摘要
针对1000 MPa级超高强钢在工业大生产酸轧过程中出现的通卷性能波动大、头尾强度差异显著等难题,本研究通过多工艺参数协同调控策略,系统性优化了热轧轧制工艺、卷取温度、层流冷却模式及下线保温工艺。结果表明:高温卷取(683℃)使带钢热轧屈服强度标准差降低75%,U形冷却技术将热轧头尾屈服强度波动从239 MPa压缩至85 MPa,保温罩应用可抑制热轧带尾强度异常升高104 MPa。本文通过系统性优化热轧轧制工艺参数,为1000MPa级超高强钢的工业大生产提供了有益借鉴。
To address the challenges of significant full-coil property fluctuations and pronounced head-tail strength differences during the industrial-scale acid rolling production of 1000 MPa-grade ultra-high strength steel(UHSS),this study systematically optimized key processes including hot rolling parameters,coiling temperature,laminar cooling patterns,and post-coiling thermal covers through a coordinated multi-parameter control strategy.The results demonstrate that high-temperature coiling(683℃)reduced the standard deviation of hot-rolled yield strength by 75%.The U-shaped cooling technique restricted head-tail yield strength fluctuation from 239 MPa to 85 MPa.Application of thermal covers suppressed abnormal yield strength elevation by 104 MPa at the strip tail.This work provides valuable insights for industrial-scale production of 1000 MPa-grade UHSS through systematic optimization of hot rolling process parameters.
作者
刘自权
贾亚飞
Liu Ziquan;Jia Yafei(Technology Center of HBIS HanSteel,Handan 056015,Hebei)
出处
《福建冶金》
2026年第2期31-35,共5页
Fujian Metallurgy
基金
河北省重大科技成果转化专项项目(项目编号18041033Z)。
关键词
超高强钢
热轧工艺
性能均匀性
高温卷取
层流冷却
ultra-high strength steel
hot rolling process
property uniformity
high-temperature coiling
laminar cooling
