铝合金气缸盖铸造气孔缺陷分析及解决方法
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摘要
某型增压发动机铝合金气缸盖采用金属型重力倾转浇注铸造工艺生产时,在凸轮轴座经常出现气孔缺陷。通过CAE铸造工艺模拟,产品结构分析等,找出了气孔缺陷形成的原因。通过优化气缸盖结构、调整铸造工艺参数等措施,消除了气缸盖铸件气孔缺陷,提高了气缸盖铸件出品率,取得了良好的经济效益。
When the pressurized aluminum cylinder heads were poured using gravity inclining method, the blowhole defects often occurred at the camshaft seat of cast aluminum cylinder heads. Through analyzing the causes of defect formation and CAE simulation, as well as optimizing the structure of cylinder head and adjusting the pouring process parameters, the blowhole defects at the camshaft seat of cast aluminum cylinder heads were eliminated quite well, which not only improved the yield of castings, but also achieved the better economic benefits.
When the pressurized aluminum cylinder heads were poured using gravity inclining method, the blowhole defects often occurred at the camshaft seat of cast aluminum cylinder heads. Through analyzing the causes of defect formation and CAE simulation, as well as optimizing the structure of cylinder head and adjusting the pouring process parameters, the blowhole defects at the camshaft seat of cast aluminum cylinder heads were eliminated quite well, which not only improved the yield of castings, but also achieved the better economic benefits.
引文
[1]严青松,余欢,魏伯康,等.汽车铝合金缸盖铸件缺陷分析及控制[J].失效分析与防护,2009,4(1):30-33.
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[2]蔡启舟,骆海贺,魏伯康,等.铝合金气缸盖铸造缺陷分析及对策[J].特种铸造及有色合金,2007(S1):70-72.
[3]甄广北.铝合金气缸盖气密性缺陷的改进[J].铸造,2017,66(6):639-641.
[4]李智华,邱茂赞,何杰仁.气缸盖铸件气孔缺陷的探讨[J].铸造工程,2001(2):36-37.
[5]张茂功.工艺因素对康明斯气缸盖气孔缺陷的影响[J].铸造,1998(4):30-32.