钒微合金化H型钢表面裂纹研究与控制  

Analysis and Control of Cracks on the Surface of H Beam of Vanadium Microalloyed Steel

作　　者：吴坚[1] 汤寅波[1] 胡春林[1] 邓南阳[1] 付振宇[1] 

机构地区：[1]马钢股份公司第三钢轧总厂,安徽马鞍山243000

出　　处：《安徽冶金科技职业学院学报》2015年第3期14-17,共4页Journal of Anhui Vocational College of Metallurgy and Technology

摘　　要：分析了V微合金H型钢S450J0-T轧后表面裂纹的形成原因。结果表明,S450J0-T钢轧后裂纹主要是由于连铸过程中铸坯上细小裂纹所导致,并在轧制过程中扩展形成。通过对钢水成分进行控制以及连铸工艺进行优化,显著降低了该钢种轧后裂纹修磨率。The causes of surface cracks formation of H beam of V microalloyed steel S450J0- T has been analyzed. The results showed that,the cracks was generate from slight cracks on beam blanks in continues casting process,and extend during rolling process. The grinding ratio of the grade of steel was significantly reduced after optimal control of composition of liquid steel and continuous casting process.

关 键 词：V微合金化 H型钢 表面裂纹 

分 类 号：TF771.2[冶金工程—钢铁冶金] TG113.25[金属学及工艺—物理冶金]