潮模砂日益增长的热负荷，更快的循环时间以及对造型材料质量要求的提高，对型砂制备提出了更高的要求。
The growing thermal load of green sand, the quicker recirculation times and the increased requirements on the quality of molding material make new demands on the molding sand preparation.
本文研究了复合磷酸盐改性水玻璃粘结剂的制备及其型砂的混碾工艺和性能。
This paper deals with the preparation of composite phosphate modified sodium silicate binders and sand mined method and its properties.
用CO_2法硬化水玻璃砂时，影响再生砂制备的型砂性能的主要因素是残留在砂粒表面的碳酸钠盐。
The study of the hardening characteristics of reclaimed CO2 sodium silicate bonded sand shows that the residual sodium carbonate acetate is the primary affecting factor.
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