鋼鐵相關(guān)術(shù)語表英語

精選優(yōu)質(zhì)文檔-----傾情為你奉上精選優(yōu)質(zhì)文檔-----傾情為你奉上專心---專注---專業(yè)專心---專注---專業(yè)精選優(yōu)質(zhì)文檔-----傾情為你奉上專心---專注---專業(yè)GlossaryNumeroustermsareusedinconnectionwiththemanufacture,saleanduseofcoatedsteelsheet.Thefollowinglistdefinesthemorecommonterms:||||

||

|

||

||||

|

|

||

|

||

AAging-Changesinphysicalandmechanicalpropertiesthatoccurwhenlowcarbonsteelisstoredforsometime.

Agingisalsoacceleratedbyexposureofsteeltoelevatedtemperatures.

Annealing-Aprocessinvolvinghigh-temperatureheatingandcoolingoftheas-rolledcoldrolledsteelsubstratetomakeitsofterandmoreformable.

BBackerCoat-Usuallyreferstothecoatingonthereversesideofaprepaintedsheet.Thebackercoatingisgenerallynotasnarrowlyspecifiedwithreferencetoitscolor,thicknessandcompositionasisthetopcoat.

CCamber-Thedeviationofasideedgefromastraightline,themeasurementbeingtakenontheconcavesidewithastraightedge.

CarbonSteel-Steelwhichowesitspropertieschieflytocarbonwithoutsubstantialamountsofotheralloyingelements;alsoknownasstraightcarbonsteelorplaincarbonsteel.

ChemicalTreatment-Anaqueoussolutionofcorrosion-inhibitingchemicals,typicallychromatesorchromate/phosphate.

CoilBreaks-Creasesorridgesinsheetthatappearasparallellinesacrossthedirectionofrolling,andthatgenerallyextendthefullwidthofthesheetorstrip.

Alsoreferredtoas.

ColdRolledProducts-Flatrolledproductsforwhichtherequiredfinalthicknesshasbeenobtainedbyrollingatroomtemperature.

ColorStandard-Apaintedsheetpanelwithaprescribedcolorofpaintrepresentingtheprecisecoloritisintendedtoproduceintheprepaintedsheet.Thecolorstandardwillpreferablyalsobeexpressedintermsofphysicalattributesofhue,lightnessandsaturationcalledtristimulusvaluesorderivativesofthesevalues.Acompletecolorstandarddefinitionwillusuallyincludepaintedpanelsrepresentativeofthelimitsofacceptabledeviationfromtheprecisestandardcoloraswell.

CommercialSteel(CS)-Sheetofthisqualityisforsimplebendingormoderateforming.

CommercialSteelsheetcanbebentflatuponitselfinanydirectionatroomtemperature.

ContinuousCasting-Acastingtechniqueinwhichacastshapeiscontinuouslywithdrawnthroughthebottomofthemoldasitsolidifies,sothatitslengthisnotdeterminedbymolddimensions.

ConversionCoating-Thechemicaltreatmentfilmappliedtothesteelormetalliccoatedsheetpriortopainting.

Corrosion-Gradualchemicalorelectrochemicalattackonametalbyatmosphericmoistureorotheragents.

CriticalSurface-Intendedformaterialappliedtocriticalexposed/paintedapplicationswherecosmeticsurfaceimperfectionsareobjectionable.Theprimesidesurfacewillbefreeofrepetitivetypeimperfections,gouges,scratches,scaleandslivers.Thissurfacecanonlybefurnishedasapickledproduct.

Crown-Acontouronasheetwherethethicknessincreasesfromsomeedgemeasurementtothecenter.

CutEdge-Removaloftheas-rolledhotmilledge.Coilendsarecroppedbacktogaugewhencutedgeisordered.

CuttoLength-Whenaspecificordiscretelengthisspecified.

DDeepDrawing-Theprocessofworkingmetalblanksindiesonapressintoshapeswhichareusuallymoreorlesscup-likeincharacter.

Drawing-Formingrecessedpartsbyforcingtheplasticflowofmetalindies.

