文献翻译激光熔覆陶瓷Word下载.docx

文献翻译激光熔覆陶瓷Word下载.docx

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Obtainsthematerialthickliquidtheinorganicbondandthesolventandtheceramicpowdermix;

Willexpectspreadsinonthesubstrateblockwhichhasnotagglutinated;

Driesandstrengthensthematerialthickliquidthinlayer;

Ceramiclevelhasnotagglutinatedwhichwiththelaserscan;

Thepartwhichfromhasmeltwhichcoversontheceramicworkpieceremovingthemelthasnotcovered.Theelectronictunnelmicroscopepicturehaddemonstratedtheneighboringtwoceramiclevelmeltcoversjointpart.Hasindicateditsbendingstrengththroughthreebendingstrengthstestsbetween3～12Mpa.Compareswithotherlaminationmethods,thismethodistheceramicbodywhichcoverswiththelaserdirectmelthasnotagglutinatedandobtainstheceramiclevelbutnottoneedtraditionalthecolumntoburntheprocess.Thismethodhastheverybigpotentialinthemanufactureprecisionceramicspartaspect.

Keyword:

Precise;

Ceramicpart;

Ceramiclaserfusion;

Materialthickliquid;

Ceramiclevel;

Flexuralstrength.

1introduction

Alreadysomemanylaminationmanufacturemethodmadetheceramicpart,theirmajorityallwasjoinstheceramicpowderwiththepolymerbond.Becausetheceramicpartintensityisdecidedbythepolymerintensity,thereforeobtainsthroughthesemethodstheceramicpart,hasnotagglutinatedthebodyintensityusuallynottobeabletosatisfytheindustryusetherequest,butithasnotagglutinatedthebodythermalstabilityalsobecausethepolymerexistencetoberestricted.Therefore,hasnotagglutinatedthebodytohaveinthestoveaftertheintensityandthethermalstabilitywhichfollowingagglutinatesobtainsneeds.Inagglutinatesintheprocesstobeabletohavethecontraction,inmakesinthecomplexpartprocesstobeableinparticularinevitablytohavethedistortiondistortion.

Thepresentpaperproposedonemanufactureceramicspartnewlaminationmethod,namelythelaserceramicsmeltcovers（CLF）.Thismethodiscausestheceramicpowdermeltthroughlaserprocessingtocoverandtounifyintogether.

2lasersceramicsmeltcoversprinciple

Ifshinesthelaserlightbeamalongastraightlineonthelooseceramicpowder,theceramicpowderwillmelt,butwillbeabletoformthestraightstriationwhichmanypelletsbutwillnotbeweexpected,thiskindofphenomenonwillbecalledthespheroidization.Accordingtotests,iftheceramicpowdermeltsonifthechemicalcompositionsamesolidledgerwall,meltingliquidcompletelymoistledgerwall.Firststatestheledgerwallorhasnotagglutinatedthebodytobeallowedthroughtodrythedryingagentthickliquidtoobtain,expectsthethickliquidisbytheceramicpowder,theinorganicbondandthesolventiscomposed.Whenthelaserlightbeamshineswhenhasnotagglutinatedonthebody,hasnotagglutinatedthebodysurfacetomeltandtheadherencyinhasnotagglutinatedunderthebodypart.Maycomposethethreedimensionalworkpiecethroughthismethodsystemthetwo-dimensionaljoiningpart.

Coveredtheprincipleaccordingtotheabovelasermelttoappearoneceramicpartmanufacturemethod（theAmericanpatent,thepatentnumber:

6217816B1）chart1hasdemonstratedthismethodfivesteps.Preparestheevenmaterialthickliquid（step1）.Thenthematerialthickliquidwhichwillpreparewiththemachinerymethodnearlystepprepareshasnotagglutinatedthebodythinlayer（step2）.Asaresultofthebondagglutinationfunction,obtainedhasnotagglutinatedthebodythinlayertobeabletoobtainasfaraspossibleisdryandtheenhancement.（Step3）.Throughthehighenergylightbeam,usesthelaserlightbeamasfaraspossibletheillumination,causesnottoagglutinatethebodythinlayertocoveralongthelightbeamilluminationwaymelt,causestheceramicmemberpartiallytounifyintogether（step4）.Throughcontrolsthehighenergylightbeamtheway,maymaketheceramicpartthearbitraryshapetwo-dimensionaljoiningpart.Thesimilarmethodmayinontheceramiclevelwhichpreparespreparethesecondceramiclevelandwiththeceramiclevelwhichpreparesunifiedintogether.Afterduplicatesthiskindofprocesstobepossiblemanytimestomakethethreedimensionalceramicpartbyplace.Finally,removeshasnotagglutinatedonthebodynotbythehighenergylightbeamilluminationpart（step5）.Mayfastproducetheceramicpartwiththismethod.

3experimentalresults

Thisprocesshastwospeciallyworthnotingsthecharacteristic.

First,thisprocessisamoistprocess,itiscontainsthepowderandtheliquidmaterialthickliquidtakestherawmaterial,thisifhismethodisnotsame,thealternativemeansarewiththesolid,thepowderandtheliquidtaketherawmaterial.Thesecondcharacteristicisdifferentwiththetraditionalmethodcoversthroughthedirectlaserceramicsmelttheceramicpowderunifiesintogether,thetraditionalmethodmajorityisusestheliquidtoagglutinateorthesolidagglutinates.Asaresultofthesecharacteristics,thelaserceramicsmeltcovershastheintrinsicmerit,simultaneouslyalsohasthequestionwhichmustsolve.

