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 ›› 2022, Vol. 43 ›› Issue (4): 63-65.

• 工艺技术 • 上一篇    下一篇

10B21冷镦钢冶炼工艺优化实践

陈修君1,毕 胜1 ,周伟基1,姚玉东2,王 鑫1   

  1. 1东北特殊钢集团股份有限公司总工办;
    2东北特殊钢集团股份有限公司,大连,116000
  • 收稿日期:2022-01-06 出版日期:2022-08-01 发布日期:2022-08-19
  • 作者简介:陈修君(1979-),男,高级工程师,2006年内蒙古工业大学 (本科)毕业,炼钢工艺研究。

Smelting Process Optimization Practice for Cold Heading Steel 10B21

CHEN Xiujun1, BI Sheng1, ZHOU Weiji1, YAO Yudong2, WANG Xin1   

  1. 1 Chief Engineer Office of Dongbei Special Steel Co Ltd;
    2 Dongbei Special Steel Co Ltd, Dalian, 116000
  • Received:2022-01-06 Published:2022-08-01 Online:2022-08-19

摘要: 针对10B21含硼钢(/%:0.18~0.23C,≤1.0Si,0.60~0.90Mn,≤0.025P,≤0.020S,≥0.015Alt,≥0.008B)盘条表面铁皮疤缺陷及连铸坯角部表面裂纹进行了分析,通过优化钢的成分控制(/%:0.020~0.050Alt,0.03~0.05Ti,≤0.0060N,0.000 8~0.0012B)提高拉速至2.3~2.4 m/min以保证铸坯过拉矫时温度≥980℃,采取将连铸二冷比水强度由原1.29 L/kg降至1.05 L/kg等措施,可以有效控制连铸坯角部表面裂纹的出现,轧制后的盘条表面铁皮疤缺陷率由原来的15%降到1%以下。

关键词: 含硼冷镦钢10B21, 合金成分, 表面裂纹, 工艺优化

Abstract: According to analysis on the scab defects on the surface of 10B21 boron-containing steel (/% :0.18 〜 0.23C, ≤ l.0Si, 0.60 ~0.90Mn,≤ 0.025P, ≤ 0.020S, ≥0.015 Alt, ≥0.008B) wire rod and the surface cracks on the comers of continuous casting billet, by optimizing the composition control of steel (/% :0.020 ~ 0.050Alt,0.03 〜0.05Ti, ≤0.0060N,0.000 8 ~0.0012B) , increasing the drawing speed to 2.3 ~2.4 m/min to ensure the through stretching and straightening temperature of the slab ≥980 ℃;by reducing the specific water strength of the secondary cooling of continuous casting from original 1.29 L/kg to 1.05 L/kg, etc, that can effectively control the comer crack on the surface of continuous casting billet, the scale defect rate is declined from the original 15% to less than 1% after the roiled wire rod.