{"?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-S6AXVOMD/e9add045-ac0f-45db-ac13-35fba0aedf14/PDF","dcterms:extent":"1028 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-S6AXVOMD/c7624a22-4e5c-4376-b39b-6c96150fef78/TEXT","dcterms:extent":"23 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-S6AXVOMD","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-ihg6vo21"},{"@xml:lang":"sl","#text":"Materiali in tehnologije"}],"dcterms:issued":"2014","dc:creator":"Altin, Abdullah","dc:format":[{"@xml:lang":"sl","#text":"številka:3"},{"@xml:lang":"sl","#text":"letnik:48"},{"@xml:lang":"sl","#text":"str. 373-378"}],"dc:identifier":["COBISSID:1056682","ISSN:1580-2949","URN:URN:NBN:SI:doc-S6AXVOMD"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"sl","#text":"hitrost"},{"@xml:lang":"sl","#text":"hrapavost"},{"@xml:lang":"sl","#text":"karbidi"},{"@xml:lang":"sl","#text":"obdelovalnost"},{"@xml:lang":"sl","#text":"rezanje"},{"@xml:lang":"sl","#text":"sile"},{"@xml:lang":"sl","#text":"trdne prevleke"},{"@rdf:resource":"http://www.wikidata.org/entity/Q593053"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"The effect of the cutting speed on the cutting forces and surface finish when milling chromium 210 Cr12 steel hardfacings with uncoated cutting tools| Vpliv hitrosti rezanja na sile rezanja in kvaliteto površine pri rezkanju kromovih navarov 210 Cr12 z rezilnim orodjem brez prevleke|"},"dc:description":[{"@xml:lang":"sl","#text":"The experimental study presented in this paper aims to select the most suitable cutting and offset parameter combination for a milling process in order to obtain the desired surface roughness value for a machined workpiece of chromium 210 Cr12 steel, in terms of cutting speed, feed rate and depth of cut for the milling process. A series of experiments was performed on chromium material with a cutting width of 50 mm using a round, uncoated, cemented-carbide insert on a engine power 5.5 kW Jhonford VMC550 CNC vertical machining center without any cutting fluid. The experiments were carried out using four different cutting speeds ((70, 90, 110, 130) m/min) at a constant depth of cut (1 mm) and feed rate (0.3 mm/r) and the effects of the cutting speeds on the primary cutting force and the surface roughness were investigated. The cutting force (Fc) and the surface roughness (Ra) decreased with the workpiece material%s easy machinability. From the experiments, the highest average primary cutting force was obtained as 658.17 N at a cutting speed of 70 m/min. The lowest average surface roughness was 0.36 %m, which was obtained at a cutting speed of 70 m/min. The experimental results indicated that the obtained chip form is narrow and short stepped"},{"@xml:lang":"sl","#text":"Namen predstavljene študije je izbira najprimernejših parametrov rezanja, hitrosti rezanja, hitrosti podajanja in globine reza pri rezkanju in kombinacije parametrov pri postopku rezkanja za doseganje želene hrapavosti površine obdelovancev iz kromovega jekla 210 Cr12. Izvršena je bila serija preizkusov rezanja širine 50 mm na kromovem materialu z vložki iz karbidne trdine brez prevleke na CNC vertikalnem obdelovalnem centru Jhonford VMC550 moči 5,5 kW in brez hladilne tekočine za rezanje. Preizkusi so bili izvršeni pri štirih hitrostih rezanja ((70, 90, 110, 130) m/min) pri konstantni globini rezanja (1 mm) in hitrosti podajanja (0,3 mm/r). Preiskovan je bil vpliv hitrosti rezanja na primarno silo rezanja in hrapavost površine. Sila rezanja (Fc) in hrapavost površine (Ra) sta se zmanjševali z lažjo obdelovalnostjo obdelovanca. Preizkusi so pokazali, da je povprečje največje sile rezanja 658,17 N pri hitrosti rezanja 70 m/min. Povprečje najmanjše hrapavosti površine 0,36 %m je bilo doseženo pri hitrosti rezanja 70 m/min. Rezultati preizkusov so pokazali, da so dobljeni ostružki ravni in kratko stopničasti"}],"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-S6AXVOMD","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-S6AXVOMD"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-S6AXVOMD/e9add045-ac0f-45db-ac13-35fba0aedf14/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-S6AXVOMD/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-S6AXVOMD"}}}}