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稀土在铸造轧辊中的应用 Title:TheApplicationofRareEarthElementsintheCastingofRollingMills Abstract: Rareearthelements(REEs)havegainedsignificantattentioninvariousindustrialsectors,andtheirapplicationinthecastingprocesshasshownimmensepotential.Thispaperexplorestheroleofrareearthelementsinthemanufacturingofrollingmills,highlightingtheirimpactonenhancingthequalityandperformanceofthesevitalcomponents.ThediscussionencompassesthepropertiesofREEs,theireffectsonthemicrostructureandmechanicalpropertiesofcastmaterials,aswellastheeconomicandenvironmentalbenefitsassociatedwiththeiruse.Byunderstandingandharnessingtheuniquepropertiesofrareearthelements,thecastingindustrycanimproveefficiency,enhanceproductquality,andcontributetosustainabledevelopment. 1.Introduction 1.1Background 1.2Researchobjective 2.RareEarthElements:PropertiesandAvailability 2.1DefinitionandclassificationsofRareEarthElements 2.2PropertiesandcharacteristicsofRareEarthElements 2.3AvailabilityandsourcingofRareEarthElements 3.RareEarthElementsinMetalCasting 3.1Influenceonmicrostructure 3.1.1Grainrefinement 3.1.2Modificationofeutecticstructure 3.1.3Preventionofcastingdefects 3.2Mechanicalpropertyenhancement 3.2.1Tensilestrengthandhardnessimprovement 3.2.2Enhancedwearresistance 3.2.3Increasedhigh-temperatureresistance 4.ApplicationofRareEarthElementsintheCastingofRollingMills 4.1Compositionandcharacteristicsofrollingmillcastings 4.2RoleofRareEarthElementsinrollingmillcastings 4.2.1Grainrefinementandcontrol 4.2.2Enhancementofmechanicalproperties 4.2.3Improvementofrollingmillperformance 4.3Casestudiesofsuccessfulapplications 5.EconomicandEnvironmentalBenefits 5.1Costsavingsthroughreducedmachiningandalloyuse 5.2Increasedproductlifespananddurability 5.3EnvironmentaladvantagesofRareEarthElementsusage 6.ChallengesandFutureProspects 6.1Costandavailabilityfactors 6.2Awarenessandadoptioninthecastingindustry 6.3Recentadvancementsandfuturetrends 7.Conclusion 7.1Summaryofkeyfindings 7.2Implicationsandrecommendationsforindustrypractitioners