The Survivability Characteristics of Fluid Power Components in Contaminated Environments.
Annual rept. 1 Jul 77-30 Jun 78.
OKLAHOMA STATE UNIV STILLWATER FLUID POWER RESEARCH CENTER
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Contaminant wear in fluid power components is a factor that limits the life and reliability of hydraulic systems. This wear normally takes place in areas of relative motion between two surfaces. In this study, tests were performed employing linear reciprocating and rotary motions to determine the relationship between contamination level and wear rate. The tests reveal the importance of clearance size in relation to contaminant-induced wear. When the clearance between two moving surfaces is large compared to the contaminant size, the majority of wear will be erosive. However, as the contaminant size approaches that of the clearance, the wear mode shifts to include abrasive wear. A component wear test conducted upon a hydraulic gear pump also revealed a relationship between contamination level and wear rate. In addition, it is shown that a correlation of pump wear data with the results of the linear and rotary rubbing wear tests provides an insight to the internal clearances of the pump and the resulting contaminant sensitivity.
- Fluidics and Fluerics
- Pumps, Filters, Pipes, Tubing, Fittings and Valves