Thelaserceramicsmeltcoverstherawmaterialistheinorganicbond,thesolventandtheceramicpowdermixpreparationmaterialthickliquid.Becausemayobtainthethinnerevensuperfinematerialthickliquidthesolidparticle,thereforemayunderstandthemicroscopicceramiclevelthroughthismethodthickness.Embarksfromthisspot,theneededmaterialsthickliquidonpossiblymakesastherawmaterialagglutinates（SLS）comparedtothetraditionalchoicelaserorthreedimensionalspurtsanIndiamethodpreciserproduct.ThechoicelaseragglutinatesthreedimensionalwithspurtstheIndiamethodisdoesthepowdertotaketherawmaterial.Aftertheshophonestmaterialthickliquidthinlayer,mustdryobtainithasnotagglutinatedthethinbodylevel.Inthedryingprocess,thecapillaryvesseltractionwillcausetheceramicpowdertounifyinwillformtogethercompactlyhasnotagglutinatedthebodylevel,butcertainlywillnotneedtoperformtotheceramicpowdertovibratestrengthenstheceramicpowderlevel.

Moreover,thedryingprocessalsohassomeshortcomings:

Ifbecauseneedstodrytheprocessontheneedmorepreparationstime,simultaneously,hasnotagglutinatedthebodyalsotohavehasthecrackpossibility.Thereforeneedstooptimizedesignsonekindofdryingprocesstoreducethedryingtimeandtoavoidthecracktheproduction.Thepresentpaperhasthevitalroleregardingthistechnicalcommercialuse.

Thelaserceramicsmeltcoversusesthehighenergylightbeamtheceramicpowdertofusetogetherintogether.Thisprocessincludingthreemainoperationalparameters:

Laserenergydensity,laserscanningvelocityandscanningpitch.Underiscoversanexperimentaccordingtothelaserceramicsmeltwhichtheprincipledoes.Itsoperationalparameteris:

Thelaserenergydensityis:

10000W/cm,thescanningvelocityis:

17.5mm/s,thescanningpitchis:

0.8mm.Becausethelaserluminousspotdiameterwhichbecauseusesprobablyis0.8mm,thereforeoverlapsforzero.Chart2andchart4isthemeltingceramiclevelmicroscopicstructurewhichobservesthroughtheelectronictunnelmicroscope.

图2电子隧道扫描显微镜下陶瓷部件熔化层的图像

Chart2istwoVglyphcurveceramiclevellateralsectionchart.VcharactershapeiswiththelaserenergyGaussiandistributionconsistent.Ishigherasaresultofthelaserluminousspotmiddlepartialenergies,thereforeisshonebythisparthasnotagglutinatedtheceramicbodytocompareotherpartstohavemorevolumesthemelttocover.Thispartissunkeninthespacealsocomparesotherpartofmany.Chart3hasdemonstratedthiskindofrelations.

Themeltcoverstheceramiclevelthicknessisthelasersweepsthesurfaceparameterthefunction.Thehigherenergydensityandlowersweepsthesurfacespeedtobeallowedtoobtainthethickerceramiclevelthickness.Mustcontrolthelaserparametertoguaranteetheneighboringtwoceramicleveloverlapping.Chart4haddemonstratedlayeruponlayerjoinsfiveceramiclevelslateralsectionchart.Thiskindofplateshadprovenintheworkingconditionwhichstatesmaytheceramiclevelmeltcoverinthesameplace.

图3高斯分布能量对陶瓷层熔化深度图4电子隧道扫描显微镜下的具有5个熔化层陶的影响图片

Thetraditionalhomepositionpreparationhasnotagglutinatedtheceramicbodymethodtohaveintoenhancethetemperatureundertheconditionfurthertoagglutinate,simultaneouslybecausethevolumecontractionpossiblycancausethedistortiondistortion.Becausethelaserceramicsmeltcoversisthedirectpreparationceramicslevel,eachceramiclevelmaytheceramiclevelwhichfillsthroughbehindcompensateintheZaxisdirectionsizecontraction,therefore,compareswiththetraditionalmethod,ismakingthecomplexpartaspectinparticular,thismethodmaymakethepreciserceramicpart.

Coverstheceramicmethodproductionwiththelasermelttheproductintensityregardingitsindustrialapplicationcountformuch.Underisanexperimentwhich（ASTM）doesaccordingtotheAmericanmaterialexperimentassociationstandard.Coversthemethodproductionwiththelaserceramicsmelttomeasurethetestspecimenfor45mm×

4mm×

3mm,easycarriesonthreeintensitiesteststoit.Eachthicknessis0.1mm;

Overlapsis50%;

Thelaserenergyandsweepsthesurfacespeedisinvariableobtains4.5J/mm～10J/mmtheenergydensity.

Testswiththreebendingstrengthsreflectoscopereflectorsobtainstheceramicparttheintensity.Atypebendingstrength（seeFigure5）in3～14Mpabetweentochange.Theincreaseenergydensitycancause