|
Abstract：
|
|
The hot stamping die with a cooling system was designed to investigate the hot stamping process of the boron alloy steel sheet by experiment, and the influences of contact state between the blank and die on the mechanical properties of ultra-high strength steel were analyzed. The results show that comparing with stamping at room temperature, the springback angles are greatly reduced after hot stamping to effectively improve the dimensional precision of parts, and the tensile strength and yield strength of the boron alloy steel sheet are obviously improved after hot stamping to reach around 1400 MPa and 1000 MPa respectively. In addition, it is found that the mechanical properties of tensile strength and yield strength and the martensitic microstructures of the hot stamped part show inhomogeneous phenomenon due to the influence of the cooling condition at the blank/mold interface. Thus, the sidewall of the part is of higher tensile strength and lower elongation compared with other locations.
|
|
Funds：
|
|
湖南省自然科学基金资助项目(2018JJ2681)
|
|
AuthorIntro：
|
|
作者简介：邹伟(1991-)，男，硕士研究生
E-mail：429606865@qq.com
通讯作者：张立强(1978-)，男，博士，副教授
E-mail：21384881@qq.com
|
|
Reference：
|
［1］王敏，奚建胜，张春，等. 硼钢板热冲压过程马氏体相变预测
［J］. 塑性工程学报，2016，23(5): 120-124.
Wang M，Xi J S，Zhang C，et al. Prediction of martensitic transformation in hot forming of boron steel sheet
［J］. Journal of Plasticity Engineering，2016，23(5): 120-124.
［2］王敏，张春，张宇，等. 汽车高强度钢纵梁热冲压实验研究
［J］. 中国机械工程，2016，27(3): 391-397.
Wang M，Zhang C，Zhang Y，et al. Experiments on hot stamping of car carling of high strength steel
［J］. China Mechanical Engineering，2016，27(3): 391-397.
［3］郑钢，魏良庆. 高强度钢汽车纵梁的冲压成形模拟和回弹补偿
［J］. 锻压技术，2016，41(2): 64-67.
Zheng G，Wei L Q. Stamping simulation and springback compensation for automobile rail of high strength steel
［J］. Forging & Stamping Technology，2016，41(2): 64-67.
［4］Naderi M，Ketabchi M，Abbasi M，et al. Analysis of microstruture and mechanical properties of different high strength carbon steel after hot stamping
［J］. Journal of Materials Processing Technology，2011，211: 1117-1125.
［5］肖海峰，王敏，张春，等. 超高强度钢板U形件热成形数值模拟及实验研究
［J］. 材料科学与工艺，2016，22(6): 107-112.
Xiao H F，Wang M，Zhang C，et al. Numerical and experimental study on hot forming of U-beam of ultra high strength steel sheet
［J］. Materials Science and Technology，2016，22(6): 107-112.
［6］Liu H，Jin X，Han D，et al. Martensitic microstructural transformations from the hot stamping，quenching and partitioning process
［J］. Materials Characterization，2011，62(2):223-227.
|
|
Service：
|
|
【This site has not yet opened Download Service】【Add
Favorite】
|
|
|
Copyright Forging & Stamping Technology.All rights reserved