镁合金真空低压消失模铸造新技术

A New Expendable Pattern Casting Process with Vacuum and Low Pressure for Magnesium Alloy

介绍了一种新的铸造技术——真空低压消失模铸造的工作原理。建立了其在充型过程中的物理模型与数学模型,分析了其铸造工艺的特点及影响因素,以及在铸造高精度、复杂镁合金铸件方面的优势。作为压力铸造、低压铸造的补充,真空低压消失模铸造新技术在铸造高质量和高精度的镁合金铸件中具有广泛的应用前景,另外还可用于铸造高精度、复杂的铝合金铸件。展示了用该新技术铸造成形的复杂的电机壳体、排气管等镁合金铸件。

A new expendable pattern casting (EPC)process, with vacuum and low pressure, was introduced. Its working principle and affecting factors were analyzed, and the filling mould physical and mathematical models were built. The advantages were also shown in casting high precision and complex magnesium alloy parts. The process possesses wide applications for casting high quality and complex parts as the replenishment of die casting process and low pressure casting process, and it can be used not only for magnesium alloys but also for aluminum alloys. Finally, the complicated casting parts (motor shell and exhausting tube, and so on) in magnesium alloy by the new process were shown.