某汽车雨刮器臂在疲劳测试过程中出现断裂,发现断裂位置存在缩孔和气孔缺陷。借助铸造CAE软件对产品现有模具设计进行了模拟分析,发现缺陷产生的原因并提出对策。通过多次对模具方案的修改并模拟,得到最佳方案,并在模具上实施。经雨刮器臂疲劳测试验证,未再发生断裂,从而提高了产品品质。 An automobile wiper arm fractured during the fatigue test and found that there were shrinkage holes and blowhole defects in the fracture position. With the help of casting CAE software, the existing mold design of the product was simulated and analyzed, the causes of the defects were found out and the countermeasures were put forward. By repeatedly modifying and simulating the mold plan, the best plan is obtained and implemented on the mold. After wiper arm fatigue test to verify that there is no recurrence of fracture, thereby enhancing product quality.