摘要
基于CAE技术研究了铝合金汽车支架压铸件的凝固过程,对可能出现的铸造缺陷进行预测,获得了零件成型过程的温度场分布和凝固时间与温度的关系。在有无水冷的两套方案中选择不同部位节点,研究不同节点凝固过程中的温度变化规律。结果表明:没有增设水冷的方案中,铸件凝固顺序混乱,温度梯度分布不合理,铸件成形过程容易产生铸造缺陷;增设水冷设置的方案中,铸件各节点冷却速度得到提高,同时保持良好的凝固顺序,铸造缺陷显著下降。
The solidification process of aluminum alloy bracket die castings was carried out based on CAE technology. Positions of casting defect were predicted, and the temperature field and the relationship between the solidification time and the temperature were obtained. The temperature distribution of nodes in the casting during solidification process with different schemes was also studied. The results showed that the solidification sequence is disorder and the temperature gradient distribution is not reasonable for the first scheme without water-cooling, which would cause many casting defects; in the second scheme with water-cooling, the cooling rate of the inner nodal points are imoroved and solidification seauence is order, and the casting defects remarkable decrease.
出处
《南昌大学学报(工科版)》
CAS
2013年第1期45-48,共4页
Journal of Nanchang University(Engineering & Technology)
基金
国家自然科学基金资助项目(51165032)
江西省自然科学基金资助项目(20122BAB216017)
江西省高等学校科技创新团队资助项目(00008713)
江西省铜钨新材料重点实验室开放基金项目(2011-TW-03)
关键词
铝合金
压铸
CAE
水冷
凝固场
aluminum alloy
die casting
CAE
water-cooling
solidification fraction