紫铜管洛氏硬度测量不确定度的评定  

Evaluation of uncertainty in rockwell hardness measurement of purple copper tube

作　　者：钟金德 ZHONG Jinde(Fujian Metrology Institute,Fuzhou 350003,China;Key Laboratory of State Administration of Market Supervision(Force Measurement Test),Fuzhou 350003,China;Fujian Provincial Key Laboratory of Force Measurement,Fuzhou 350003,China)

机构地区：[1]福建省计量科学研究院,福州350003 [2]国家市场监督管理总局重点实验室(力值计量测试),福州350003 [3]福建省力值计量测试重点实验室,福州350003

出　　处：《理化检验(物理分册)》2025年第4期30-32,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：对紫铜管试样进行洛氏硬度试验,对测量结果不确定度进行评定,分析了影响测量结果准确性的因素。结果表明:紫铜管洛氏硬度试验的测量不确定度主要来源于洛氏硬度试验重复性、使用标准物质测量洛氏硬度计、标准硬度块、硬度计示值误差、压痕测量系统分辨力及数据修约等,其中硬度计的最大允许误差、测量重复性、标准块均匀度对测量不确定度的影响较大。因此,选择高精度且性能稳定的硬度计,均匀性好的标准硬度块,并提高检测人员的专业素养与操作技能,可使试验结果更加准确、可靠。The Rockwell hardness test was perform on copper tube samples,the uncertainty of measurement results was evaluated,and the factors that affect the accuracy of test results were analyzed.The results show that the measurement uncertainty of the Rockwell hardness test for copper pipes mainly came from the repeatability of the Rockwell hardness test,the use of standard materials to measure the Rockwell hardness tester,standard hardness blocks,the indication error of the hardness tester,the resolution of the indentation measurement system,and data rounding.Among them,the maximum allowable error of the hardness tester,measurement repeatability,and the uniformity of the standard block had a significant impact on the measurement uncertainty.Therefore,choosing a high-precision and stable hardness tester,a standard hardness block with good uniformity,and improving the professional competence and operational skills of the testing personnel could make the test results more accurate and reliable.

关 键 词：紫铜管 洛氏硬度试验 不确定度评定 结果准确性 影响因素 

分 类 号：TB31[一般工业技术—材料科学与工程] TG115.5[金属学及工艺—物理冶金]