{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-S0ZOHLRS/2d86c026-2423-4459-b767-c60d58900f6e/PDF","dcterms:extent":"858 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-S0ZOHLRS/2a3214af-437c-470a-bc43-6dfa602d3a35/TEXT","dcterms:extent":"17 KB"}],"edm:TimeSpan":{"@rdf:about":"2000-2024","edm:begin":{"@xml:lang":"en","#text":"2000"},"edm:end":{"@xml:lang":"en","#text":"2024"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-S0ZOHLRS","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2013","dc:creator":["Ćurčija, Dušan","Mamuzić, Ilija"],"dc:format":[{"@xml:lang":"sl","#text":"letnik:47"},{"@xml:lang":"sl","#text":"številka:5"},{"@xml:lang":"sl","#text":"str. 551-555"}],"dc:identifier":["COBISSID:1011114","ISSN:1580-2949","URN:URN:NBN:SI:doc-S0ZOHLRS"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"sl","#text":"brezšivne cevi"},{"@xml:lang":"sl","#text":"mazanje"},{"@xml:lang":"sl","#text":"Reynoldsova enačba"},{"@xml:lang":"sl","#text":"toplotna obdelava"},{"@xml:lang":"sl","#text":"valjanje"},{"@rdf:resource":"http://www.wikidata.org/entity/Q25495250"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Modelling of the lubricant-layer thickness on a madrel during rolling seamless tubings| Modeliranje debeline plasti maziva na trnu pri valjanju brezšivnih cevi|"},"dc:description":[{"@xml:lang":"sl","#text":"AutoCAD-a 3D modelling and the programs of Mathematica, MATLAB and MathCAD Professional were used to calculate the approximate solutions of the Reynolds differential equations for lubrication. Excel Software and Monte-Carlo solutions are compared. The results indicate a fast decrease in the lubricant-layer thickness in the stands for the continuous rolling of tubes. At the start of the rolling, the conditions for stable hydrodynamic lubrication are fulfilled for the tube-diameter-reduction processes. Theoretical calculations indicate that, on the finishing stands, \"lubricant pickling\" may occur on the mandrel. An approximate calculation is performed for the rolling point M and verified with the numerical Monte-Carlo method"},{"@xml:lang":"sl","#text":"Za izračun približnih rešitev Reynoldosovih diferencialnih enačb za mazanje sobili uporabljeni modeliranje AutoCAD-a 3D in programi Mathematica, MATLAB inMathCAD Professional. Primerjane so rešitve, dobljene s programom Excel in znumerično metodo Monte-Carlo. Rezultati kažejo hitro zmanjšanje debeline plasti maziva na ogrodjih za kontinuirno valjanje cevi. Na začetku valjanja, pri postopku zmanjševanja premera cevi, so izpolnjeni pogoji za stabilno hidrodinamsko mazanje. Teoretični izračuni kažejo, da lahko pri končnih ogrodjih na trnu pride do odsotnosti mazanja. Izvršen je približen izračun pritočki valjanja M, ki je bil preverjen z numerično metodo Monte-Carlo"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:DOC-S0ZOHLRS","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-S0ZOHLRS"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-S0ZOHLRS/2d86c026-2423-4459-b767-c60d58900f6e/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-S0ZOHLRS/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-S0ZOHLRS"}}}}