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铝合金摩托车发动机左箱体压铸工艺数值模拟与优化
Numerical Simulation and Optimization of Die Casting Process for Left Motorcycle Engine Box Casting of Aluminum Alloy
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- DOI:
- 作者:
- 童帮华 明玥 游国强
TONG Banghua;MING Yue;YOU Guoqiang
- 作者单位:
- 四川跃镁镁业科技有限公司 重庆大学材料科学与工程学院 国家镁合金材料工程技术研究中心
Sichuan Yuemei Magnesium Technology Co.,Ltd.,Nanchong 637800,China;School of Materials Science andEngineering,Chongqing University,Chongqing 400000,China;National Research Center for Magnesium Alloy MaterialsEngineering,Chongqing 400000,China
- 关键词:
- 铝合金 压铸 数值模拟 优化
aluminum alloy die casting numerical simulation optimization
- 摘要:
- 基于正交试验方法,运用数值模拟软件对铝合金摩托车发动机左箱体压铸工艺的充型凝固过程进行数值模拟。结果表明,快压射速度越大,金属液充满型腔的时间越短,形成的氧化夹杂越少;模具温度越高,金属液凝固时间越长,晶粒尺寸越大;4个因素对铸件缩孔缩松、空气压力影响程度相近,缩孔缩松主要分布在铸件孔周围等壁厚较大的区域,空气压力分布较为均匀。Based on the orthogonal test method, numerical simulation software was used to simulate the solidification process of the left box of aluminum alloy motorcycle engine. The results show that the injection velocity is faster, the time for the liquid metal to fill the cavity is shorter, the oxide inclusions are more less. The mold temperature is higher, the solidification time of liquid metal is longer and the grain size is larger. The four factors have similar influence on shrinkage cavity and porosity of casting and air pressure. Shrinkage cavity and porosity are mainly distributed in regions with large wall thickness around casting holes, and the air pressure distribution is relatively uniform.