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高强度硼钢淬火界面热交换系数的实验与模拟

, PP. 1195-1199

Keywords: 金属材料,硼钢,热冲压,界面热交换系数,反传热模型

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Abstract:

通过测量硼钢B1500HS淬火过程中板料和模具的温度变化曲线,结合有限元分析及反传热模型获得淬火过程中板料与模具间的界面热交换系数(IHTC)与温度的关系。结果表明:板料温度从770℃下降到200℃,IHTC的变化范围在1970~3960W/(m2·K)之间。随着板料温度的降低,IHTC随之降低,但由于材料在410℃时发生奥氏体向马氏体的转变,相变潜热的释放导致IHTC不连续的现象发生。与以距离模具形面下方1mm处作为淬火介质的环境温度相比,以模具形面处作为淬火介质的环境温度得到的IHTC分布规律同前者基本一致,但IHTC的数值较高。

References

[1]  Merklein M, Lechler J. Determination of material and process characteristics for hot stamping processes of quenchable ultra high strength steels with respect to a FE-based process design[J]. SAE Int J Mater Manuf, 2009,1(1):411-426.
[2]  Åkerström P, Oldenburg M. Austenite decomposition during press hardening of a boron steel-computer simulation and test[J]. Journal of Materials Processing Technology, 2006, 174:399-406.
[3]  Tekkaya A E, Karbasian H, Homberg W, et al. Thermo-mechanical coupled simulation of hot stamping components for process design[J]. Computer Aided Engineering, 2007, 1(1):85-89.
[4]  Lee M G, Kim S J , Han H N, et al. Application of hot press forming process to manufacture an automotive part and its finite element analysis considering phase transformation plasticity[J]. International Journal of Mechanical Sciences, 2009, 51(11-12):888-898.
[5]  张志强. 高强度钢板热冲压技术及数值模拟[J]. 热加工工艺,2010(11):103-105. Zhang Zhi-qiang. Hot stamping of high strength steel sheet and its numerical simulation[J]. Hot Working Technology, 2010(11):103-105.
[6]  张志强. B柱热冲压数值分析研究[J]. 锻压技术,2010(3):58-60. Zhang Zhi-qiang. Numerical analysis of B pillar hot stamping[J]. Forging and Stamping Technology, 2010(3):58-60.
[7]  Zhang Zhi-qing, Ye Zhong-chao, Zhang Yi-sheng, et al. Numerical analysis on hot stamping of B pillar reinforcement of automobiles[J]. Advanced Materials Research, 2010 (97-101):282-285.
[8]  Tondini F, Bosetti P, Bruschi S. An experimental-numerical procedure to identify heat transfer coefficient in hot stamping processes[C]∥Proceedings of Euromech, Lisboa, 2009: 1-7.
[9]  Abdulhay B, Bourouga B, Dessain C, et al. Experimental study of heat transfer in hot stamping process[J]. International Journal of Material Forming, 2009, 2(Suppl.1):255-257.
[10]  Merklein M , Lechler J, Stoehr T. Investigations on the thermal behavior of ultra high strength boron manganese steels within hot stamping[J]. International Journal of Material Forming, 2009, 2(Suppl.):259-262.
[11]  李辉平, 贺连芳, 赵国群. 硼钢B1500HS界面传热系数与压力关系的研究[J]. 机械工程学报, 2013(16):77-83. Li Hui-ping, He Lian-fang, Zhao Guo-qun. Research on the surface heat transfer coefficient depending on surface pressure of boron steel B1500HS[J]. Journal of Mechanical Engineering, 2013(16): 77-83.
[12]  顾剑锋,潘建生,胡明娟. 淬火冷却过程中表面综合换热系数的反传热分析[J]. 上海交通大学学报, 1998, 32(2):19-22. Gu Jian-feng, Pan Jian-sheng, Hu Ming-juan. Inverse heat conduction analysis of synthetical surface hear transfer coefficient during quenching process[J]. Journal of Shanghai Jiaotong University,1998, 32(2):19-22.
[13]  刘庄,吴肇基,吴景之,等. 热处理过程的数值模拟[M]. 北京:科学出版社,1996.

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