摘要
采用有限元模拟仿真软件结合正交实验方法对咖啡机顶盖压铸成形工艺进行数值模拟,研究了压铸工艺参数对模具热疲劳的影响。得出浇注温度660℃、模具预热温度220℃、压射比压50 MPa、压射速度5 m/s为最佳的一组工艺参数,使试验指标σmax平均值σmax最小,模具的热疲劳趋势最低,零件的成形质量最佳。试验结果验证了该优化设计对减少模具的热疲劳趋势的可行性,对相近结构压铸件的生产具有一定的指导意义。
In order to study the effect of die casting parameters on the die thermal fatigue,the die casting process of coffee machine cover was simulated by finite element simulate software and orthogonal experiment.According to the simulation results,the optimized processing parameters are pouring temperature 660 ℃,mould pre-heated temperature 220 ℃,injection pressure 50 MPa and injection speed 5 m/s.Under these process parameters,the experimental index σmax became low,the trend of mold fatigue was reduced and the quality of casting was improved.The experiment results validate the feasibility of this optimization on reducing the thermal fatigue of the die,and it can be a guidance for production of similar die casting parts.
出处
《铸造》
CAS
CSCD
北大核心
2010年第9期899-902,907,共5页
Foundry
基金
教育部科技部广东省产学研专项(2009B090600006)
关键词
热疲劳
正交实验
压铸
数值模拟
thermal fatigue
orthogonal experiment
die casting
numerical simulation
