酯硬化水玻璃干法再生砂应用研究  

Research on Application of Dry Reclaimed Sand to Ester-Curred Sodium Silicate Bonded Sand

作　　者：汪京心[1] 蒋宗宇[1] 王可猷 

机构地区：[1]江苏理工大学材料系

出　　处：《江苏理工大学学报（自然科学版）》1995年第4期42-49,共8页Journal of Jiangsu University of Science and Technology(Natural Science)

摘　　要：采用Ｌ＿８（２＿７）和Ｌ＿（２７）（３￣（１３））正交试验方法，辅以扫描电镜分析，对于法再生砂应用于酯硬化水玻璃自硬砂的硬化特性和工艺性能进行了初步探讨。指出残留醋酸钠盐是主要控制因素。再生砂中适量残留水份有利于性能控制。提出了添加剂Ｌ应用的可行性，具体工艺已经在生产中得到应用。The authors study the hardening characteristics and technological prop- erties of ester-curred sodition silicate bonded sand prepared from dry reclaimed sand by using orthogonal experiment method and SEM. The results show that the residual sodium acetate is the primary factor affecting on hardening,that proper moisture content in reclaimed sand is advantageous to hardening and that the addi- tive material“L”is applicable for hardening,These techniques are satisfactorily tissued in steel casting foundry.

关 键 词：自硬砂 水玻璃砂 再生 助剂 硬化 

分 类 号：TG221.2[金属学及工艺—铸造]