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·560· 工程科学学报,第38卷,第4期 200m位置.精轧出口板形仪显示板形良好.生产该 nar flow rate on the heat transfer coefficient of a hot steel plate 带钢尾部时开机架间冷却水,两种手段同时起作用:生 cooling.J Unin Sci Technol Beijing,2012,34(12):1421 产带钢头部时没有开机架间冷却水,只有层流冷却边 (汪贺模,余伟,苏岚,等.水流量对热轧钢板层流冷却过程 对流换热系数的影响.北京科技大学学报,2012,34(12): 部遮挡起作用.从图中可以看出带钢头部有明显浪 1421) 形,而尾部没有.综合统计结果和浪形测量结果表明, 5]Su Y P.Research on Internal Stress and Buckling During Laminar 堵塞机架间冷却水喷管和层流集管的边部喷嘴可以减 Cooling of Hot Rolled Steel Strip [Dissertation].Beijing:Univer- 少高强带钢浪形,堵塞机架间冷却水边部喷嘴更加有 sity of Science and Technology Beijing,2009 效.根据板形理论,即该优化手段可以实现残余应力 (苏艳萍.热轧带钢层流冷却过程内应力及屈曲变形研究[学 减量化 位论文].北京:北京科技大学,2009) 6]Wang X D,He A R,Yang Q,et al.Temperature and phase 5结论 transformation coupling prediction model of hot rolled strip cooled on the run-out table.J Unin Sci Technol Beijing,2006,28 (10): (1)根据实验和现场测量得到的数据,对模型调 964 整校正,得到700MPa级高强带钢层流冷却过程的有 (王晓东,何安瑞,杨荃,等.热轧带钢层流冷却过程中温度 限元模型,该模型可以较准确地计算带钢层流冷却过 与相变耦合预测模型.北京科技大学学报,2006,28(10): 程中的温度、相变和应力 964) (2)该有限元模型可以通过修改边界条件和初始 Chen Y L,Yu W,Su L,et al.Analysis of residual stress in hot rolled steel strip during laminar cooling.Trans Mater Heat Treat, 条件,得到新的模型,模拟不同工况对应的带钢,以计 2010,31(6):155 算各工况对残余应力减量化的影响规律,对比得出最 (陈银莉,余伟,苏岚,等.热轧带钢层流冷却过程中残余应力 有效的优化手段. 分析.材料热处理学报,2010,31(6):155) (3)通过两种优化工艺对密集冷却工艺下生产的 [8]Yi H L,Wang X N,Wang G D,et al.Microstructure and me- 高强带钢残余应力减量化的影响对比发现,要减小该 chanical properties of 710 MPa hot-rolled high-strength steel. 种高强带钢的残余应力,减小层流冷却的初始温差效 Northeast Unin Nat Sci,2009,30(10)1421 (衣海龙,王晓南,王国栋,等.710MPa级热轧高强钢的组 果好于边部遮挡的效果. 织性能.东北大学学报(自然科学版),2009,30(10):1421) Yoshida H.Analysis of flatness of hot rolled steel strip after cool- 参考文献 ing.Trans Iron Steel Inst Jpn,1984,24(3):212 Wang G D.The new generation TMCP with the key technology of [10]Umemoto M.Continuous cooling transformation kinetics.Weld ultra fast cooling.Shanghai Met,2008,30(2):1 1t,1990,4(12):939 (王国栋.以超快速冷却为核心的新一代TMCP技术.上海金 [11]Han H N,Park S H.Model for cooling and phase transformation 属,2008,30(2):1) behavior of transformation induced plasticity steel on run-out table Zhang Q D.Li B.Zhang X F.Research on the behavior and in hot strip mill.Mater Sci Technol,2001,17(6):721 effects of flatness control in strip temper rolling process.J Mech 12] Cho HH,Cho Y G,Im Y R,et al.A finite element analysis for Eng,2014,50(8):45 asymmetric contraction after coiling of hot-rolled steel.J Mater (张清东,李博,张晓峰.带钢平整轧制板形控制行为及效应 Process Technol,2010,210(6):907 的研究.机械工程学报,2014,50(8):45) 013]Prieto MM,Ruiz L S,Menendez JA.Thermal performance of 3]Dai JT.Deformation of Warping and Longitudinal Buckling for numerical model of hot strip mill run-out table.fronmaking Steel- Thin and Wide Strip [Dissertation].Beijing:University of Sci- making,2001,28(6):474 ence and Technology Beijing,2010 [14]Han H N,Lee J K,Kim H J,et al.Model for deformation,tem- (戴杰涛.薄宽带钢板形翘曲与纵向瓢曲变形行为研究[学位 perature and phase transformation behavior of steels on run-out 论文].北京:北京科技大学,2010) table in hot strip mill.J Mater Process Technol,2002,128(1- 4]Wang H M,Yu W,Su L.et al.Effect of water flow during lami- 3):2166工程科学学报,第 38 卷,第 4 期 200 m 位置. 精轧出口板形仪显示板形良好. 生产该 带钢尾部时开机架间冷却水,两种手段同时起作用; 生 产带钢头部时没有开机架间冷却水,只有层流冷却边 部遮挡起作用. 