摘要
目的研究分析两种铸造模拟软件在钛合金铸件模拟方面的差异及准确性。方法利用华铸CAE和ProCast软件对某钛合金铸件的温度场、流场和缩孔缺陷进行数值模拟。为了验证模拟结果的准确性,进行实际浇注验证实验,并通过X射线探伤,检测缩孔缺陷的位置。结果华铸CAE网格剖分简单、计算时间快,但是模型边界拟合较差,ProCast软件网格划分复杂、计算时间较长,但是网格可以较好地反映模型形状,模型边界拟合较高。结论两种软件对温度场的模拟差异不大,凝固顺序基本一致,两种模拟软件的缩孔预测结果和实际缩孔位置吻合性都较好,说明两种数值模拟软件可以很好地预测钛合金铸件内缩孔分布。
The paper aims to study differences and accuracy of two kinds of casting simulation software in simulation of ti-tanium alloy castings. Temperature field, flow field and shrinkage cavity defects of a certain titanium alloy casting were numer-ically simulated with Huazhu CAE and ProCast software. To verify accuracy of simulation results, an actual pouring verification experiment was performed. The position of shrinkage defect was detected by X-ray inspection. Huazhu CAE was simple in grid generation and its calculation was fast; but the model boundary was poorly fitted. The ProCast software was complex in grid generation and its calculation was long; but the grid could reflect the model shape well, and the calculation accuracy was good. The simulation of the temperature field of the two kinds of software has little difference, and the solidification sequence is basi-cally the same. The simulated shrinkage cavity results of two kinds of software are in good agreement with the actual casting shrinkage cavity position, indicating that the numerical simulation can effectively predict shrinkage cavity distribution in tita-nium alloy casting.
作者
李峰
崔新鹏
王丽娟
南海
周黔
LI Feng;CUI Xin-peng;WANG Li-juan;NAN Hai;ZHOU Qian(Beijing Engineering Research Center of Advanced Titanium Alloys Precision Forming Technology, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;Baimtec Material Co., Ltd., Beijing 100094, China)
出处
《精密成形工程》
2018年第3期163-167,共5页
Journal of Netshape Forming Engineering
