含钒高氮高强耐候钢结晶器保护渣开发

›› 2015, Vol. 31 ›› Issue (1): 65-68.

• 辅助技术、材料及设备 • 上一篇下一篇

含钒高氮高强耐候钢结晶器保护渣开发

吴国荣

攀枝花钢铁研究院

收稿日期:2014-03-21 修回日期:2014-09-12 接受日期:1900-01-01 出版日期:2015-02-05 发布日期:2015-02-13
通讯作者: 吴国荣 E-mail:wuguorong1979@163.com

Development of mold powder for high-strength weathering steel containing vanadium

Panzhihua Iron and Steel Research Institute

Received:2014-03-21 Revised:2014-09-12 Accepted:1900-01-01 Online:2015-02-05 Published:2015-02-13

摘要/Abstract

摘要： 针对含钒高氮高强耐候钢成分中V、N元素含量较高，且碳含量处在包晶反应区，浇铸过程中容易产生皮下网状裂纹缺陷的问题，在分析缺陷原因以及钢种浇铸对保护渣特殊要求的基础上，从保护渣结晶性能、润滑性能和配碳模式3个方面设计开发了适应该类钢种浇铸的结晶器保护渣理化性能指标。从现场推广应用效果来看，浇铸拉速由原来的0.70~0.75 m/min提高到0.90~0.95 m/min，保护渣液渣层厚度控制在9~11 mm，消耗量控制在0.45～0.65 kg/t，Q450NQR1高强耐候钢铸坯表面无缺陷率达到90.14 %，热轧板卷起层缺陷率由41.29 %降至4.24 %。

关键词: 高强耐候钢, 连铸, 保护渣, 网状裂纹

Abstract: Because of high content of vanadium and nitrogen in high-strength weathering steel, as well as carbon content in peritectic reaction zone, subcutaneous net cracks on slab were easy to generate in continuous casting process. The reasons of cracks defects were analyzed, and on this basis, mold powder, which could meet the needs of continuous casting process for this kind of steel grade, were studied and developed. Industrial tests showed that, when the casting speed was increased from 0.70~0.75 m/min to 0.90~0.95 m/min, the thickness and consumption of liquid powder in mold could be controlled in 9~11mm and 0.45～0.65 kg/t respectively. The acceptable ratio of slab surface quality for Q450NQR1 steel is as high as 90.14 %, and furthermore, the peeling defect ratio on hot rolled coil was reduced from 41.29 % to 4.24 %.

Key words: high strength weathering steel, continuous casting, mold powder, net cracks

吴国荣. 含钒高氮高强耐候钢结晶器保护渣开发[J]. , 2015, 31(1): 65-68.

[1]	龙潇1，龙绍檑1，何生平2. 包晶钢连铸保护渣固渣膜凝固密度演变研究[J]. 炼钢, 2020, 36(3): 39-43.
[2]	陈建梁1，梅峰1，胡娇2. 稳态浇铸下低碳铝硅镇静钢卷渣产生的原因和控制对策[J]. 炼钢, 2020, 36(3): 51-54.
[3]	徐旺1,2，刘增勋1,2，肖鹏程1,2,朱立光2,3. 方坯表面纵裂的数值模拟研究[J]. 炼钢, 2020, 36(2): 48-52.
[4]	汪国才，李浩，陶承岗，张诚. 连铸圆坯表面纵裂原因及控制措施[J]. 炼钢, 2020, 36(2): 53-59.
[5]	谢长川1, 李富帅1, 钱亮1, 邹旭1，郭春光2. 高拉速小方坯铸机关键技术的研发及应用[J]. 炼钢, 2020, 36(2): 59-62.
[6]	翟冰钰，王万林，张磊. 高拉速条件下中碳钢连铸用保护渣的性能研究[J]. 炼钢, 2020, 36(1): 50-56.
[7]	刘宏春，单红超，林大帅，车晓锐，李彦军. 高强钢筋方坯内部质量影响因素分析及优化[J]. 炼钢, 2020, 36(1): 57-61.
[8]	付常伟. 基于多模型控制的连铸坯定重系统研究与应用[J]. 炼钢, 2020, 36(1): 62-66.
[9]	李阳1,2，董郅轩1,2，程常桂1,2，位士发1,2，薛正良1,2. 连铸二冷区内混式气水雾化喷嘴的发展[J]. 炼钢, 2019, 35(6): 46-51.
[10]	邹涛1，康旭1，屈乐欣1，战东平1，张慧书2，姜周华1. 单流中间包控流装置优化的水模型试验与应用[J]. 炼钢, 2019, 35(5): 43-49.
[11]	林大帅，李晓斐，张文涛，李艳峰，王景宁，刘剑锋. 轻压下对C610L连铸板坯内部品质的改善[J]. 炼钢, 2019, 35(5): 50-53.
[12]	王卫华1，2，李战军1，2，初仁生1，2，陈霞1，2. 厚规格高合金钢坯堆垛缓冷工艺开发[J]. 炼钢, 2019, 35(5): 57-62.
[13]	周志伟1，田俊2，徐益峰1. 非调质钢铸坯中夹杂物的分布[J]. 炼钢, 2019, 35(5): 68-74.
[14]	李建新,王新东,李双江. 河钢炼钢技术进步与展望[J]. 炼钢, 2019, 35(4): 1-7.
[15]	雷少武，王立波，李东华，王景山，张思维，崔洪云. Q235B钢矩形坯在结晶器中传热凝固行为的研究[J]. 炼钢, 2019, 35(4): 43-52.

含钒高氮高强耐候钢结晶器保护渣开发

Development of mold powder for high-strength weathering steel containing vanadium

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价