A Study on Wear Characteristics of Piston Running Part

피스톤 런닝부의 소재에 따른 마모특성 연구

  • Jang, J.H. ;
  • Yi, H.K. ;
  • Joo, B.D. ;
  • Lee, J.H. ;
  • Moon, Y.H.
  • 장정환 (부산대학교 정밀기계공학과/정밀정형 및 금형가공 연구소) ;
  • 이혜경 (부산대학교 정밀기계공학과/정밀정형 및 금형가공 연구소) ;
  • 주병돈 (부산대학교 정밀기계공학과/정밀정형 및 금형가공 연구소) ;
  • 이재호 (부산대학교 정밀기계공학과/정밀정형 및 금형가공 연구소) ;
  • 문영훈 (부산대학교 정밀기계공학과/정밀정형 및 금형가공 연구소)
  • Published : 2007.05.10

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.