利用3D打印砂型技术试制压缩机机体铸件

Trial Production of Compressor Body Castings Using 3D Printed Sand Mold Technology

介绍了球墨铸铁压缩机机体铸件的结构及技术要求,详细阐述了采用无模生产方式、运用3D打印技术快速打印砂型、快速生产压缩机机体铸件的一种铸造方法,首件验证合格交付。最后指出:(1)通过使用3D打印技术与传统铸造相结合的生产方式,大大缩短了新产品研发试制周期,较传统生产铸件研发周期至少缩短70%;(2)采用3D打印技术生产砂型,不受结构限制,内腔芯与上层砂芯做成整体,整体打印、施涂,既减少了砂芯数量,又降低了组芯合箱难度,有效控制了尺寸精度。

The structure and technical requirements of nodular iron compressor body castings were introduced.A casting method that employed a mold-less production approach and utilizes 3D printing technology for rapid sand mold production was elaborated.The first sample passed verification and was delivered successfully.Finally it was pointed out:(1)Combining 3D printing technology with traditional casting significantly shortened the development and trial production cycle of new products by at least 70%compared to traditional methods.(2)3D printing technology for sand mold production was unrestricted by structure,enabling the integration of internal cores and upper sand cores into a single unit,thus reducing the number of sand cores and simplifying core assembly,effectively controlling dimensional accuracy.