夹杂物对20MnSi螺纹钢冷弯断裂的影响  

Effect of Inclusions of 20MnSi Steel in Cold Bending

作　　者：刘安民 徐小武 杨敏刚[2] 张朝晖[2] 

机构地区：[1]酒泉钢铁集团公司,甘肃嘉峪关735000 [2]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《热加工工艺》2014年第14期93-95,共3页Hot Working Technology

摘　　要：通过化学成分、金相观察、扫描电镜和EDS分析,对20MnSi热轧带肋钢筋发生脆性断裂的现象进行研究,发现钢中非金属夹杂物含量过多、分布较集中是造成20MnSi螺纹钢脆性断裂的主要原因。By the observation and analysis of chemical composition, microstructure, SEM and EDS, the cold bending fracture of 20 MnSi hot rolling ribbed steel bar produced by JISCO Group wing steel company was researched. The results show that the key reason for cold bending fracture of 20 MnSi steel is due to the content of too much non-metallic inclusions and relatively concentrated distribution.

关 键 词：20MNSI螺纹钢 脆性断裂 夹杂物 

分 类 号：TG113.25[金属学及工艺—物理冶金]