维氏硬度计稳定性测试  

Stability test of Vickers hardness tester

作　　者：夏冰[1] 陈斌[1] 后宗保[1] 赵志海[1] 王艳阳 付声丽 XIA Bing;CHEN Bin;HOU Zongbao;ZHAO Zhihai;WANG Yanyang;FU Shengli(Physics Station of Testing Center,Maanshan Iron and Steel Co.,Ltd.,Maanshan 243000,China)

机构地区：[1]马鞍山钢铁股份有限公司检测中心物理站,安徽马鞍山243000

出　　处：《物理测试》2021年第1期37-39,共3页Physics Examination and Testing

摘　　要：利用数理统计的方法对实验室维氏硬度计稳定性进行测试和评价,根据每次试验结果的测量不确定度建立"测量不确定度随时间变化图",对其使用情况作出有效评价。结果表明:硬度计运行稳定,满足检验要求。但压痕自动测量功能测量的硬度值常比实际数值稍大,建议对硬度计进行检查,调整因设备硬件造成的误差,保证结果更准确。The stability of Vickers hardness tester in laboratory was tested and evaluated by means of mathematical statistics. According to the measurement uncertainty of each test,the curve of measurement uncertainty vs time was established.Meanwhile,the use of the uncertainty was effectively evaluated. The results showed that the running of hardness tester was stable,which could meet the testing requirements. However,for the tester with indentation automatic measurement function,the measured value of hardness was often slightly larger than the actual value. It was suggested to check the hardness tester and adjust the errors caused by the hardware to ensure more accurate results.

关 键 词：维氏硬度计 稳定性 不确定度 自动测量 

分 类 号：TH871.5[机械工程—仪器科学与技术]