包钢CSP“超快冷”系统及590MPa级C-Mn低成本热轧双相钢开发  

Ultra Fast Cooling on Baotou CSP Line and Development of 590 MPa Grade C-Mn Low-Cost Hot-Rolled Dual Phase Steel

作　　者：王国栋[1] 刘相华[1] 孙丽钢[2] 刘哲[2] 刘德勤[2] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004 [2]包钢钢联股份有限公司薄板坯连铸连轧厂,内蒙古包头014010

出　　处：《钢铁》2008年第3期49-52,共4页Iron and Steel

摘　　要：介绍了包钢CSP线“超快冷”系统的建立和运行情况。在包钢CSP线采用轧后层流冷却和“超快冷”工艺，开发出厚度4～11mm的590MPa级C-Mn低成本热轧双相钢。主要力学性能优良，抗拉强度590～620MPa，屈强比0．62～0．67，伸长率26％～36％，n值0．21。简要分析了“超快冷”工艺对双相钢组织形成的作用。The parameters and operation of the ultra fast cooling system in Baotou CSP line are introduced. 590 MPa grade low-cost C-Mn dual phase steel strips of 4-11 mm in thickness were developed by using laminar and ultra fast cooling process. The main mechanical properties are： tensile strength 590-620 MPa, yield ratio 0.62-0.67, elongation 26%-36% and the n value of 0.21. The effects of ultra fast cooling on the structure of dual phase steel strip are analyzed.

关 键 词：CSP “超快冷”系统 热轧双相钢 C-MN钢 力学性能 

分 类 号：TG335.11[金属学及工艺—金属压力加工]