湿砂型铸造是以型砂和芯砂为造型材料制成铸型，液态金属在重力下充填铸型来生产铸件的铸造方法。钢、铁和大多数有色合金铸件都可用砂型铸造方法获得。
对影响湿砂型浇注时的刚度的各种因素进行了分析。
The factors influencing the rigidity of green sand mold during pouring were analyzed.
指出型砂强度和砂型的紧实程度是常温下影响湿砂型刚度的主要因素。
It was pointed out that the strength of molding sand and compactness of sand mold is the key factors influencing the rigidity of green sand mold under normal temperature.
本文从理论和实践的两个角度，论述了D型湿砂型表面硬度计的设计思想，定型设计方案。
The ideal of the design and finalized programme of the type-D green mold hardness tester are expounded by the theory and the experiments.
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