【摘要】 在熔模石骨型精铸件中，研究了不同的石膏和耐火材料、水膏比以及粒度分布对石膏混合料性能的影响。论述了提高熔模石膏型精铸质量的重要性，给出铸件表面质量和精度控制的主要因素。更多还原

【Abstract】 Some main factors affecting properties of gypsum mixture are discussed in this paper,These factorsare quality of gypsum and refractory, ratio of water to gypsum, and particle size distribution. The present workdeals wit h the importance of surface qual it y in plaster mould precision investment casting and the ways ofenstiring the quality.更多还原