THE INFLUENCE OF A UNIT LOAD ON THE STATIC FRICTION COEFFICIENT VALUE OF SELECTED METAL– –POLYMER FRICTION PAIRS
Journal Title: Tribologia - Year 2014, Vol 256, Issue 4
Abstract
The main goal of the experiments was to determine the value of a static friction coefficient for particular friction pairs. Each friction couple consists of a plastic sample and a steel countersample. Pairs of materials that were chosen for the tests are ones most frequently used for friction nodes in machine design and many another branches of industry. Understanding and ability to influence the value of COF allow the reduction of energy losses and the design of more robust products. This article contains the results of studies and the description of a static friction coefficient μ0 testing procedure. The selected plastics were PEEK, PEEK BG, PA 6, PE-UHMW, POM, POM + 40GF, POM + 10% PTFE, PTFE, PTFE +40% Bronze, PET and PSU (as a group of materials commonly used for bearings, guides and gaskets etc.); and during the investigations, they rubbed together with steels C45, Hardox 500, and AISI 316L. Each test consists in an induction of reciprocating movement between the friction pair pin-plate-type. The experiment assumed that the value of a steel element surface roughness and the rest time between the cycles are constant. Characteristics describing the dependence between the static friction coefficient and the unit pressure (of range 0.1 – 3.0 MPa) were prepared for all selected rubbing pairs. The results clearly indicate a meaningful influence of unit pressure on the value of static COF.
Authors and Affiliations
Anna DOBROWOLSKA, Piotr KOWALEWSKI, Anita PTAK
Keywords
Related Articles
- EP ID EP262200
- DOI -
- Views 66
- Downloads 0
WEAR TESTING OF a-Al2O3 OXIDE CERAMIC IN A DIVERSE ABRASIVE SOIL MASS
This paper presents a comparative study of the intensity of α-Al2O3 oxide ceramic sand 38GSA martensitic steel wear in three types of abrasive soil masses, i.e. loose sand, sandy clay and heavy clay. The tests were carri...
ANALYSIS OF DEFECTS AND FAILURES OF HYDRAULIC GEAR PUMPS WITH THE USE OF SELECTED QUALITATIVE METHODS
The paper presents an analysis of the defects and failures of a gear pump using the FMEA matrix analysis and error diagram. For each pump component, functions that are performed and potential defects were identified. Fai...
Projekt mikro- i nanotribologicznych badań chrząstki stawowej
TRIBOLOGICAL PROPERTIES OF A FRICTION PAIR WITH KINDS OF BRONZES
This paper presents the results of tribological properties with of a friction pair steel X210Cr12 (60 HRC) and bronze CuSn12Ni2 (in the form of casting and sintered) and engine trade lubricated oil Selektol Special SD 20...
Analiza przydatności wybranych metod badawczych do oceny spójności wewnętrznej opracowanego smaru oraz jego oddziaływań adhezyjnych z podłożem stalowym
Celem pracy był dobór metod badawczych i ocena informatywności otrzymanych wyników badania oddziaływań występujących pomiędzy opracowanym smarem plastycznym a roboczymi powierzchniami węzła tarcia wykonanymi ze stali. Pr...