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国际铸锻技术协会为了研制一种用水玻璃粘结、用无机氟化物硬化的自硬砂体系已进行了试验研究。所获得的结果表明,采用这种方法比用其它无机或有机自硬法好处更明显:容易达到和其它自硬法不相上下的铸件尺寸精度和表面光洁度,型砂的存放期、强度和其它性能十分良好,溃散性比CO_2法好得多。此外,这种方法比其它有机自硬法更为经济,很适用于生产黑色和有色金属铸件的铸型和型芯。
International Foundry Technology Association in order to develop a water glass bonding, with inorganic fluoride hardened self-hardening sand system has been studied. The results obtained show that this method is more advantageous than other inorganic or organic self-hardening methods in that it is easy to achieve casting dimensional accuracy and surface finish comparable to other self-hardening methods, shelf life, strength and other properties of the molding sand Very good, collapsibility is much better than CO_2. In addition, this method is more economical than other organic self-hardening methods and is well suited for the production of molds and cores for black and non-ferrous metal castings.