Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
권호 표지

Abrasive Wear Characteristics of Materials for Diesel Engine Cylinder Liner and Piston Ring

디젤엔진 실린더 라이너-피스톤 링 소재의 연삭 마멸 특성

  • Jang, Jeong-Hwan (Department of Mechanical and Precision Engineering, Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University) ;
  • Kim, Jung-Hoon (Research & Development Center, Doosan Engine) ;
  • Kim, Chang-Hee (Research & Development Center, Doosan Engine) ;
  • Moon, Young-Hoon (Department of Mechanical and Precision Engineering, Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University)
  • 장정환 (부산대학교 정밀기계공학과 정밀정형 및 금형가공 연구소) ;
  • 김정훈 (두산엔진(주) 기술연구소) ;
  • 김창희 (두산엔진(주) 기술연구소) ;
  • 문영훈 (부산대학교 정밀기계공학과 정밀정형 및 금형가공 연구소)
  • Received : 2007.02.05
  • Accepted : 2007.02.23
  • Published : 2007.03.30

Abstract

Abrasive wear between piston ring face and cylinder liner is an extremely unpredictable and hard-to-reproduce phenomenon that significantly decreases engine performance. Wear by abrasion are forms of wear caused by contact between a particle and solid material. Abrasive wear is the loss of material by the passage of hard particles over a surface. From the pin-on-disk test, particle dent test and scuffing test, abrasive wear characteristics of diesel engine cylinder liner-piston ring have been investigated. Pin-on-disk test results indicate that abrasive wear resistance is not simply related to the hardness of materials, but is influenced also by the microstructure, temperature, lubricity and micro- fracture properties. In particle dent test, dent resistance stress decreases with increasing temperature. From the scuffing test by using pin-on-disk tester, scuffing mechanisms for the soft coating and hard coating were proposed and experimentally confirmed.

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