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Research of tribological properties of 34CrNiMo6 steel in the production of a newly designed self-equalizing thrust bearing

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dc.title Research of tribological properties of 34CrNiMo6 steel in the production of a newly designed self-equalizing thrust bearing en
dc.contributor.author Urban, Marek
dc.contributor.author Monková, Katarína
dc.relation.ispartof Metals
dc.identifier.issn 2075-4701 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2020
utb.relation.volume 10
utb.relation.issue 1
dc.type article
dc.language.iso en
dc.publisher MDPI AG
dc.identifier.doi 10.3390/met10010084
dc.relation.uri https://www.mdpi.com/2075-4701/10/1/84
dc.subject tribological properties en
dc.subject wear en
dc.subject surface treatment en
dc.subject self-equalizing bearing en
dc.description.abstract There are many cases when in large power equipment (such as a turbine or compressor) asymmetrically loading on bearings due to thermal deformations, production inaccuracies, or simple deflection of the shaft occurs. This asymmetrically loading means misalignment of rotor against stator in angle more than several tenths of a degree and it has an influence on a journal and thrust bearings. Over the last few years, thanks to increasingly precise manufacturing, solutions that can eliminate this phenomenon have been revealed. In the case of the thrust bearing, it is a system of very precise manufactured levers, which are in close contact each to other, so they have to be not only properly designed from the geometrical point of view but the important role plays a quality of the functional surfaces of these levers. The article deals with the surface treatment effect on tribological properties of 34CrNiMo6 steel used for the production of bearing levers, which are the critical parts of a newly developing self-equalizing thrust bearing. The samples with cylindrical and plate shapes were produced from 34CrNiMo6 steel as representatives of the most suitable geometries for contact surfaces. All samples were heat-treated. The surfaces of some samples were treated by electroless nickel plating or nitriding, some of the samples were treated by tumbling. Gradually, the surface roughness, microhardness, metallographic analysis and the influence of selected types of surface treatments on the wear for individual samples were evaluated within the research presented in the article. As the testing methods for evaluation of tribological properties were selected Pin-on-disc test and frequency tribological test. The results showed that the best tribological properties achieved samples treated by electroless nickel plating compared with the nitrided or only heat-treated samples. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1009532
utb.identifier.obdid 43881578
utb.identifier.scopus 2-s2.0-85077691271
utb.identifier.wok 000516827800084
utb.source j-scopus
dc.date.accessioned 2020-01-24T13:28:14Z
dc.date.available 2020-01-24T13:28:14Z
dc.description.sponsorship Ministry of Education of the Slovak Republic [APVV-19-0550, KEGA 007TUKE-4/2018]
dc.rights Attribution 4.0 International
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.rights.access openAccess
utb.contributor.internalauthor Monková, Katarína
utb.fulltext.affiliation Marek Urban 1, Katarina Monkova 2,3* 1 Faculty of Mechanical Engineering, West Bohemia University in Pilsen, Univerzitni 22, 301 00 Pilsen, Czech Republic; maarc@kto.zcu.cz 2 Faculty of Manufacturing Technologies with the Seat in Presov, Technical University of Kosice, Sturova 31, 080 01 Presov, Slovakia 3 Faculty of Technology, UTB Tomas Bata University in Zlin, Vavreckova 275, 760 01 Zlin, Czech Republic * Correspondence: katarina.monkova@tuke.sk; Tel.: +421-55-602-6370
utb.fulltext.dates Received: 30 November 2019 Accepted: 28 December 2019 Published: 3 January 2020
utb.fulltext.sponsorship This article was funded by the Ministry of Education of the Slovak Republic by grants APVV-19-0550 and KEGA 007TUKE-4/2018.
utb.fulltext.sponsorship The article was prepared thanks to the Project TE02000232 “Special rotary machine engineering center” with the financial support of TA CZ and thanks to supporting by the Ministry of Education of the Slovak Republic by grants APVV-19-0550 and KEGA 007TUKE-4/2018.
utb.wos.affiliation [Urban, Marek] West Bohemia Univ Pilsen, Fac Mech Engn, Univ 22, Plzen 30100, Czech Republic; [Monkova, Katarina] Tech Univ Kosice, Fac Mfg Technol Seat Presov, Sturova 31, Presov 08001, Slovakia; [Monkova, Katarina] UTB Tomas Bata Univ Zlin, Fac Technol, Vavreckova 275, Zlin 76001, Czech Republic
utb.scopus.affiliation Faculty of Mechanical Engineering, West Bohemia University in Pilsen, Univerzitni 22, Pilsen, 301 00, Czech Republic; Faculty of Manufacturing Technologies with the Seat in Presov, Technical University of Kosice, Sturova 31, Presov, 080 01, Slovakia; Faculty of Technology, UTB Tomas Bata University in Zlin, Vavreckova 275, Zlin, 760 01, Czech Republic
utb.fulltext.projects APVV-19-0550
utb.fulltext.projects KEGA 007TUKE-4/2018
utb.fulltext.projects TE02000232
utb.fulltext.projects APVV-19-0550
utb.fulltext.projects KEGA 007TUKE-4/2018
utb.fulltext.faculty Faculty of Technology
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