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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。
View-Cast software was used to simulate the low-pressure casting process of aluminum alloy wheels. The distribution of temperature field in solidification process was studied. The possible defects of the castings in the connection between spoke and rim were predicted. The formation mechanism and the distribution of defects were analyzed Rules, and put forward the measures to suppress the defects. The results show that the cooling pipe is provided on the upper and lower die to improve the cooling capacity. It is proved that the tubular cooler is an effective way to reduce the defects at the connection between rim and spoke. Through the actual aluminum alloy wheel casting X-ray detection and mechanical properties of the test, the simulation results were further verified.