DrawingSteel(DS)-SheetofthisqualityhasagreaterdegreeofductilityandismoreconsistentinperformancethanCommercialSteelbecauseofhigherstandardsinproduction,selectionandmeltingofthesteel.

DeepDrawingSteel(DDS)-SheetofthisdesignationshouldbeusedwhenDrawingSteelwillnotprovideasufficientdegreeofductilityforfabricationofpartshavingstringentdrawingrequirements,orapplicationsthatrequirethesheetbefreefromaging.Thisqualityismadebyspecialsteelmakingandfinishingpractices.

DentResistant-BHSeries

-Sheetofthisdesignationisproducedfrompartiallystabilizedsteelandoffersauniquecombinationofas-receivedformabilityandfinalpropertiesafterfabrication.

Sheetofthisdesignationcombinesstrengthandhighformability.

Althoughthissteelisnon-agingatroomtemperature,itgainsstrengthfromwork-hardeningduringfabricationandfromcarbon-agingduringpaint-baking.

(Sometimes

referredtoas"bakehardenable.")

ExtraDeepDrawingSteel-Sheetofthisdesignationhassuperiorformabilityandexcellentuniformity.

Itisproducedfromsteelhavingaverylowcarboncontentwithstabilizingelementsaddedtomakeitinterstitialfree.

Itisanon-agingsteelsheetwithhighresistancetothinningduringdrawingandissuitableforcriticalformingapplications.

DryFilmThickness(DFT)-Thethicknessofthedrypaintfilm.

DSTypeBSteel-Productintendedforapplicationsthatrequireparticularlyseveredrawingandforming.

Ductility-

Theabilitytopermitchangeofshapewithoutfracture.

Inflatrolledsteel,ductilityisusuallymeasuredbyhardnessormechanicalpropertiesinatensiletest.

EElongation-Thepercentincreaseofagivendistance(usually2inches)priortofractureduringtensiletesting.

Embossedsheet-Anembossedsheetisonehavingaprominent,impressedtextureorpatternonitssurface(s).Ifthedefinedtextureisappliedtoessentiallyonsurfaceonly,itismostproperlytermedacoinedsurface.Ifthetextureorpatterncarriesthroughtheentirebodyofthesheetandappearsonbothsurfacesitisatrueembossedsurface.

ExtraSmoothGalvanized-AnExtra-Smoothfinishisimpartedtohot-dipmetallic-coatedsteelsheetbytemperrollingaftercoatingtodecreasethesurfacereliefthatoccurswhenthemoltencoatingsolidifies.Thespanglepattern(grainpattern)ismadedistinctlylessvisiblebythemattefinishimpartedbytherollingoperation.MostExtra-Smoothsheetisintendedforeitherprepaintedorpostpaintedapplications.

FFlatness-Flatnessisameasureofacutlengthsheet'sabilitytoconformtoaflathorizontalsurface.Maximumdeviationfromthatsurfaceisthedegreetowhichthesheetisoutofflat.FlatnessisoftenexpressedquantitativelyineitherSteepnessorI-Units.

FinishCoat-Thetopcoatorexposedprimesidepaintfilm.

Flexibility-Thedegreetowhichapaintfilmcanwithstanddeformationwithoutsignificantchangeincolorandappearance.

GGloss-Thepropertyofasurfacerelatedtoitsabilitytoreflectlight.Themostcommontypeofglossofinteresttoappearanceattributesisspeculargloss.Theparameterswhichmustbespecifiedforthedeterminationofthispropertyaretheanglesofincidenceofthelightsource,theangleofviewingoftheglossandtheangulardispersionsofthemeasuringbeams.

HHardness-Resistanceofmetaltopenetrationofthesurface.

HighStrength-Productintendedforapplicationswheregreaterstrengthiscritical.

HighStrengthtypicallybeginsat35ksiminimumyieldstrength.

HighStrengthLowAlloy(HSLA)-Aspecificgroupofsteelsinwhichthestrengthlevelsareachievedbytheadditionofmoderateamountsofalloyingelements.

