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Języki publikacji
Abstrakty
The results of research on lithium grease with some additives influence on wear prevention in a fretting process are presented in this work. The mild steel couples were tested under dry conditions and lubricated with lithium grease contained additives. As additives there were used: graphite, molybdenum disulphide, Acorox 880 (zinc dioctyldithio phosphate), Molyvan A and Molyvan L in chosen concentrations. Experiments were performed on a laboratory stand FRET-2. In the stand a moving cylindrical specimen of diameter 10 mm and height 2 mm fretted its cylindrical surface against flat surface of stationary specimen. The research tests were performed under normal load 50 N, amplitude of motion 60 |nm and frequency of vibration 200 Hz. A grease seizure load (in four ball test) and consistence were the main features affecting the fretting wear. Graphite and molybdenum disulphide were significantly effective in concentration at least 10%. EP additive (Acorox 880) in concentration more than 1% increased fretting wear. Molyvan A and Molyvan L were not more effective than molybdenum disulphide powder. Lubricating grease at the fretted couple changed significantly the wear mechanism observed on SEM photographs of fretting scars.
Słowa kluczowe
Wydawca
Czasopismo
Rocznik
Tom
Strony
214--220
Opis fizyczny
Bibliogr. 5 poz., rys.
Twórcy
autor
- Technical University of Gdańsk Mechanical Engineering Faculty Narutowicza 11/12 80-952 Gdańsk
Bibliografia
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ5-0024-0030