The ideal of the design and finalized programme of the type-D green mold hardness tester are expounded by the theory and the experiments.
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。
Influence of the initial temperature fields and mold hardness on the shrinkage defect of ductile iron casting by EPC process was mainly investigated in this paper.
本文主要讨论了初始温度场和铸型硬度对消失模铸造球墨铸铁件收缩缺陷的影响。
The mold hardness under different vacuum degree was tested. The results showed that the mold hardness of EPC process was higher than that of green sand mold and was more uniformly distributed.
不同真空度下消失模铸型硬度的测试结果表明，消失模铸型的硬度高于普通湿型砂铸型，并且硬度分布更均匀。
Mold base to be minimum hardness of 165 BHN.
模座的最低硬度为165布氏硬度。
Moreover, the variation law of mold surface hardness and interface heat transfer coefficient were studied.
另外，研究了消失模铸造法铸型表面硬度、界面换热系数的变化规律。
Features of this process have been demonstrated from the good characteristics and excellently even hardness of the sand mold, and low noise level detected.
以该法的砂型性能良好与砂型硬度高度均匀以及噪声测定水平，来显示此法的特色。
Such as pills, tablets should be complete and smooth appearance, hardness, suitable, no debris, adhesion, color mold and so on.
如丸剂、片剂的外观应完整光洁、硬度适宜，无碎片，粘连、变色发霉等现象。
The results show that the strength and hardness of the mold produced by this method are much higher than those of normal sand mold, suitable for producing high precision thin wall castings.
结果表明：此工艺方法生产的铸型，其强度、硬度远高于一般铸型，适合于生产尺寸精度高的铸件。
Mold base to be minimum hardness of165 BHN.
模座的最低硬度为165布氏硬度。
All materials used in mold construction are to correspond to the material list and are to be stamped accordingly on the back or sides of units (Type and R. C. hardness).
模具所有结构件的材料必须符合材料清单，并且在背面或侧面刻印材料型号以及HRC硬度。
All materials used in mold construction are to correspond to the material list and are to be stamped accordingly on the back or sides of units (Type and R. C. hardness).
模具所有结构件的材料必须符合材料清单，并且在背面或侧面刻印材料型号以及HRC硬度。
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