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摘要：
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对某6061铝合金自行车后花毂锻件的温挤压成形技术进行研究。首先通过数值模拟分析了坯料在模具型腔的定位问题,以便于坯料能顺利塑性变形转移到凸缘部分;然后通过对速度场、应力场、应变场、变形网格以及载荷-行程曲线的系统分析,获取了在一定条件下金属坯料在模具型腔内的塑性流动规律,为该产品温挤压成形工艺方案的详细设计以及如何控制和避免成形过程可能出现的缺陷提供参考依据;并通过实验对工艺方案的可行性进行验证。
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Numerical simulation technology was adopted to analyze the warm extrusion of a bicycle back hub forging part.The position of billet in the mold was discussed first so that material could flow into the flange cavity fluently.Then on the base of analyzing the speed field,stress field,strain field,mesh,and stroke-load curve systematically,the plastic flow rules of metal billet deformed in the mold under certain conditions were acquired.Those rules could provide useful reference for process design and controlling and avoiding defects in plastic deformation.At last,experiment was carried out to validate the feasibility of the process.
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基金项目：
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深圳市模具先进制造技术重点实验室开放基金资助项目(2007001);;
深圳大学青年基金资助项目(200862)
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作者简介：
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参考文献：
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