Effect of Asperity Interacting Frequency on Rolling contact Fatigue : 2nd Report, The Cases of a Thermal Refined S45C Carbon Steel, a Hardened SCM435 Alloy Steel and a Case-Hardened SCM415 Alloy Steel

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概要

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• In order to evaluate the severity of asperity interactions in rolling contact, the authors introduced a new parameter asperity interacting frequency Naf. Naf is defined by the number of contact points of higher hardness roller with different microgeometries which come into contact with any one point of mating roller of lower hardness. And the effects on rolling contact fatigue were examined using thermal refined or hardened rollers with different hardnesses. As the result, in a similar manner to the previous results obtained using normalized steel rollers, it is found that there exists a regular relation between the parameter Naf and the pitting life in pure rolling conditions. Furthermore, it is recognized that the occurrence of micro-pitting, which is apt to develop on the surface of a case-hardened steel roller, is decisively affected by the parameter Naf.

• 一般社団法人日本機械学会の論文

著者

• Nakajima Akira

  Faculty Of Medicine University Of Miyazaki

• Nakajima Akira

  Faculty Of Science And Engineering Saga University

• MORODOMI Harumi

  Karatsu Technical High School

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• Effect of Asperity Interacting Frequency on Rolling contact Fatigue : 2nd Report, The Cases of a Thermal Refined S45C Carbon Steel, a Hardened SCM435 Alloy Steel and a Case-Hardened SCM415 Alloy Steel

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