关键词：湿型砂；型砂质量；有效膨润土量；有效添加剂量 [gap=930]Key words：green sand；molding sand quality；active bentonite；active addition amount
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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.
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。
In renovation of the foundry shop, the original used sand suction system was dismantled, which caused lower quality of the molding sand.
在车间改造中，去掉了原有的旧砂吸送系统，而导致型砂质量下降。
Casting quality and rejection rate are remarkably affected by the quality and property of molding sand, in the process of clay sand green mold casting.
在粘土砂湿型铸造中，型砂质量和性能对铸件质量、废品率有明显的影响。
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