|
|
|
| Stability test of Vickers hardness tester |
| 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 |
|
|
|
Abstract 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.
|
|
Received: 12 March 2020
|
|
|
|
| [1] |
CHEN Guang-hui, XU Guang, HU Hai-jiang, LIU Man, CHEN Xin. Controlling mechanism of retained austenite in a 1.6 GPa grade medium-carbon high-strength bainitic steel[J]. Iron and Steel, 2021, 56(2): 110-116. |
| [2] |
Zhi-ying Gao, Bo Tian, Yang Liu, Li-yuan Zhang, Mao-lin Liao. Dynamics-based optimization of rolling schedule aiming at dual goals of chatter suppression and speed increase for a 5-stand cold tandem rolling mill[J]. JOURNAL OF IRON AND STEEL RESEARCH,INTERNATIONAL, 2021, 28(2): 168-180. |
| [3] |
SHI Hongyi,CHEN Changhua,HU Jiahao,CHEN Xinhua,LIU Changle. Measurement uncertainty of laboratory testing evaluation method[J]. PHYSICS EXAMINATION AND TESTING, 2021, 39(2): 56-. |
| [4] |
LIU Si-han, WANG Cun-yu, XU Hai-feng, CAO Wen-quan. Superplasticity and microstructure evaluation of cold rolled medium manganese steels[J]. Iron and Steel, 2020, 55(9): 97-103. |
| [5] |
SHAO Cheng-wei, WANG Jun-tao, ZHAO Xiao-li, HUI Wei-jun. Microstructure and mechanical properties of intercritically annealed Al-contain medium Mn steel[J]. Iron and Steel, 2020, 55(5): 87-93. |
| [6] |
CHEN Bin， WANG Liang-jun， HOU Zong-bao，WANG Xiao-min. Measurement uncertainty analysis of coating thickness on color coated plate[J]. PHYSICS EXAMINATION AND TESTING, 2020, 38(2): 58-. |
|
|
|
|
2021, Vol. 39 
