炼钢 ›› 2020, Vol. 36 ›› Issue (6): 46-48.

• 凝固与浇铸 • 上一篇    下一篇

钢包长水口结构优化对钢水增氮的试验研究

李尚兵,陈远清,黄建军,耿恒亮   

  1. (江苏永钢集团有限公司 产品研发中心, 江苏 张家港 215628)

  • 出版日期:2020-12-05 发布日期:2020-12-04

Experimental study on increasing nitrogen of molten steel by optimizing the structure of ladle long nozzle

  • Online:2020-12-05 Published:2020-12-04

摘要: 介绍了江苏永钢集团有限公司采用“110 t电炉→LF精炼→VD精炼→连铸”工艺生产优特钢时,钢包长水口对钢水增氮情况的影响。通过对长水口内腔结构优化,增加钢包下水口与长水口之间的接触,提高密封性能,同时改进水口材质。与原长水口对比,采用改进优化后的长水口,在相同条件下,钢水增氮质量分数由5.8×10-6降低到1.2×10-6 ,长水口结构优化达到了预期效果。

关键词: 钢包, 长水口, 结构优化, 增氮

Abstract: In this paper, the effect of ladle nozzle on nitrogen addition of molten steel was introduced by the process of 110 t electric furnace→LF refining→VD refining→continuous casting in Jiangsu Yonggang Group Co.,Ltd. By optimizing the inner cavity structure of the long nozzle, the contact surface between the lower nozzle and the long nozzle was increased to improve the sealing performance, and the material was improved. Compared with the original long nozzle, under the same conditions, the nitrogen addition of molten steel decreased from 5.8×10-6 to less than 1.2×10-6, and the structure optimization of long nozzle achieved the expected results.


Key words: ladle, long nozzle, structural optimization, nitrogen addition