Pitting Formation in Concave-Convex Gears Manufactured from AISI 8620 Steel

Uzun M. , Munis M. M. , Duzcukoglu H.

JOURNAL OF TESTING AND EVALUATION, cilt.46, ss.1708-1714, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 46 Konu: 4
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1520/jte20160477
  • Sayfa Sayıları: ss.1708-1714


In this study, the pitting formation of the tooth flank of concave-convex involute gears was investigated. The gears were manufactured from AISI 8620 steel with computer numerical control (CNC) machining and subjected to a cementation hardening process because they could not be produced using traditional methods. The results of the experimental studies with these gears were compared to those obtained with spur gears. As a result of this comparison, and because the pitch line of spur gears is less than the pitch line of concave-convex gears with exactly the same dimensions, the maximum Hertz stress formed in the pitch point of concave-convex gears is found to be less than that formed in the pitch point of spur gears. Therefore, the formation of pitting in concave-convex gears is quite delayed.