通过对含铌钢边裂进行系统研究发现,铸坯在二冷区矫直时温度处于低塑性区域是铸坯角部横裂纹产生的主要原因,对中厚板边部质量造成严重影响。通过优化含铌钢酸溶铝与氮含量,以及对连铸二冷优化,提高铸坯边部温度等措施,有效地控制了边裂的产生。
After analyzing the edge crack of C-Si-Mn-Nb-containing medium plate,the main cause of corner crack on slab is that the slabs are at the valley of hot ductility when entering the straightening zone.When optimizing the Al and N content of steel and secondary cooling to improve the corner temperature of slab,the edge crack of plate can be controlled effectively.
参考文献
| [1] | Mintz B;Yue S;Jonas J .Hot Ductility of Steels and its Rela tionship to The Problem of Transverse Cracking During Con- tinuous Casting[J].International Materials Reviews,1991,36(05):187. |
| [2] | Mintz B .The Influence of Composition on The Hot Ductility of Steels and to the Problem of Transverse Craeking[J].ISIJ In- ternational,1999,39(09):833. |
| [3] | Maehara Y;Yasumoto K;Tomono H .Overview:Surface Cracking Mechanism of Continuously Cast Low Carbon Low Alloy Steel Slabs[J].Materials Science and Technology,1990,6(09):793. |
| [4] | Mintz B;Abushosha R .Influence of Vanadium on Hot Ductili- ty of Steel[J].Ironmaking and Steelmaking,1993,20(06):445. |
| [5] | McPherson N A;McLean A.Transverse Cracking in Continu ously Cast Products[A].The Iron and Steel Society,1997 |
| [6] | Wolf.Solidification and Strand Surface Quality of Peritectic Steel[A].The Iron and Steel Soeiety,1997 |
| [7] | Patrick B;Ludlow V.Development of Casting Practices to Min- imize Transverse Cracking in Microalloyed Steels[M].Revue de Metallurgie/Cahiers d'Informations Techniques,1994:1081. |
| [8] | Yasunaka H .Improvement of Transverse Corner Cracks in Continuously Cast Hypoperiteetic Slabs[J].Tetsu To Hagane-Journal of the Iron and Steel Institute of Japan,1995,81(09):26. |
| [9] | Mintz B;Yue S;JonasJ .Hot Ductility of Steels and its Rela tionship to the Problem of Transverse Cracking During Contin- uous Casting[J].International Materials Reviews,1991,136(05):187. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%