STATIC AND DYNAMIC FRICTION CHARACTERISTICS OF POLYMER COMPOSITES INTENDED FOR REGENERATION OF TOOL GUIDES
Journal Title: Tribologia - Year 2014, Vol 253, Issue 1
Abstract
The paper presents the results of static and dynamic friction force measurements for chemo-setting metal-polymer composites, made from epoxy resin. The composites are intended for the regeneration of the sliding guides in cutting machines. The composites with various qualitative and quantitative contents were tested. The main powder filler was iron powder of specific chemical content and granulometric distribution obtained by the reduction method. The composites were modified by the addition of anisotropic solid greases (graphite and molybdenum disulphide) one or both. The composites were cross-linked by means of aliphatic polyamine (triethylenetetramine). The static friction coefficient in dry conditions was measured by means of a special test rig with a tribosystem adapted for dry friction investigation under reciprocation motion, which is the typical motion of the guiding systems of cutting tools. The measurements were performed under various unit pressures (0.1, 0.5, 1.0, 1.5, and 2.0 MPa). The effect of the type of friction modifiers and friction couple load on the static and dynamic friction force of metal-polymer composite-steel tribosystems was tested. As a reference, the static and dynamic characteristics of the steel-steel tribosystem were investigated. Based on the obtained test results, it was concluded that static and dynamic friction coefficient depends on the type of modifiers used. The most beneficial results and stick-slip phenomena reduction were obtained for the composites containing mixed anisotropic solid lubricants.
Authors and Affiliations
Zbigniew PAWELEC, Piotr KOWALEWSKI
Keywords
Related Articles
- EP ID EP263774
- DOI -
- Views 36
- Downloads 0
EXAMPLES OF TECHNOLOGICAL APPLICATION OF THE LASER ABLATION MICRO-TREATMENT IN TRIBOLOGY
In this paper examples of technological applications of laser ablation micro-treatment in combustion engine elements surface layer modification (valves, cylinder brush) are given. Nitrided valves handle modification allo...
APPLYING SURFACE PLASMA HARDENING FOR IMPROVING THE TRIBOLOGICAL CHARACTERISTICS OF STEEL PARTS
This work presents the results of experimental studies on the application of surface plasma hardening to improve the tribological characteristics of steel marks of 40CrNi, 20Cr2Ni4A, and 34CrNi1Mn. According to the obtai...
Tribologia smarowania granicznego
Autorzy wyjaśnili, kiedy zachodzi tarcie suche i jaki wpływ ma wartość obciążenia na współczynnik tarcia oraz przedstawili, w jakich technicznych warunkach zachodzi tacie płynne. Tarcie płynne, jak wiemy, jest wtedy, kie...
EVALUATION OF TRIBOLOGICAL COATINGS OBTAINED BY METAL SPRAYING
This paper presents the results of tribological properties such as wear and the coefficient of friction forces obtained by coating by metal spraying. The research was based on coatings of nickel, chromium, chromium-nicke...
ANTIWEAR PROPERTIES OF MEDIUM-CARBON STEEL WITH Cr/CrN TYPE HYBRID COATING PRODUCED BY THE PVD METHOD
The paper presents the results of examinations of the structure, and mechanical and antiwear properties of hybrid coatings of the Cr/CrN type, consisting of chromium and chromium nitride, formed on the surface of the C45...