ESR ingot are all ≤0. 003% , to meet the requirements of quality of ultra-low carbon-ultral-low sulfur prue iron YT01B.