摘要
针对铝合金摩托车发动机支架在压铸生产中充型不合理导致模具局部温度过热以及铸件充型远端容易出现冷隔缺陷等问题,运用数值模拟方法对压铸工艺过程进行分析,发现内浇道结构不合理是导致以上问题的主要原因。据此,对内浇道的设计进行了优化,同时改进了模具结构。实际生产表明,改进后的内浇道形成了较理想的流态,使模具温度分布均匀,同时消除了铸件充型远端的冷隔缺陷。
The filling process was simulated to analyze local overheat in die resulting from irrational filling and cold shut occurred in far-end in aluminum alloy engine bracket.The results indicate that the defects are caused by irrational ingate design.Based on above analysis,the ingate design and the die structure have been optimized.The production verifies that the desirable filling can be formed in the optimized ingate,which plays the uniform temperature distribution in the die and eliminates the cold shut in filling far-end in the bracket.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2007年第6期439-441,共3页
Special Casting & Nonferrous Alloys
关键词
铝合金
压铸件
数值模拟
内浇道
工艺优化
Aluminum Alloy,Die Castings,Numerical Simulation,Ingate,Process Optimization
