超声波焊头设计与制造.pdf

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1、Ferro-TitanitNikro128ChemicalcompositionCarbidephaseBinderphase(maincomponents)TiCCrCoNiMoFe3013.5945Balance(guidelinevaluesin%byweight)MicrostructureTitaniumcarbide+nickelmartensiteCharacteristicpropertiesThematrixstructureconsistsofahighlytough,age-har

2、denablenickelmartensite.Thechromiumcontentof13.5%providesgoodcorrosionresistance.Finish-machiningisperformedinthesolution-annealed,as-deliveredcondition.Subsequentage-hardeningtakesplaceatarelativelylowtemperatureof480°Candcanbeconducted,forexample,inaco

3、nvectionairfurnaceoranelectricallyheatedchamberfurnace.Theworkpieceremainsextremelytrue-to-sizeandlittlepronetodistortionduetothelowage-hardeningtemperature.MechanicalpropertiesDensityCompressionBendingModulusofShearServiceFurtherdataonthemechanicalstren

4、gthfractureelasticitymodulushardnesspropertiesuponrequestage-hardenedg/cm3N/mm2N/mm2N/mm2N/mm2HRC6.627501200294000117000approx.62PhysicalpropertiesThermalexpansioncoefficientbetween20and…°Cin10-6·°C-11002003004005006007008008.38.99.39.69.910.29.29.5Therm

5、alconductivityat…°CinW·cm-1·°C-11001502002503003504004505005506000.1710.1780.1880.1990.2120.2260.2420.2590.2760.2950.315MeasuringDampingfrequency(Hz)Q-1(10-5)260010.0710015.21400011.92200010.9Electricalresistivityat20°CinΩ·mm2·m-1201002003004005006001.10

6、1.121.171.211.251.311.67MagneticpropertiesMagneticCoercivefieldRemanencesaturationpolarisationstrengthmagneticallyclampablemTkA·m-1mT7403.7190UseGoodpossibilitiesofuseintheprocessingofabrasiveplastics–aspelletizerknives,injectionmouldingnozzles,dies,worm

7、sandbushes.Alsoaswear-resistantringsincentrifugalpumps,chargingheadsandcircularcuttersinpreserve-canfillingmachines.06/2001Ferro-TitanitNikro128SolutionannealingAnnealingCoolingHardnessaftertemperature°CannealingHRC850(2–4hvacuum)1–4.5barN2approx.53Thema

8、terialissuppliedinsolution-annealedconditionbytheproducer.Duetothisfact,onlyageingat480°Cisstillrequiredafterfinish-machining.Age-hardeningHardnessaftertemperature°Cage-hardeningHRC480(6–8h)approx.62Age-hardeningcurve64,00