Themostcommonarecolumbium,vanadiumortitanium.

HotRolledSheet-Steelsheetthatisprocessedtoitsfinalthicknessbyrollingathightemperaturesonaspeciallydesignedhot-rollingfacility.

Alsocommonlyknownashotrolledunprocessed.

HotRolledSheetNon-TemperRolled-AU.S.SteeldefinitionforproductsuppliedasacoildirectlyofftheHotStripMillwithnoadditionalprocessing.

HotRolledSheetPickled-AU.S.Steeldefinitionforamilledgecoilthatispickled,oiledandtemperrolledwithcoilendscroppedbacktomeetgaugetolerances.

HotRolledSheetPickledNon-TemperRolled-AU.S.Steeldefinitionforamilledgecoilthatispickledandoiledwithcoilendscroppedbacktomeetgaugetolerances.

HotRolledSheetProducts-FlatsteelproductsthatarebroughttofinalthicknessbyrollingthroughaHotStripMillathightemperatures.

IImpactTest-Atestwhichisintendedtoevaluatethebrittleness,toughness,adhesionandhardnessofpaintfilmsappliedtometalsbysubjectingthemtoanindentimpactforce.

Inclusions-Particlesofforeignmaterial(suchasoxides,sulfidesorsilicates)insteelascast.

InclusionShapeControl-Theuseofrareearthmetalsorcalciumalloystocontrolthemorphologyofinclusions,inordertoprovideimprovedmechanicalpropertiesforselectapplications.

IntercoatAdhesion-Theadherencewhichisobservedbetweentheprimerandtopcoatofapaintsystem.

KKilledSteel-

Steelthatisdeoxidizedbysiliconoraluminumtoreducetheoxygencontentinthemoltensteeltoaminimumpriortosolidificationofthemetal.Killedsteelshavemoreuniformpropertiesandchemicalcompositionthanothertypes.

LLeveling-Flatteningofrolledsheetbyreducingoreliminatingdistortions.

Laminate-Acompositeconstructionofdissimilarmaterials,suchasametalandplasticfilm,usuallymadeupassheetproductandintendedtofunctionasthoughitwereasinglematerial.

Lüder'sLines-See.

MMatteFinish-Amoreuniformsurfacefinishimpartedtothesheetsurfacebytemperrollingwithshot-blastedrolls.

MechanicalProperties-Thepropertiesofamaterialthatrevealitselasticandinelasticbehaviorwhenforceisapplied,therebyindicatingitssuitabilityformechanicalapplications.

Mil-Atermusedtoindicatethethicknessofthepaintfilm.Adryfilmthicknessof0.001",i.e.,thestandarddryfilmthicknessaftercuringforseveralcommonpaints,isone(1)mil.

OOil-Appliedafterpicklingortemperrollingtoassistcustomerhandlingbyminimizinginter-wrapgouging,improvelubricityandprovideamorerustresistantproduct.

OiledSheet-Sheetproductthatisprocessedwiththefinalstepbeingtheapplicationofoiltothesurface.Usually,theoilisintendedtoprovideprotectionfromrustingduringshipmentandstorage.Theseoilsarecalledrust-preventativeoils.Theoilmayalsoservetoassistinthesubsequentfabricationprocess,butthisisnotusuallythemainpurpose.Oilsusedtoenhanceformabilityareoftencalledor"prelubes".

PPencilHardness-Aphysicalmeasurementofthehardnessofapaintfilmwhichisbasedontheresistanceofthefilmtocut-throughbypencilleadsofspecifiedhardness.Pencilhardnessvaluesrangebetween2Band5H.

Pickling-Removingsurfaceoxidesfrommetalsbyachemicalreaction.

PressureVesselSteel(PVS)-Productintendedforpressurevesselsandsimilarenduseapplications.

Prelubricant-Anoilcoatingthatisappliedtosteelsheettoenhanceformability(deepdrawing).Thislubricantisusuallyappliedwhenthecustomerwishestoavoidtheapplicationofaforminglubricantinhisplant.

