한국윤활학회:학술대회논문집 (Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference)

한국트라이볼로지학회 (Korean Tribology Society)
권호 표지

Residual Stress Measurement in the Hard Turned SKD Tool Steel

  • Kim, Jong-Hyuk (School of Mechanical & Aerospace engineering, Seoul National University) ;
  • Lee, Tae-Hong (School of Mechanical Engr. UNSW) ;
  • Jang, Dong-Young (Department of Industrial & Information Systems Engineering, Seoul National University of Technology) ;
  • Han, Dong-Chul (School of Mechanical & Aerospace engineering, Seoul National University)
  • 발행 : 2002.10.21
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초록

Most manufacturing processes such as welding, cutting and molding generate residual stresses on the surface of manufactured parts. Tensile residual stress is harmful to the surface integrity, which results in reduced fatigue life and causes other structural failures when the service stresses are superimposed on the residual stresses. In the research, the residual stresses of the high hardness steel (over $H_{RC}60$) workpiece (SKD11) machined by the hard turning were measured using Hole-drilling Method. Residual stress in the surface of hard turned workpiece was mainly appeared to be compressive stress.

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