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Article: Casting system effectiveness- measurement and theory

TitleCasting system effectiveness- measurement and theory
Authors
Issue Date1992
PublisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/dental
Citation
Dental Materials, 1992, v. 8 n. 2, p. 89-99 How to Cite?
AbstractEvaluating castability as a property of dental casting alloys is an unworkable concept, since any measure is demonstrably affected by several external factors. Casting System Effectiveness (CSE) is shown experimentally and theoretically to depend primarily upon the time taken for the advancing front to freeze. A spiral tube mold was used to measure casting length obtained under variations in casting temperature; this pattern is proposed as a standard measure of CSE. A Bernoulli 'free-fall' numerical model is shown to reproduce the principal features of such casting, with some evidence of viscosity limitation of the turbulent flow at long casting lengths. Direct measurement of melt velocities confirmed turbulent flow in the mold. A method is also suggested for assessing the influence of investment porosity on CSE. © 1992.
Persistent Identifierhttp://hdl.handle.net/10722/153786
ISSN
2015 Impact Factor: 3.931
2015 SCImago Journal Rankings: 1.339
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLuk, HWKen_HK
dc.contributor.authorDarvell, BWen_HK
dc.date.accessioned2012-08-08T08:21:34Z-
dc.date.available2012-08-08T08:21:34Z-
dc.date.issued1992en_HK
dc.identifier.citationDental Materials, 1992, v. 8 n. 2, p. 89-99en_HK
dc.identifier.issn0109-5641en_HK
dc.identifier.urihttp://hdl.handle.net/10722/153786-
dc.description.abstractEvaluating castability as a property of dental casting alloys is an unworkable concept, since any measure is demonstrably affected by several external factors. Casting System Effectiveness (CSE) is shown experimentally and theoretically to depend primarily upon the time taken for the advancing front to freeze. A spiral tube mold was used to measure casting length obtained under variations in casting temperature; this pattern is proposed as a standard measure of CSE. A Bernoulli 'free-fall' numerical model is shown to reproduce the principal features of such casting, with some evidence of viscosity limitation of the turbulent flow at long casting lengths. Direct measurement of melt velocities confirmed turbulent flow in the mold. A method is also suggested for assessing the influence of investment porosity on CSE. © 1992.en_HK
dc.languageengen_US
dc.publisherElsevier Inc. The Journal's web site is located at http://www.elsevier.com/locate/dentalen_HK
dc.relation.ispartofDental Materialsen_HK
dc.subject.meshAccelerationen_US
dc.subject.meshDental Alloysen_US
dc.subject.meshDental Casting Investmenten_US
dc.subject.meshDental Casting Techniqueen_US
dc.subject.meshGold Alloysen_US
dc.subject.meshHydrostatic Pressureen_US
dc.subject.meshMathematicsen_US
dc.subject.meshModels, Theoreticalen_US
dc.subject.meshPorosityen_US
dc.subject.meshReproducibility Of Resultsen_US
dc.subject.meshSurface Tensionen_US
dc.subject.meshViscosityen_US
dc.titleCasting system effectiveness- measurement and theoryen_HK
dc.typeArticleen_HK
dc.identifier.emailLuk, HWK: wkluka@hkucc.hku.hken_HK
dc.identifier.emailDarvell, BW: b.w.darvell@hku.hken_HK
dc.identifier.authorityLuk, HWK=rp00008en_HK
dc.identifier.authorityDarvell, BW=rp00007en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid1521699-
dc.identifier.scopuseid_2-s2.0-0026825364en_HK
dc.identifier.volume8en_HK
dc.identifier.issue2en_HK
dc.identifier.spage89en_HK
dc.identifier.epage99en_HK
dc.identifier.isiWOS:A1992JC08200004-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLuk, HWK=7006636056en_HK
dc.identifier.scopusauthoridDarvell, BW=7005953926en_HK

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