便携式硬度计测试技术进展  

Advances in portable hardness tester measurement technology

作　　者：张凤林 ZHANG Fenglin(Shenyang Tianxing Test Instrument Co.,Ltd.,Shenyang 110168,China)

机构地区：[1]沈阳天星试验仪器股份有限公司,沈阳110168

出　　处：《理化检验（物理分册）》2022年第10期5-12,共8页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：结合标准ASTM E110—2014,分析了各类便携式洛氏硬度计和便携式布氏硬度计的技术来源、原理、结构、特点、主要性能、最新技术及其与标准要求的符合程度。结果表明:便携式硬度计采用洛氏硬度及布氏硬度的试验方法、试验力和压头,而试验力准确度及压痕深度测量装置的精度不符合标准要求,故部分便携式布氏硬度计不能保持试验力,也不能通过直接检验,大部分便携式硬度计可通过间接检验,其示值误差和示值重复性可以满足标准要求;电动便携式硬度计采用电机自动加力代替人工加力的方法,可自动完成测试,主要性能指标符合标准要求,可通过直接检验和间接检验,其可提供与台式硬度计同样准确、可靠、合理的硬度检测数据,且性能与台式硬度计没有差别。Combined with standard ASTM E110—2014,the technical source,principle,structure,characteristics,main performance,latest technology and its compliance with standard requirements of various portable Rockwell hardness testers and portable Brinell hardness testers were analyzed.The results show that the portable hardness tester adopts the test method,test force and indenter of Rockwell hardness and Brinell hardness,while the accuracy of the test force and the accuracy of the indentation depth measurement device do not meet the standard requirements.Some portable Brinell hardness testers cannot maintain the test force,so they cannot pass the direct test.Most portable hardness testers can pass the indirect test,and the indication error and indication repeatability can meet the standard requirements.The electric portable hardness tester adopts the method of motor automatic force instead of manual force,which can automatically complete the test.The main performance indicators of the electric portable hardness tester meet the standard requirements,it can pass the direct and indirect inspection and can provide the same accurate,reliable and reasonable hardness test data as the desktop hardness tester,and its performance is not different from the desktop hardness tester.

关 键 词：便携式洛氏硬度计 便携式布氏硬度计 电动便携式硬度计 直接检验 间接检验 

分 类 号：TH871[机械工程—仪器科学与技术] TG115.5[机械工程—精密仪器及机械]