低压铸造工艺的设计论文

摘 要本文运用反重力铸造技术—低压铸造来对铝合金铸件带轮的铸造工艺进行方案设计，包括分型面、浇注位置的选择、各项铸造工艺参数的确定以与浇注系统的设计。根据铸件形状较复杂的特点，在进行实验浇注时设计了两个浇注方案即两个浇道或者一个浇道，并同时进行调压和重力铸造浇注，以方便比较。根据实际零件建立了铸件的三维模型，并用View-cast 铸造模拟软件对铝合金铸件带轮的充型过程进行了模拟计算。模拟结果显示，充型过程平稳，没有明显的液相起伏、飞溅。根据数值模拟结果并结合理论分析，铸件中没有缩孔、缩松等缺陷，铸造工艺方案和浇注工艺参数的设计合理。关键词：低压铸造；铸造工艺；实验浇注；充型过程；数值模拟AbstractIn this paper, anti-gravity casting technology, low pressure casting technology was used to complete the design of the casting of an aluminum alloy casting wheel, which include choice of Sub-surface and casting position, determining all of the parameters of the casting process, and the design of the casting system. For the complex shape of the casting, when conducting experiments was designed to use two runners and one ingate for casting in one time, and at the same time, surge and gravity casting was used to make it easier to compare. For sand shell moulding, the mode of same time freezing was generally used. Build the Three-dimensional model of the casting, then simulate and calculate the filling process of casting. Form the results, it was saw that the process was steady without apparent phase fluctuations or splash. From the result we can see that there was no defect such as shrinkage, so the design was perfect.Keywords：Low pressure die casting; casting process; experimental cast; filling process; numerical simulation.目录摘要 IAbstractII第 1 章绪论 11.1 低压铸造概述 11.1.1 低压铸造的工艺过程 11.1.2 低压铸造的工艺特点 21.1.3 低压铸造的工艺分类 41.2 国外低压铸造行业的进展概况 51.2.1 我国低压铸造行业...