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 ›› 2012, Vol. 33 ›› Issue (1): 41-45.

• 工艺技术 • 上一篇    下一篇

帘线钢冶炼过程夹杂物转变的控制

陈书浩, 何肖飞, 姜 敏, 王新华, 黄福祥, 王万军   

  1. 北京科技大学冶金与生态工程学院,北京100083
  • 收稿日期:2011-09-09 出版日期:2012-02-01 发布日期:2022-09-20
  • 作者简介:陈书浩(1983-),男,博士研究生,2006年北京科技大学毕业,硬线钢、洁净度和夹杂物研究。

Control of Inclusion Transformation in Steelmaking Process of Tyre Cord Steel

Chen Shuhao, He Xiaofei, Jiang Min, Wang Xinhua, Huang Fuxiang, Wang Wanjun   

  1. School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083
  • Received:2011-09-09 Published:2012-02-01 Online:2022-09-20

摘要: 研究的帘线钢的冶炼流程为150 tLD-RH-LF-软吹氩-CC工艺。通过LD出钢时加入Si-Mn脱氧,并在LF加入低碱度顶渣进行钢渣反应控制钢中非金属夹杂物的塑性。结果表明,RH-LF-中间包和铸坯阶段,钢中主要夹杂物分别为MnO-Al2O3-Si02(RH),Ca0-Al2O3-Si02(LF)和MnO-Al2O3-SiO2(中间包和铸坯),采用Si-Mn脱氧和SiC扩散脱氧,低碱度低Al2O3顶渣精炼,控制T[O]≤20×10-6,[A1]s≤0.0013%,可有效控制钢中夹杂物数量和尺寸,以及控制夹杂物中Al2O3含量并形成可塑性夹杂。

关键词: 帘线钢, T[O], [Al]s, 夹杂物, 可塑性

Abstract: The studied steelmaking flow sheet for tyre cord steel is 150 t LD-RH-LF-soft argon blowing-CC process. The plasticity of non-metallic inclusions in steel is controlled by adding deoxidation reagent Si-Mn during LD tapping and adding low basicity top slag during LF refining to carry out steel-slag reaction. Results show that in RH, LF, tundish-bloom procedure, the main inclusions in steel are respectively MnO-Al203 -SiO2 ( RH) , CaO-Al2O3 -SiO2 (LF) and MnO-Al2O3- SiO2 (tundish and bloom) , It is available to control the quantity and size of inclusions in steel and the Al2 03 content in inclusions and to form plastic inclusions by using Si-Mn deoxidation and using SiC diffusion deoxidation, low basicity low A12O3 top slag refining, controlling T[ 0] ≤20 x 10-6 and [ Als] ≤0.001 3% .

Key words: Tyre Cord Steel, , T[0],  , [ Al]s, , Inclusions, Plasticity