卷取与平整工艺对Q350EWR1力学性能的影响  

The Influence of Coiling and Smoothing Processes on the Mechanical Properties of Q350EWR1

作　　者：耿云飞 邢天庆 高华 杨玉厚 郭隆 魏梦麒 陈彤 Geng Yunfei;Xing Tianqing;Gao Hua;Yang Yuhou;Guo Long;Wei Mengqi;Chen Tong(HBIS Group Tangsteel Company,Tangshan Hebei 063016,China)

机构地区：[1]河钢集团唐钢公司,河北唐山063016

出　　处：《山西冶金》2024年第6期48-50,共3页Shanxi Metallurgy

摘　　要：利用光学显微镜、拉伸实验以及相变模拟软件对Q350EWR1高耐候热轧铁道用钢不同卷取温度和不同平整工艺下的显微组织、力学性能进行了观察分析。结果表明:该钢种在620℃以下卷取时,随着卷取温度的降低强度急剧升高,当卷取温度在620~660℃范围时,强度波动幅度较小,力学性能趋于稳定,不同温度下带钢强度与显微组织存在明显对应关系;热轧带钢经过平整工序后屈服强度升高,抗拉强度变化不明显。The microstructure and mechanical properties of Q350EWR1 high weather resistant hot-rolled railway steel under different coiling temperatures and smoothing processes were observed and analyzed using optical microscopy,tensile experiments,and phase transformation simulation software.The results showed that the strength of the steel increased sharply with the decrease of coiling temperature below 620℃.When the coiling temperature was in the range of 620~660℃,the strength fluctuation amplitude was small,and the mechanical properties tended to stabilize.There was a clear corresponding relationship between the strength of the strip steel and the microstructure at different temperatures.After the leveling process,the yield strength of hot-rolled strip steel increases,but the change in tensile strength is not significant.

关 键 词：卷取温度 平整工艺 力学性能 

分 类 号：TG335.5[金属学及工艺—金属压力加工]