石膏型水性粘结剂型壳的显微组织与性能研究  

Properties and Microstructure of Gypsum Waterborne Binder Shell

作　　者：许桂平 李涛 刘宝光 邱保强 王旭 XU Guiping;LI Tao;LIU Baoguang;Qiu Baoqiang;WANG Xu(Shanghai Composite Materials Technology Co., Ltd., Shanghai 201100, China;Shanghai Aerospace Resin Matrix Composite Materials Engineering Technology Research Center, Shanghai 201100, China)

机构地区：[1]上海复合材料科技有限公司,上海201100 [2]上海航天树脂基复合材料工程技术研究中心,上海201100

出　　处：《铸造技术》2019年第10期1096-1099,共4页Foundry Technology

摘　　要：以石膏型熔模精铸生产空心金属艺术品工艺过程为例,研究了填料、添加剂及水性硅溶胶粘结剂对石膏型壳性能的影响,并通过对显微组织的观察分析了不同配方下石膏型壳,最后得出使其综合性能最佳的配方。此配方可增强石膏型壳的透气性,提高石膏型壳的力学性能和表面质量,减小石膏型壳的开裂倾向。The process of producing hollow metal artwork by gypsum mould investment casting was taken as an example.The influence of filler, additive and water-based silica sol binder on the properties of gypsum shell was studied. By observing and analyzing the microstructure of the gypsum shell under different formulations, the formula with the best comprehensive performance was obtained. This formula can enhance the air permeability of gypsum shell, improve the mechanical properties and surface quality of gypsum shell, and reduce the cracking tendency of gypsum shell.

关 键 词：石膏型 水溶性硅溶胶 型壳性能 配方 显微组织 

分 类 号：TG249[金属学及工艺—铸造]