前置式超快冷方式下DP700的生产工艺  

Production Process of DP700 Steel with Early Ultra Fast Cooling

作　　者：蔡晓辉[1] 刘旭辉[1] 刘振宇[1] 张志利[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110819 [2]首钢京唐钢铁联合有限责任公司,河北唐山063200

出　　处：《东北大学学报（自然科学版）》2011年第10期1423-1425,1430,共4页Journal of Northeastern University(Natural Science)

基　　金：高等学校博士学科点专项科研基金资助项目(20090042120004)

摘　　要：基于前置式超快冷(UFC)系统,在热轧生产线上开发减量化的双相钢(DP)生产工艺.结合大量实验室热轧实验,摸索出DP钢在超快冷方式下的冷却工艺.现场工业生产得到的DP钢抗拉强度在700MPa以上,屈强比为0.51～0.60,伸长率为22%～28%.实验室和生产线上试制结果表明,采用前置式UFC生产DP钢,可以少用或者不用(微)合金,降低成本且提高焊接性能.The production process of source-saving hot-rolled dual phase（DP） steel on HSM-line with early ultra fast cooling（UFC） was investigated.The cooling process of DP steels with early UFC was proposed after large number of experiments in the laboratory and in steel plant.The results obtained from laboratory and the plant showed that tensile strength is more than 700 MPa,yield ratio is 0.51～0.60 and elongation is 22%～28% for the DP steel produced in steel plant.The proposed production process of DP700 steel with early UFC is feasible with no or less microalloy/alloy elements,which decreases the production cost and improves the welding property.

关 键 词：热轧 双相钢 前置式UFC 分段冷却 生产工艺 

分 类 号：TG335.58[金属学及工艺—金属压力加工]