{"?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-OBBP94DG/46ce2374-2960-4ed7-84e1-a1ceb77b293e/HTML","dcterms:extent":"22 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-OBBP94DG/d86b4933-1478-43e6-b982-e80f6e96eb6b/PDF","dcterms:extent":"322 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-OBBP94DG/4dc5f30d-278b-4d3a-870a-87dda03a0073/TEXT","dcterms:extent":"20 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-OBBP94DG","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":["Kavička, František","Klimes, Lubomir","Mauder, Tomáš","Stetina, Jozef"],"dc:format":[{"@xml:lang":"sl","#text":"številka:3"},{"@xml:lang":"sl","#text":"letnik:47"},{"@xml:lang":"sl","#text":"str. 311-316"}],"dc:identifier":["ISSN:1580-2949","COBISSID:998570","URN:URN:NBN:SI:doc-OBBP94DG"],"dc:language":"en","dc:publisher":{"@xml:lang":"sl","#text":"Inštitut za kovinske materiale in tehnologije"},"dc:subject":[{"@xml:lang":"sl","#text":"kontinuirno ulivanje"},{"@xml:lang":"sl","#text":"optimiranje"},{"@xml:lang":"sl","#text":"šobe"},{"@xml:lang":"sl","#text":"temperatura površine"},{"@xml:lang":"sl","#text":"temperaturno polje"}],"dcterms:temporal":{"@rdf:resource":"2000-2024"},"dc:title":{"@xml:lang":"sl","#text":"Minimization of surface defects by increasing the surface temperature during the straightening of a continuously cast slab| Zmanjševanje površinskih napak z zvišanjem temperature površine kontinuirno ulitega slaba med ravnanjem|"},"dc:description":[{"@xml:lang":"sl","#text":"Surface temperatures of cast slabs on small-radius segments as well as on the unbent areas belong to the parameters that affect the surface quality of continuously cast slabs. Older machines for continuous casting were designed with regard to the quantity (the amount of cast slabs) rather than the quality of the production. Therefore, an adaptation of the secondary cooling is required in order to obtain the desired surface temperatures. The modification consists of a dynamic control of the secondary cooling, surface-temperature monitoring by means of a numerical model of the temperature field as well as a prospective replacement of the cooling nozzles. In order to optimize and control the secondary cooling, characteristics of the nozzles, especially the influences of the water-flow rate, air pressure, casting speed, surface temperatures and heat-transfer coefficient under the nozzles have to be known. Moreover, the heat-transfer coefficient can also be influenced by the age of the nozzles. The paper deals with the relationships between these influences and their impacts on the temperature field of a cast slab. The results are presented for the 1530 mm x 250 mm slabs that are cast in Evraz Vítkovice Steel where the main author's dynamic, 3D solidification model is used, in its off-line version, to control the production interface. The results can be used for the preparation of a real casting process"},{"@xml:lang":"sl","#text":"Temperatura površine ulitega slaba pri segmentih z majhnim radiusom, kot tudi na neukrivljeni površini, spada k parametrom, ki vplivajo na kvaliteto površine kontinuirno ulitega slaba. Starejše naprave za kontinuirno ulivanje slabov so bile pripravljene bolj za večjo zmogljivost kot pa za kvaliteto. Zato je potrebna prilagoditev sekundarnega ohlajanja, da se zagotovi doseganje želene temperature površine. Prilagoditev sestoji iz dinamične kontrole sekundarnega hlajenja, kontrole temperature površine z numeričnim modelom temperaturnega polja, kot tudi morebitna zamenjava hladilnih šob. Optimiranje in kontrola sekundarnega hlajenja je mogoča s poznanjem značilnosti šob in še posebno vpliva hitrosti pretoka vode, tlaka zraka, hitrosti ulivanja, temperature površine in koeficienta prenosa toplote pod šobami. Poleg tega na koeficient prenosa toplote lahko vpliva tudi starost šob. Ta članek obravnava odnos med naštetimi vplivi in njihov učinek na temperaturno polje ulitega slaba. Predstavljeni so rezultati za ulit slab 1530 mm x 250 mm. Avtorjev dinamični 3D-model strjevanja se uporablja za kontrolo vmesnika pri proizvodnji in teče v off-line-verziji. Rezultati se lahko uporabijo kot pripravljalno orodje za realni postopek ulivanja"}],"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-OBBP94DG","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-OBBP94DG"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-OBBP94DG/d86b4933-1478-43e6-b982-e80f6e96eb6b/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-OBBP94DG/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-OBBP94DG"}}}}