借鉴前人研究成果并结合生产实际对复合吹炼转炉底吹全程吹氮工艺螺纹钢质量及性能进行了系统研究。综合对比采用全程吹氮和氮氩切换方式（Ⅰ模式和Ⅱ模式两种不同供气参数）对冶炼、浇铸各个时期钢中氮氧含量、铸坯、轧材内在质量及轧材综合性能差异。结果表明,采用全程吹氮方式与氮氩切换方式钢中氮含量、轧材的夹杂物总量、金相组织的级别、屈服、抗拉强度和断后伸长率都无明显区别,但在同种供气方式上,不同的供气参数对上述结果却有一定的影响。在研究过程中同时研究了时效对轧材综合性能的影响。
Base on the research results of literatures and production condition of BOF,the influences of the smelting process by whole process bottom blowing nitrogen on the quality and complex performance of rolled metal were systematically investigated in the combined blown converter.Through adopting the process of whole process bottom blowing nitrogen and the change-over from nitrogen to Ar（including Ⅰand Ⅱmode）,the nitrogen and oxygen content in steel during the refining,casting,the casting blank and rolled metal quality and the complex performance of rolled metal were studied.The results show that the nitrogen content,the inclusion and metallurgical structure grades,the yield strength,tensile strength and percentage elongation after fracture of rolled metal produced by whole process bottom blowing nitrogen and the change-over from nitrogen to Ar have no distinctly difference.However,for same supply gas mode,different supply parameters,there are certain influences on above results.Meanwhile the influence factors of ageing on complex performance of rolled metal were studied.
参考文献
| [1] | 史美伦,段贵生,刘阳春,吴华杰,傅杰.120t顶底复吹转炉全程底吹氮气的试验研究[C].第十四届全国炼钢学术会议论文集,2006:156-162. |
| [2] | 刘阳春,吴华杰,傅杰.150 t 复吹转炉氮氩切换和全程底吹氮气工艺研究[J].中国冶金,2010(01):26-29,34. |
| [3] | 丁广友,杨晓江,张超,刘玉生,苏有权.顶底复合吹炼转炉、LF及薄板坯连铸中氮的变化[J].河北冶金,2006(03):87-90. |
| [4] | 杨海滨,王彦杰,杨之俊,魏励.氮在炼钢过程中的变化及影响因素分析[C].第七届中国钢铁年会论文集,2009:864-870. |
| [5] | 吕佐明,王三武.氮对HRB335螺纹钢筋力学性能的影响[J].理化检验-物理分册,2003(10):509-511,540. |
| [6] | 张登明,用学政,朱高萍,陈英俊,吴海龙,江悦.20MnSi螺纹钢断裂分析[J].物理测试,2001(05):26-28,13. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%