Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지

Lubrication Characteristics of Nano-oil with Different Surface Hardness of Sliding Members

나노 윤활유를 이용한 압축기 습동부 재질의 경도에 따른 윤활특성 평가

  • Han, Young-Cheol (School of Mechanical Engineering, Pusan National University) ;
  • Ku, Bon-Cheol (School of Mechanical Engineering, Pusan National University) ;
  • Lee, Kwang-Ho (School of Mechanical Engineering, Pusan National University) ;
  • Hwang, Yu-Jin (School of Mechanical Engineering, Pusan National University) ;
  • Lee, Jae-Keun (School of Mechanical Engineering, Pusan National University)
  • Published : 2009.06.25
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Abstract

In this study, lubrication characteristics of sliding members were compared with the change of the hardness of friction surfaces and the application of nano-oil. The materials of the specimens were gray cast iron (AISI 35, AISI 60) and nickel chromium molybdenum steel (AISI 4320). The Friction coefficients and the temperature variations of on the frictional surfaces were measured by disk-on-disk tribotester under the condition of fixed rotating speed. The friction surfaces were observed by scanning electron microscope (SEM). In the results, the friction coefficients of the disk surface were increased as hardness difference was increased. The friction coefficient lubricated in nano-oil was less than mineral oil. This is because a spherical nano particle plays a tiny ball bearing between the frictional surfaces, improved the lubrication characteristics.

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