自硬砂在消失模铸造中的应用

Application of Self-hardening Sand to Lost-wax Casting

介绍了自硬砂制作浇口杯、预填自硬砂和制作异形铸件的支撑砂胎在消失模铸造中的应用并解决了铸件质量问题的实例。对比了CO2水玻璃砂和呋喃树脂砂在应用中的优缺点。在消失模铸造中，可根据铸造工艺、生产成本和取材难度等合理的选择自硬砂。

Applications of runner bush made of a self-hardening sand, prepacking self-hardening sand and supporting close-over used in making shaped castings to lost-wax casting, as well as an improvement on casting quality, were introduced. Merits and demerits of CO2 water glass sand in the use were compared with those of furan resin bonded sand. In the lost-wax casting, different self-hardening sands may be selected on the basis of casting process, production cost and difficulty degree of gaining the materials.