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讨论了VRH水玻璃砂的性能及影响因素,指出水玻璃砂铸型失水率与强度的关系,进一步说明VRH-CO_2水玻璃砂铸型对水分敏感性小于传统的烘干法和CO_2法铸型。
The properties and influencing factors of VRH sodium silicate sand were discussed. The relationship between the water loss rate and the strength of sodium silicate sand mold was pointed out. The results showed that the water sensitivity of VRH-CO 2 sodium silicate sand mold was less than that of the traditional drying method and CO_2 method type.