The Rockwell hardness primary national machine according to the new international definition

Li He; Feng Zhang

doi:10.1117/12.904619

15 November 2011 The Rockwell hardness primary national machine according to the new international definition

Li He, Feng Zhang

Proceedings Volume 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation; 83211I (2011) https://doi.org/10.1117/12.904619
Event: Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 2011, Yunnan, China

Abstract

According to the new definition of Rockwell hardness given by the International Working Group on Hardness (WGH), the new Rockwell hardness national primary standard machine in the National Institute of Metrology is presented in this paper. A tooth-belt is used to reduce the vibration. The loading monitor system, the PLC control system and the laser measuring system are designed to raise the measuring precision. Experiments show that the Rockwell hardness standard machine based on this method can meet the requirements of the new definition and accomplish a high stability and measuring precision.

Citation Download Citation

Li He and Feng Zhang "The Rockwell hardness primary national machine according to the new international definition", Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 83211I (15 November 2011); https://doi.org/10.1117/12.904619

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