研究不同类型石膏和填料对熔模铸造造型材料性能的影响表明,石膏 -煤矸石系材料具有优良的综合性能,包括铸型加热过程中较小的线量变化和较高的强度。所浇注的铸件质量也优于通常采用的石膏-石英系造型材料。采用β石膏和煤矸石粉作为原材料,具有良好的技术经济效果,可在铝合金精密铸件生产中推广应用。 The effects of different types of gypsum and filler on the performance of investment casting modeling materials show that the gypsum - gangue materials have excellent comprehensive performance, including smaller line changes and higher strength during the heating process of the mold. Casting castings are also superior in quality to the commonly used gypsum-quartz molding materials. The use of β gypsum and coal gangue as raw material, has a good technical and economic results, can be used in the production of precision castings aluminum promotion.