Tomanik E.,MAHLE Metal Leve s.a. |
Xavier F.-A.,NAGEL Maschinen u. Werkzeugfabrik GmbH |
Zhmud B.,Applied Nano Surfaces Sweden AB
Tribologie und Schmierungstechnik | Year: 2014
The present study focuses on effects of triboconditioning on the tribological properties of cylinder liners. Cylinder liners for a production 13L heavy-duty diesel engine were tribocon-ditioned using a Nagel honing machine with a modified honing head equipped with a set of non-abrasive tools in place of the traditional hones. Also, a special organotungstate-doped process fluid was used instead of the honing oil. In order to evaluate the effect of triboconditioning on the piston assembly/cylinder liner tribology, reciprocating friction rig tests and floating liner engine (FLE) rig tests were used. The tests demonstrated significant improvement in the tribological properties of triboconditi-oned cylinder liners. The improvement was attributed to the formation of WS2/C tribofilms at the component surface and a modified surface roughness profile with reduced core roughness (Rk) and peak height (Rpk).
Zhmud B.,Applied Nano Surfaces Sweden AB |
Tomanik E.,MAHLE Metal Leve S.a. |
Xavier F.-A.,NAGEL Maschinen U. Werkzeugfabrik GmbH
Lubrication Science | Year: 2014
Triboconditioning is a mechanochemical surface finishing process developed for improving the tribological properties of mechanical components made of steel or cast iron. The process combines elements of extreme pressure mechanical burnishing of the component surface with a tribochemical deposition of a low-friction anti-wear film of tungsten disulphide (WS2). This allows one to produce, in a single finishing operation, a smoother surface with a significantly reduced coefficient of boundary friction and improved wear-resistance and load-carrying capacity. This study presents results of tribological rig tests carried out with valve train components and cylinder bores that underwent the triboconditioning treatment. The results show significant improvement in the tribological properties of triboconditioned components. The improvement is attributed to the formation of WS2 tribofilms at the component surface and a modified surface roughness profile with reduced core roughness (Rk) and peak height (Rpk). Elemental composition of the tribofilms generated by the triboconditioning process has been studied by X-ray photoelectron spectroscopy and energy dispersive X-ray spectroscopy the surface profile of the treated components has been studied using vertical scanning interferometry and the internal structure of the tribofilms has been studied with focused ion beam-transmission electron microscope technique. © 2013 John Wiley & Sons, Ltd.
Mahle Metal Leve S A, Mahle GmbH and Applied Nano Surfaces Sweden Ab | Date: 2014-11-13
The present invention relates to a method for the lining of a thin-walled sliding element (20) for internal combustion engine blocks ion which: (i) the pressure applied for honing the sliding element (20) is between 8 MPa and 9 MPa; and (ii) at least a part of the inner surface (21) of the sliding element (20) comprises a nano-coat of solid lubricant provided with roughnesses, before honing, of Rpk, Rk and Rvk no lower than of the original.
Zhmud B.,Applied Nano Surfaces Sweden AB
Tribology and Lubrication Technology | Year: 2011
Manufacturers are stepping up their R& efforts to build better engines and lighter materials. There is renewed emphasis on understanding the tribological aspects of energy losses in powertrain and using current advancements in lubrication engineering and coatings to minimize such losses. A discussion on efficient lubricants and coatings for automotive applications covers the auto industry's switch to direct fuelling via the introduction of new petrol engines; automotive engine designs; concerns on the use of additives in oil, which may cause exhaust catalyst poisoning; the tribocoatings generated by the ANS triboconditioning process; trend toward low-viscosity oils from SAE 40 and 50 in the 1960s-1980s to the current SAE 20 and 30 viscosity grades; characteristics of modern base oils of API Group II-IV; concerns on the use of friction modifiers; EP antiwear additives, which reduce friction and wear by chemically reacting to the metal surface under boundary contact conditions; and powertrain optimization and curb-weight reduction.
Agency: Cordis | Branch: H2020 | Program: SME-1 | Phase: SMEInst-10-2016-2017 | Award Amount: 71.43K | Year: 2016
Friction and wear are encountered in all areas with relative motion between contacting surfaces. The resulting energy losses are huge: In economic terms friction and wear of materials are estimated to amount 58 % of an industrialized countrys GDP . Conventional solutions to reduce friction and wear include polishing, Diamond Like Carbons coatings (DLC), phosphating, bronze (bushings and pins) and plasma spraying. Applied Nano Surfaces (ANS) unique patented offering Triboconditioning has been proved in over 70 customer projects to be a very high performant (achieving a reduction of friction up to 70% and wear up to 90%) and cost efficient solution in many industrial applications such as engines, compressors, stirling engines, pumps, hydraulic systems and various bushings and bearings. The cost of our technology is substantially lower than what our competitors can offer (up to 8100%) and it requires significantly lower investments in production. We are working with most of the major brands and companies (major auto brands/OEM and manufacturers like e.g. Mahle, GnuttiCarlo, Caterpillar, Daimler) that are continuously making efforts to increase fuel efficiency and increase performance of their products. The already signed license agreements are proof that we have an attractive solution to offer our customers. ANS has a core competence and expertise in the field of tribology, low friction coatings and international business development. The business model is based on a four-step customer approach that lets customers test the product in their own premises and then adjust it to the specific customer needs finalizing in license deals. The market potential for ANS technology is substantial and increasing. All mechanical systems in the world waste useful kinetic energy due to friction. With TriboGlide we aim to obtain an annual revenue of over 12 million and quadruple our team by 2022.
Applied Nano Surfaces Sweden Ab | Date: 2010-07-16
A manufacturing method for providing a low-friction surface comprises providing (210) of a mechanical element. A tool is mechanically rubbed (212) against a surface of the mechanical element. A process liquid is provided (214) to a contact area between the mechanical element and the tool. The process liquid comprises a first element that is a refractory metal and a second element that is a chalcogen. The first and second elements are provided in a liquid substance. The mechanical rubbing is performed with a contact pressure that is between 1% and 100% of an ultimate strength of the mechanical element. The mechanical rubbing thereby causes a combined burnishing of the surface of the mechanical element and a deposition of a tribofilm on the surface of the mechanical element. The tribofilm comprises the first element and the second element.