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镁合金轮毂低压铸造模具冷却性能模拟分析

The Simulation Analysis of Cooling Capacity in Mold during LPDC of Magnesium Wheel

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【作者】 王迎春王伟明李大永彭颖红曾小勤

【Author】 WANG Ying-chun~1, WANG Wei-ming~1, LI Da-yong~1, PENG Ying-hong~1, ZENG Xiao-qin~2(1. School of Mechanical Eng., Shanghai Jiaotong Univ., Shanghai 200030, China;2. School of Materials Science and Eng., Shanghai Jiaotong Univ., Shanghai 200030)

【机构】 上海交通大学机械与动力工程学院上海交通大学材料科学与工程学院 上海200030上海200030上海200030

【摘要】 对镁合金轮毂低压铸造模具关键部位的冷却性能进行模拟研究,对比了采用不同冷却方式所产生的凝固缩孔缺陷.研究发现,单独设置侧模冷却管道是一种有效的冷却方式,能够很好地减小镁合金轮毂低压铸造凝固过程中在轮辐与轮辋连接处所产生的合金液体孤岛体积,使其位置向轮心方向移动,进而降低这些区域的缩孔缺陷.通过对改进冷却性能后的轮毂实施静力学强度分析,对比改善前后轮毂应力应变分布情况,表明了模具冷却性能改善的有效性.

【Abstract】 The cooling performance at the key regions of mold during the low pressure die casting(LPDC) of magnesium wheel was investigated. Through analyzing the shrinkage defects generated under the conditions of various cooling modes, it was found the cooling pipe system set in the side mold alone is a valid way to enhance the cooling capacity at the rim/spoke junction areas. The mode can lower the generation of hot spots at the junctions, so the shrinkage defects at these regions are limited obviously. Furthermore, the statics analysis was carried out to compare the distribution of stress and strain between the former and current product. The result shows the cooling mode selected is effective.

【基金】 国家高技术研究发展计划(863)资助项目(2002AA331120)
  • 【文献出处】 上海交通大学学报 ,Journal of Shanghai Jiaotong University , 编辑部邮箱 ,2005年07期
  • 【分类号】TG233
  • 【被引频次】8
  • 【下载频次】290
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