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Studies Regarding the Influence of Carbon Content on the Tribological Behaviour of Gas-Carbu-Sintering Steels
(UDJG, 2011)
The paper presents the experimental research on the tribological behavior of sintered steels obtained by carburizing the iron powder with different concentrations of graphite (Gr). For the experimental research were prepared ...
Ecological Lubricants Based on Vegetal Oils
(UDJG, 2011)
Recently, there is an ecologically justified tendency to use lubricants based on vegetal oils and synthetic fluids, both ones reducing the application field of mineral oils. Biodegradable lubricants will be more used in ...
Elastic Frictional Contact under Normal and Tangential Loading
(UDJG, 2011)
A robust algorithm for elastic contact simulation considering tangential tractions is advanced in this paper. Two similar numerical models are advanced for the normal, as well as for the tangential direction, and the ...
The Dynamic Behavoir of the Sliding Tribosystem in Cyclical Translation Motion in Unsteady Duty
(UDJG, 2011)
The present paper deals with certain methodological aspects of researching the behaviour of the sliding tribosystem in cyclical translation motion from the point of view of the dynamics of contact processes. The dynamic ...
Surface Roughness Parameters Evaluation in Rolling/Sliding Wear TestsS
(UDJG, 2011)
Rolling/sliding wear tests were performed on an Amsler test rig. Normal load (expressed as the Hertzian pressure) and the roll-slide ratio have been considered to have the most important influence in simulating gear ...
A Method to Evaluate the Durability of Sucker Rod Pumps and to Reduce Corrosive Wear
(UDJG, 2011)
The paper presents experimental tests made in static and dynamic conditions in order to establish the wear laws for different materials’ couples at different medium temperatures and pressures. Some complex wear laws were ...
The Influence of the Thermomagnetic Treatments on the Nitrided Superficial Layers Evolution after Wear Process (III)
(UDJG, 2011)
Two types of steel grades were subjected to a nitriding thermo-chemical treatment after the thermo-magnetic treatments. The structural aspects of the superficial layers of these steels are studied after the friction process ...
Some Experimental Results Concerning the Influence of Surface Coatings on the Wear of Poly-Ether-Etherketone (Peek) Polymeric Gears
(UDJG, 2011)
Gears made of general purpose Poly-Ether-Ether-Ketone (PEEK) polymeric material and coated on their flanks with a thin layer of different solid lubricants MoS2, graphite (C), BN and PTFE are tested in relation to wear and ...
Durability of the Layers Deposed with Metal – Ceramic Powders Type CR3 C2 –NICR and High Speed Flame (HVOF)
(UDJG, 2011)
The durability of the reconditioned or preventively covered with powders type Cr3 C2 –NiCr product may outrun the performances of the original product and (the original specification, too). Due to the deposit of these ...
The Screw Fastening Order in Slewing Rings
(UDJG, 2011)
The slewing rings are composed of two rings, an inner one and an outer one, in which raceways are obtained that, contains the rolling elements on which the working loads are transmitted from the moving ring to the fixed ...