FTSR薄板坯连铸连轧生产X60管线钢的开发研究

来源期刊：钢铁2009年第9期

论文作者：卢军辉 张成武 张慧 朴峰云 刘家琪 毕洪志

文章页码：63 - 66

关键词：X60管线钢； 铌微合金化； FTSR； 控制轧制； 控制冷却

Key words：x60 pipeline steel； niobium micro alloy； FTSR； controlled rolling； controlled cooling

摘    要：基于对铌微合金化技术的系统研究,对X60管线钢的化学成分进行设计,针对薄板坯连铸连轧生产线的特点,对生产过程的各项工艺参数进行控制,得到了87 mm×1 538 mm的薄铸坯;采取控制轧制和控制冷却技术,轧后得到7.9 mm×1 538 mm的板卷。经检测,生产的管线钢组织没有混晶现象,各项力学性能都达到了要求。观察冲击断口,发现延展性韧窝,没有分层现象,生产的X60达到了API-5L标准和工程使用要求。

Abstract: The composition of X60 pipeline steel based on the systematically research of niobium micro alloy has been designed.The 87 mm×1 538 mm thin slab has been obtained by controlling the parameters of FTSR process.In the rolling process,controlled rolling and controlled cooling technology have been used to get the coil which thickness is 7.9 mm.The microstructure of produce pipeline has no duplex grain structure by detection,and the mechanical properties are all satisfied with the necessary.By checking out the fracture surface,the ductility dimple has been found and there is no laminate,the production has meet the API-5L standard and engineering application.