摘要
运用View-Cast软件对铝合金车轮的低压铸造过程进行了数值模拟,研究了凝固过程中温度场的分布,预测铸件在轮辐与轮辋连接部位可能出现的缺陷,分析了缺陷形成机理以及缺陷的分布规律,并提出了抑制缺陷产生的措施。研究结果表明,在上模和下模上设置冷却管改善了冷却能力,证明了管形冷却器是减少轮辋与轮辐连接处缺陷的有效方法。通过对实际铝合金车轮铸件X射线探测和力学性能的测试,模拟结果进一步被验证了。
The low pressure die casting （LPDC） process of an aluminum alloy wheel was simulated by using the numerical simulation software View-Cast. By analyzing solidification stage of the LPDC process, the temperature field of castings was studied. The potential shrinkage defects at the rimlspoke junctions were predicted. The formation mechanism, as well as the distribution rule of the defects, was also studied. A solution towards eliminating such defects was presented. The study results show that the cooling capacity of the mold is improved by installing tube cooler both in the lower mold and top mold. It is proven that the tube cooler is a valid way to reduce the defects at the rimlspoke junctions. Through the X-ray detection and mechanical properties test of the aluminium alloy wheels casting,the simulation results were verified further.
出处
《热加工工艺》
CSCD
北大核心
2013年第7期60-62,共3页
Hot Working Technology
关键词
铝合金
低压铸造
数值模拟
缺陷
aluminium alloy
low pressure die casting
numerical simulation
defects
