摘要
从热轧及冷轧工艺参数与设备运行情况入手,分析了DP980高强双相钢冷轧环节带钢头部和尾部厚度波动大的原因。认为热轧带钢在冷却过程中组织及性能差异,是造成带钢头部与尾部厚度波动的主要原因。采用U型冷却方式后,热轧带钢组织和性能更加均匀,避免了带钢长度方向的强度差异造成的冷轧厚度波动。
Starting from the hot rolling and cold rolling process parameters and equipment operation,the reasons for the large fluctuation of strip head and tail thickness in the cold rolling process of DP980 high strength dual phase steel were analyzed.It is considered that the difference in structure and properties of hot rolled strip during cooling process is the main reason for the thickness fluctuation of strip head and tail.The structure and properties of hot rolled strip are more uniform after U-shaped cooling,which avoids the thickness fluctuation of cold rolled caused by the strength difference in the length direction of strip.
作者
苏振军
曹晓恩
杨建宽
孔加维
薛仁杰
Su Zhenjun;Cao Xiaoen;Yang Jiankuan;Kong Jiawei;Xue Renjie(Technology Center of HBIS Group Hansteel Company,Handan,Hebei,056015;Hebei Key Laboratory of Advanced Steel Materials for Auto,Handan,Hebei,056015)
出处
《河北冶金》
2019年第7期40-44,共5页
Hebei Metallurgy
基金
河北省重大科技成果转化专项(编号:18041033Z)
关键词
高强钢DP980
厚度波动
金相组织
力学性能
层流冷却
U型冷却
high strength steel DP980
thickness fluctuation
metallographic structure
mechanical properties
laminar cooling
U-shape cooling