PrimerCoat-Thebasecoatofpaintinatypicaltwo-coatsystem.Primercoatsareusuallyappliedtoproduceadryfilmthicknessofapproximately0.2mil.

QQuality-Atermusedtodenotethedegreeofperfectionofthesteelsheet.Often,forsheetproducts,relativequalityreferstothedegreeofperfectionofthesurface,i.e.,thelackofscratches,absenceofslivers,etc.Qualitycanalsorefertootherattributessuchasinternalsoundness,dimensionalcontrol,etc.

RReflectivity(Reflectance)-Atermtoindicatethepercentageofreflectedlightfromapaintedsurface.Consideredafunctionofcolorratherthanspeculargloss.Reflectancepercentagesusuallyrangefrom80%to90%forwhitecolorsto5%to15%fordarkcolors.Reflectivitystandardsvaryforeachindustryandspecificapplication.

RegistryPrinting-Printingsuccessivecolorsorfiguresinaprecisepatternandwithexactsuperposition.

RollForming-Afabricationprocesswherebythemetalsheetisdeformedcontinuouslyinalinearmannerbypassingitthroughaconsecutiveseriesofrollswhichproduceapredeterminedprofileinit.

SSaltspraytest-Amoistureandcorrosionresistancetestemployingacontrolledexposureofapaintedsheettoafogormistofasaltsolution,usually5%sodiumchloride,foraspecifiedtimeperiod,say500or1000hours.

Slit-Whentwoormorewidthsareobtainedfromthehotrolledsubstratewidth.

Theslittingoperationresultsinacutedge.

Spangle:

Thespangleofahot-dipcoatedsheetsurfaceisthevisualmanifestationofthegrainsthatformwithinthecoatingwhenitsolidifiesasthesheetemergesfromthepotofmoltencoatingmetal.Thespangleorgrainvariesinsize,brightnessandsurfacerelief,dependinguponanumberoffactors,mostofwhicharerelatedtothecompositionofthecoatingandcoolingpractices.

StructuralSteel:

Whenthistermisappliedtosteelsheet,itreferstothedesignationthatisusedforsteelsheetthatisproducedtomeetaspecificlevelofstrengthandformability.Theformabilityisexpressedaspercentelongationinatensiletest.StructuralSteelistypicallyusedforapplicationswherethestrengthofthesheetisanimportantdesigncriterion,i.e.,load-bearingapplications.

TTandemCoatingLine-Acontinuouscoilcoatinglinehavingtwoormorecoatingmachinesandcuringorbakingovensinthelinesoitiscapableofapplyingandcuringtwocoatsofpaintinonepassthroughtheline.

T-Bend0-,1-,2-,etc.-Amechanicaloperationwhereinasheetsampleisbentbackuponitselfwiththeinsidebendradiusspecifiedintermsofthesheetthicknesses.Thusa2-TBendisabendwithaninsideradiusequivalenttotwotimesthethicknessofthemetalsheetbeingtested.

TensionLeveling:

Amechanicaloperationwhereinsteelsheet,incoilform,isprocessedonaunitthat

stretchestheproductbeyonditsyieldpointtoimpartpermanentdeformation.Thestretchingoperationassiststoflattenthesheet.Tensionlevelingisconsideredtheoptimumprocesstoachievesuperiorflatnesscharacteristics.

TemperRolling-Alightcoldreductionofthesheetsteel.

Thisoperationisperformedtoimproveflatness,eliminatediscontinuousyieldingandtoobtainauniformsurface.

TensileStrength-Themaximumstressthatamaterialcanwithstand.

Intensiletesting,theratioofmaximumloadtooriginalcrosssectionalarea.

AlsocalledUltimateStrength.

Tint-Acolormodificationresultingfromthemixtureofawhitepaintandcoloredpaintsuchthatthewhiteisthepredominantcomponentandtheresultingcolorismuchlesssaturatedthatthepurecolorofthenon-whitepigment.

Tolerance-Atermthatisusedtoquantifytheallowabledeviationfromadimension.Forexample,