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 ›› 2021, Vol. 42 ›› Issue (6): 25-28.

所属专题： 夹杂物控制

• 工艺技术 • 上一篇    下一篇

IF钢210 t RH精炼过程中调钛时机对洁净度的影响

吕国成1,包丽明1,朱金禄2   

  1. 1 吉林电子信息职业技术学院，吉林132021;
    2 通化钢铁股份公司技术中心，通化134003
  • 收稿日期:2021-04-12 出版日期:2021-12-23 发布日期:2022-01-03
  • 作者简介:吕国成(1982-)，男，硕士(2009年辽宁科技大学)，副教授， 2006年辽宁科技大学(本科)毕业，冶金传输和生产工艺研究。

Effect of Timing of Titanium Adjustment in 210 t RH  Refining Process on Cleanliness of IF Steel

Lü Guocheng1, Bao Liming1 ，Zhu Jinlu2   

  1. 1 Jilin Technology College of Electronic Information, Jilin 132021; 
     2 Technology Center of Tonghua Iron and Steel Co Ltd, Tonghua 134003
  • Received:2021-04-12 Published:2021-12-23 Online:2022-01-03

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摘要： 通过在210 t RH精炼IF钢3个浇次的试验，采用扫描电镜详细研究了RH精炼过程中调Ti时机对IF钢洁净度的影响。结果表明，加Al后2、4、6 min调Ti，RH结束时钢液中的N含量平均分别为26.7×10-6、23.6×10-6、27.4×10-6。当吹氧升温所耗氧气量在30~40 m3，RH到站氧平均为579×10-6时，RH结束T［O］为70.3×10-6，当吹氧升温氧耗量在75~90 m3，RH到站氧平均为669×10-6时，RH结束T［O］为109.2×10-6。随着加Al前氧活度增加，RH结束时T［O］总体呈增加趋势。加Al后6 min调Ti钢中5 μm当量直径夹杂物数量密度最低为9.32个/mm2，夹杂物数量密度最低。

Abstract: Through 3 heats IF steel of 210 t RH refining process test, the effect of titanium-adjusted time on cleanliness of IF steel in RH refining process is studied by scanning electron microscopy. The results indicate that titanium adjustment after adding aluminum for 2,4 and 6 min, the average N content in molten steel at RH end is 26. 7 x 10-6, 23. 6 x 10-6 and 27. 4 x 10-6 , respectively. When the oxygen blowing amount for heating,the oxygen consumption is 30 〜40 m3 and the average initial oxygen content in liquid of RH is 579 x 10-6, the T[O] is 70. 3 x 10-6 at the RH end； When the oxygen blowing amount for heating, the oxygen consumption is 75 ~ 90 m3 and the average arrival oxygen of RH is 669 x 10-6, the T[O] is 109. 2 x 10-6 at the RH end. The T[O] at the RH end shows an increase trend with the increase of oxygen activity before adding aluminum. The quantity density of inclusions with 5μm equivalent diameter in steel is 9. 32 /mm2 when adjusted Ti alloy after adding aluminum 6 min, it is lowest.

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