Open AccessSeveral methods for improving the accuracy of Rockwell hardness testing
Author(s) -
Ch Ch Yao,
M L Wang,
Yanwen Ruan,
Xi Lv,
J L Wang,
Jimin Ge,
Haowen Jiao
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1507/10/102010
Subject(s) - rockwell scale , indentation hardness , vickers hardness test , hardness , materials science , metallurgy , microstructure
In order to reduce the testing errors in Rockwell hardness of metal specimens and improve the accuracy of hardness testing, several methods had been tried out and examined based on GB/T 230 and other relevant inspection specifications, firstly, correct the hardness of testing pieces directly by using the hardness reference blocks to calibrate the hardness tester; secondly, correct the hardness of testing pieces by linear calculation of the errors in different hardness values to calibrate the hardness tester; for a great deal of testing pieces, check the hardness twice and the second time in a reverse order. The result shows that the applied methods are effective to further improve the accuracy of Rockwell hardness testing.