从图中可以看出带钢头部有明显浪 形,而尾部没有. 综合统计结果和浪形测量结果表明, 堵塞机架间冷却水喷管和层流集管的边部喷嘴可以减 少高强带钢浪形,堵塞机架间冷却水边部喷嘴更加有 效. 根据板形理论,即该优化手段可以实现残余应力 减量化. 5 结论 ( 1) 根据实验和现场测量得到的数据,对模型调 整校正,得到 700 MPa 级高强带钢层流冷却过程的有 限元模型,该模型可以较准确地计算带钢层流冷却过 程中的温度、相变和应力. ( 2) 该有限元模型可以通过修改边界条件和初始 条件,得到新的模型,模拟不同工况对应的带钢,以计 算各工况对残余应力减量化的影响规律,对比得出最 有效的优化手段. ( 3) 通过两种优化工艺对密集冷却工艺下生产的 高强带钢残余应力减量化的影响对比发现,要减小该 种高强带钢的残余应力,减小层流冷却的初始温差效 果好于边部遮挡的效果. 参 考 文 献 [1] Wang G D. The new generation TMCP with the key technology of ultra fast cooling. Shanghai Met,2008,30( 2) : 1 ( 王国栋. 以超快速冷却为核心的新一代 TMCP 技术. 上海金 属,2008,30( 2) : 1) [2] Zhang Q D,Li B,Zhang X F. Research on the behavior and effects of flatness control in strip temper rolling process. J Mech Eng,2014,50( 8) : 45 ( 张清东,李博,张晓峰. 带钢平整轧制板形控制行为及效应 的研究. 机械工程学报,2014,50( 8) : 45) [3] Dai J T. Deformation of Warping and Longitudinal Buckling for Thin and Wide Strip [Dissertation]. Beijing: University of Sci￾ence and Technology Beijing,2010 ( 戴杰涛. 薄宽带钢板形翘曲与纵向瓢曲变形行为研究[学位 论文]. 北京: 北京科技大学,2010) [4] Wang H M,Yu W,Su L,et al. Effect of water flow during lami￾nar flow rate on the heat transfer coefficient of a hot steel plate cooling. J Univ Sci Technol Beijing,2012,34( 12) : 1421 ( 汪贺模,余伟,苏岚,等. 水流量对热轧钢板层流冷却过程 对流换热系数的影响. 北京科技大学学报,2012,34 ( 12) : 1421) [5] Su Y P. Research on Internal Stress and Buckling During Laminar Cooling of Hot Rolled Steel Strip [Dissertation]. Beijing: Univer￾sity of Science and Technology Beijing,2009 ( 苏艳萍. 热轧带钢层流冷却过程内应力及屈曲变形研究[学 位论文]. 北京: 北京科技大学,2009) [6] Wang X D,He A R,Yang Q,et al. Temperature and phase transformation coupling prediction model of hot rolled strip cooled on the run-out table. J Univ Sci Technol Beijing,2006,28( 10) : 964 ( 王晓东,何安瑞,杨荃,等. 热轧带钢层流冷却过程中温度 与相变耦合预测模型. 北京科技大学学报,2006,28 ( 10) : 964) [7] Chen Y L,Yu W,Su L,et al. Analysis of residual stress in hot rolled steel strip during laminar cooling. Trans Mater Heat Treat, 2010,31( 6) : 155 ( 陈银莉,余伟,苏岚,等. 热轧带钢层流冷却过程中残余应力 分析. 材料热处理学报,2010,31( 6) : 155) [8] Yi H L,Wang X N,Wang G D,et al. Microstructure and me￾chanical properties of 710 MPa hot-rolled high-strength steel. J Northeast Univ Nat Sci,2009,30( 10) : 1421 ( 衣海龙,王晓南,王国栋,等. 710 MPa 级热轧高强钢的组 织性能. 东北大学学报( 自然科学版) ,2009,30( 10) : 1421) [9] Yoshida H. Analysis of flatness of hot rolled steel strip after cool￾ing. Trans Iron Steel Inst Jpn,1984,24( 3) : 212 [10] Umemoto M. Continuous cooling transformation kinetics. Weld Int,1990,4( 12) : 939 [11] Han H N,Park S H. Model for cooling and phase transformation behavior of transformation induced plasticity steel on run-out table in hot strip mill. Mater Sci Technol,2001,17( 6) : 721 [12] Cho H H,Cho Y G,Im Y R,et al. A finite element analysis for asymmetric contraction after coiling of hot-rolled steel. J Mater Process Technol,2010,210( 6-7) : 907 [13] Prieto M M,Ruiz L S,Menendez J A. Thermal performance of numerical model of hot strip mill run-out table. Ironmaking Steel￾making,2001,28( 6) : 474 [14] Han H N,Lee J K,Kim H J,et al. Model for deformation,tem￾perature and phase transformation behavior of steels on run-out table in hot strip mill. J Mater Process Technol,2002,128( 1- 3) : 2166 · 065 ·
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