Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Analysis on the Results of the Rockwell Hardness Round Robin Test

로크웰 경도도 순회 비교측정 결과에 대한 분석

  • Bahng, G.W. (Div. of Chemical Metrology and Materials Evaluation, Korea Research Institute of Standards and Science) ;
  • Tak, N.H. (Div. of Chemical Metrology and Materials Evaluation, Korea Research Institute of Standards and Science)
  • 방건웅 (한국표준과학연구원 물질량표준부) ;
  • 탁내형 (한국표준과학연구원 물질량표준부)
  • Received : 2001.04.24
  • Published : 2001.09.30
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Abstract

To improve the reliability of hardness test results, Rockwell hardness round robin test was carried out for 10 laboratories. The test condition was the same with the ISO(International Standards Organization) standards. Korea Research Institute of Standards and Science(KRISS) supplied the hardness standard blocks and an indenter to laboratories for the measurement. The participating laboratories measured hardness of the specified areas on the blocks for 6 times with their own indenter as well as common indenter, respectively, and reported the results to KRISS. The result showed that quite large amount of the differences came from the indenter and it is necessary to change indenter with better quality for improved reliability in hardness measurement.

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