理化检验-物理分册2017，Vol.53Issue(8)：557-561,5.DOI:10.11973/lhjy-wl201708006
便携磁力式布氏硬度计在薄壁小径管硬度检验中的实用性
Practicability of Portable Magnetic Brinell Hardness Tester in Hardness Test of Thin-Walled Small-Diameter Tubes
赵远 1龙华明 1岳庚新1
作者信息
- 1. 天津诚信达金属检测技术有限公司,天津 300384
- 折叠
摘要
Abstract
With the thin-walled small-diameter tubes in power plants as the research obj ect,firstly the hardness test was carried out with portable magnetic Brinell hardness tester,and then the indentation diameters were measured by simple eyepiece,indentation automatic measurement system and the eyepiece equipped on the digital universal hardness tester respectively.And the hardness test results of these three kinds of measurement methods were compared with the test results of digital universal hardness tester to study the practicability of portable magnetic Brinell hardness tester in hardness test of thin-walled small-diameter tubes.The results show that after hardness test with portable Brinell hardness tester,if the indentation diameters were measured by indentation automatic measuring system,the test results were often higher than those tested with digital universal hardness tester for the effect of unevenness of the test tube polished surface.If the indentation diameters were measured by simple eyepiece or the eyepiece equipped on the digital universal hardness tester, the test error compared to the test results of digital universal hardness tester was rather small.When testing the hardness of high alloy small-diameter tubes,the inspection surface should be polished as flat and smooth as possible in the premise of non-affecting the service performance of the tubes,so as to reduce the test error.关键词
薄壁小径管/硬度试验/布氏硬度/便携磁力式布氏硬度计/压痕直径测量Key words
thin-walled small-diameter tube/hardness test/Brinell hardness/portable magnetic Brinell hardness tester/indentation diameter measurement分类
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赵远,龙华明,岳庚新..便携磁力式布氏硬度计在薄壁小径管硬度检验中的实用性[J].理化检验-物理分册,2017,53(8):557-561,5.
