薄板坯连铸机生产硼微合金化钢板边部缺陷的控制  

Control of Strip Edge Defects for Boron Microalloy Steel in Thin Slab Caster Process

作　　者：关春立[1,2] 韩立海 姜英 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819 [2]通化钢铁公司炼轧厂,吉林通化134003

出　　处：《钢铁》2013年第3期30-34,共5页Iron and Steel

摘　　要：硼微合金化是一种提高钢材性能的新技术,但是钢中加入硼元素后,钢板容易产生边部缺陷。通钢FTSR薄板坯连铸连轧生产线对SS400钢种进行硼微合金化处理后,板卷的边部缺陷问题较严重。通过研究边部缺陷产生的机制和进行现场工艺改进试验,对钢水中[Mn]、[S]、[B]、[N]等成分进行调整和严格控制,优化薄板坯连铸机二冷水配水制度,有效地解决了硼微合金化SS400钢种容易产生边部缺陷的问题。Boron microalloying was a new technology to improve the performance of steel, but the problem of edge defects on strip were easily appeared after B was added into steel. Boron microalloying was carried out on steel grade of SS400 on FTSC thin slab casting and rolling process of Tonghua Steel, the problem of edge defect on strip was serious. Based on the investigations of the mechanism of edge defects, production tests were implemented by the control of [Mn], [S], [B], [N] composition and the optimization of secondary cooling on the thin slab caster. The problem of the edge defects on the strip of B microalloy steel of SS400 were solved effectively.

关 键 词：硼微合金化 SS400 薄板坯连铸连轧 成分 二冷水配水 

分 类 号：TF777[冶金工程—钢铁冶金]