82B硬线钢碳硫偏析的影响因素及合理工艺参数研究  

Investigation on the Influencing Factors of Carbon and Sulfur Segregations and Rational Process Parameters of 82B Hard Wire Steel

作　　者：王宏斌[1] 唐海燕[1] 李京社[1] 汪庆国[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《钢铁钒钛》2012年第4期86-91,共6页Iron Steel Vanadium Titanium

基　　金：国家自然科学基金(51074021);教育部博士点基金(20100006120008)

摘　　要：以现场试验和实验室分析相结合的方法,对不同连铸工艺条件下生产的82B铸坯的碳硫偏析行为进行了系统研究。结果表明:过热度、拉速和末搅拌三个影响铸坯偏析的因素所起的作用随铸坯内部位置和偏析元素种类的不同而不同。针对中心碳硫偏析,拉速的影响大于其它两个因素。在拉速提高的情况下,适当增加二冷强度可以有效地减轻铸坯的碳硫偏析特别是中心部位的碳硫偏析。中间包的水力学模拟表明适宜的拉速为1.8 m/min。The behavior of carbon and sulfur segregations of 82B hard wire steel produced under different continuous casting conditions has been systematically analyzed based on field tests and laboratory analysis.The results show three factors including superheat,casting speed and F-EMS which influence segregation of billets work differently with the variations of inner parts and segregation elements.For the central segregations of carbon and sulfur,the effect of casting speed dominates over the other factors.Under high casting speed,proper increase of secondary cooling intensity could effectively decrease carbon and sulfur segregations of billet,especially for the central part of the billet.The hydraulic simulation of tundish shows the optimal casting speed should be 1.8 m/min.

关 键 词：偏析 拉速 过热度 二冷强度 末搅拌 

分 类 号：TF777[冶金工程—钢铁冶金]