铸造用湿型表面硬度计校准方法及不确定度分析  

Calibration method and influence analysis of wet surface durometer for casting

作　　者：金晶 JIN Jing

机构地区：[1]福建省计量科学研究院,福建福州350003

出　　处：《木工机床》2024年第4期23-25,39,共4页Woodworking Machinery

摘　　要：铸造用湿型表面硬度计主要用于测量铸造湿砂型的表面硬度,砂型硬度值可以反映砂型的紧实程度,广泛用于建筑工程领域。文章阐述了铸造用湿型表面硬度计校准方法,分析了各不确定度分量主要来源,结合测量实例具体数据,分析评定了扩展不确定度,得出该项目的校准测量能力,为铸造用湿型表面硬度计在建筑工程行业的应用提供参考。Wet mold surface hardness tester for casting is mainly composed of indenter,indicator,test force mechanism and other components.It is used to measure the surface hardness of wet mold casting.It is widely used in the field of construction engineering to check the compactness of sand mold through the hardness value of sand mold.Therefore,this paper introduces the working principle and application of wet surface durometer for casting,establishes the measuring model of the calibration results of wet surface durome-ter for casting,analyzes the main sources of each uncertainty component,analyzes and evaluates the synthetic uncertainty combined with the concrete data of measurement examples,calculates each uncertainty component and obtains the synthetic uncertainty and ex-tended uncertainty.Finally,the calibration and measurement capability of the project can be obtained,which provides technical sup-port for the construction engineering industry.

关 键 词：铸造用湿型表面硬度计 校准方法 性能影响 测量 

分 类 号：TG247[金属学及工艺—铸造]