| Mathematical model of determination of die bearing length in design of aluminum profile extrusion die |
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| 引用本文： | 闫洪,王高潮,夏巨谌,李志刚. Mathematical model of determination of die bearing length in design of aluminum profile extrusion die[J]. 中国有色金属学会会刊, 2004, 14(5): 890-895 |
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| 作者姓名： | 闫洪 王高潮 夏巨谌 李志刚 |
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| 作者单位： | [1]InstituteofMechanical-ElectricalEngineering,NanchangUniversity,Nanchang330029,China [2]NanchangInstituteofAeronauticalTechnology,Nanchang330034,China [3]StateKeyLaboratoryofDieTechnology,HuazhongUniversityofScienceandTechnology,Wuhan430074,China |
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| 基金项目： | 国家自然科学基金，the Material Science and Engineering Center Foundation of Jiangxi Province，国家重点实验室基金 |
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| 摘 要： | Based on the finite element simulation of profile extrusion process, the effect of local extrusion ratio, die bearing area and the distance between extrusion cylindrical center and local die orfice center on mental flow velocity was investigated. The laws of deformed metal flow on profile extrusion process were obtained. The smaller the local extrusion ratio, the faster the metal flow velocity； the smaller the area of die bearing, the faster the metal flow velocity； the smaller the distance of position of local die orifice(the closer the distance of position of local die orifice from extrusion cylindrical axis), the faster the metal flow velocity. The effect of main parameters of die structure on metal flow velocity was integrated and the mathematical model of determination of die bearing length in design of aluminum profile extrusion die was proposed. The calculated results with proposed model were well compared withthe experimental results. The proposed model can be applied to determine die bearing length in design of aluminum profile extrusion die.
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| 关 键 词： | 数字模拟技术 铝 拉模孔定径带 挤出成型工艺 模具 |
Mathematical model of determination of die bearing length in design of aluminum profile extrusion die |
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| YAN Hong. Mathematical model of determination of die bearing length in design of aluminum profile extrusion die[J]. Transactions of Nonferrous Metals Society of China, 2004, 14(5): 890-895 |
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| Authors: | YAN Hong |
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| Abstract: | Based on the finite element simulation of profile extrusion process, the effect of local extrusion ratio, die bearing area and the distance between extrusion cylindrical center and local die orfice center on mental flow velocity was investigated. The laws of deformed metalflow on profile extrusion process were obtained. The smaller the local extrusion ratio, the faster the metal flow velocity; the smaller the area of die bearing, the faster the metal flow velocity; the smaller the distance of position of local die orifice(the closer the distance of position of local die orifice from extrusion cylindrical axis), the faster the metal flow velocity. The effect of main parameters of die structure on metal flow velocity was integrated and the mathematical model of determination of die bearing length in design of aluminum profile extrusion die was proposed. The calculated results with proposed model were well compared with the experimental results. The proposed model can be applied to determine die bearing length in design of aluminum profile extrusion die. |
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| Keywords: | profile extrusion finite element simulation mathematical model die bearing length |
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