一、概 述 近十几年来,航空工业和电子技术的发展,导致零件的形状越来越复杂,尺寸精度和表面光洁度的要求越来越高。因此,铝合金石膏型熔模铸造工艺受到人们重视。利用熔模石膏型生产电子设备的壳体、印刷电路板、散热片等高尺寸精度和形状复杂的薄壁铸件已成为可能。 First, an overview Over the past decade, the aviation industry and the development of electronic technology, leading to more and more complex shape parts, dimensional accuracy and surface finish higher and higher requirements. Therefore, aluminum alloy gypsum investment casting process has received great attention. It has become possible to manufacture thin-walled castings of high dimensional precision and shape, such as housings, printed circuit boards, heat sinks and the like, of cast electronic gypsum molds.