Vacuum-Pressure Casting Principle
真空压力铸造原理与选型
标签：真空, 加压, 致密, 首饰, 原理
真空压力铸造先在密闭腔抽真空排除型腔气体，再向坩埚施加惰性气体将金属液压入型腔，从而获得高致密度、低气孔的精密铸件。适合贵金属与薄壁复杂件。相比离心铸造，它充型更平稳、氧化更少，但设备成本与维护更高。
Vacuum-pressure casting first evacuates the chamber to remove mould gas, then forces molten metal into the cavity with inert gas pressure, yielding dense, low-porosity precision castings. Ideal for precious metals and thin-wall complex parts. Versus centrifugal casting it fills more gently with less oxidation, but at higher equipment and maintenance cost. ---