Determination of friction characteristics of J-55 OCTG connections lubricated with environmentally safe thread compound


ERTAS A., ÇUVALCI O. , CARPER H. J.

TRIBOLOGY TRANSACTIONS, cilt.42, no.4, ss.881-887, 1999 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 42 Konu: 4
  • Basım Tarihi: 1999
  • Doi Numarası: 10.1080/10402009908982296
  • Dergi Adı: TRIBOLOGY TRANSACTIONS
  • Sayfa Sayıları: ss.881-887

Özet

This paper presents the results of an experimental study conducted to determine friction coefficient of J-55 tubing with eight different compounds. Four of the compounds meet the specifications of API Modified, and four were lead-free. The specimens were machined and phosphatized with manganese phosphate. The surface roughness of the specimens was nominally 1.27,micron. Repeated tests, were run at a rotational speed of 1.5 rpm and 5 rpm. In each test the bearing load was increased monotonically to a maximum of 625 kN. Friction coefficient data obtained during the tests are presented and discussed.