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本文详细研究了小型铝合金铸件用石膏型精密铸造的工艺参数及石膏型配方,给出了高尺寸精度控制的主要因素,该工艺浇注出的铝合金铸件尺寸精度达25mm±0.05mm,表面粗糙度Ra=1.25～5μm。
In this paper, the process parameters of gypsum-based precision casting for small aluminum alloy castings and the gypsum-type formula are studied in detail. The main factors of high dimensional accuracy control are given. The dimensional accuracy of the cast aluminum alloy castings is 25mm ± 0.05mm and the surface roughness Degree Ra = 1.25 ~ 5μm.