Identyfikatory
Warianty tytułu
The influence of loads and rotational speeds on bainitic rail steel in wear in sliding pairs on an Amsler stand
Języki publikacji
Abstrakty
Podjęcie problemu zastosowania stali bainitycznej do produkcji szyn kolejowych oraz w jakich warunkach mają być one eksploatowane nie jest łatwym zadaniem. W związku z tym w ramach pracy przeprowadzono badania tribologiczne (na stanowisku Amslera) oraz metalograficzne i profilografometryczne śladów współpracy. Określono wpływ wybranych parametrów eksploatacji, tj. obciążenia (Q) i prędkości obrotowej na zużycie i współczynnik tarcia stali o strukturze bainitycznej w skojarzeniu ślizgowym.
The developing world industry causes an increase in transport and train speeds. In this way, the rolling-sliding contact surface of rails subject to load lead to effort placed on material. The result of effort is increase stresses in subsurface contact. The forming and growing damages on the surface and subsurface in rolling-sliding contact depend on load and stresses and on the characteristic of rail material in the region of most effort of the rail area. Except external factors, the stress levels have an influence on internal stresses of sliding surface topography, since geometrical and structure notch causes stress concentration. The main aims of this work were determining how loads and speeds influence the values of wear and friction coefficients of rail steel of bainitic structure in sliding couples plus graphic interpretation research results from our experience and metalographic research. The scope of our work included performing tests on samples of rail steel of bainitic structure and tribiological research on an Amsler stand. These investigations have been carried out for one-to-one mapping to the wheel-rail system at the beginning of movement. During interaction in wheel-rail system, different effects proceed. Wear rate is different for individual working states depending on loads and speeds.
Czasopismo
Rocznik
Tom
Strony
11--18
Opis fizyczny
Bibliogr. 4 poz., rys., tab.
Twórcy
autor
autor
- Politechnika Śląska, Katedra Eksploatacji Pojazdów Samochodowych, ul. Z. Krasińskiego 8, 40-019 Katowice, henryk.bakowski@polsl.pl.
Bibliografia
- 1. Viafara C.C., Castro M.I., Velez M.J., Toro A. Unlubricated sliding wear of pearlitic and bainitic steels. Wear 259, 2005, p. 405-411.
- 2. Witaszek M.: The influence of load and sliding speed on dry sliding wear of a bainitic steel. Proceedings of 16th International Colloquium Tribology 2008. Esslingen 15 - 17.01.2008, 99.
- 3. Clayton P., Jin N.: Unlubricated sliding and rolling/sliding wear behavior of continuously colled, low/medium carbon bainitic steels. Wear 200, 1996, p. 74-82.
- 4. Witaszek M., Bąkowski H.: The influence of dry, rolling - sliding friction conditions on the wear of a rail steel mated with hardened tyre steel. Tribologia, 3/2007 (213), 389-400.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPS1-0036-0001