简介:AhotrunnermanifoldasaPvTapparatus,ApplicationofindustrialwasteofPET/PEcore/sheathnon-wovenfabricstocompositematerials,Automationandinnovativeprocesstechnologymouldsbirkby'sfuture,HDPEblow-moldedbottlepinch-offweldstrengthatvariousmolecularweights,Mercer'skernelbasedlearningforfaultdetection,Micromoulding:processcharacteristicsandproductproperties,Microstructureofblowmoldedbottlesfrompolyolefinnanocompositespreparedbymeltcompounding.
简介:NewBattenfeldRl0robotfirstpresentedatFAKUMA:thedynamicstarperformeroftheUNIROBseries;Polymerweldingofinjectionmoldedceramicsandmetals;Shopfloorschedulingwithsimulationbasedproactivedecisionsupport;Thepotatoasarawmaterialforbiodegradableplastics;Thresholdenergyswitchinganditsapplicationtowirelesssensinginhighenergymanufacturingprocesses;Tribologicalstudiesofpolyamide6andhigh-densitypolyethyleneblendsfilledwithPTFEandcopperoxideandreinforcedwithshortglassfibers。
简介:X-raydiffraction(XRD)anddifferentialscanningcalorimetry(DSC)wereemployedtoinvestigatetheinfluenceofNicontentonthecrystallizationofamorphousZr70Cu30-xNix(atomfrationin%)alloys,ExperimentalresultsshowthatwiththeNicontentincreasingtheactivationenergiesforcrystallizationofamorphousZr70Cu30-xNixalloysincreasecorrespondingly,indicatingthatthethermalstabilityisgreatlyimproved.AlltheDSCtracesofamorphousZr70Cu30-xNixalloysexhibittwoexothermicpeaks,suggestingthatthecrystallizationprocessviaadouble-stageticles,whilethesecondonecorrespondstotheprecipitaionofnano-scaleZr2Niphaseandcrystallizationofresidualamporphousphase,ThemechanismonthecrystallizationofamorphousZr70Cu30-xNixalloyswasdiscussed.
简介:Theeffectsoftwopost-weldheattreatmentprocessesonthemicrostructureandfatiguepropertiesoftheelectronbeamweldedjointsof30CrMnSiNi2Asteelwerestudied.Electronbeamlocalpost-weldheattreatment(EBLPWHT),inavacuumchamber,immediatelyafterweldingandatraditionalfurnacewholepost-weldheattreatment(FWPWHT)wereaccepted.Theexperimentalresultsshowthat,afterEBLPWHT,themainmicrostructureofweldischangedfromcoarseacicularmartensiteintolathmartensite,andbasemetalischangedfromferriteandperliteintoupperbainiteandresidualaustenite,howeverthemicrostructuresofdifferentzonesofjointsinFWPWHTconditionsaretemperedsorbite.Thefatiguecrackgrowthrateda/dNofweldsandbasemetalarenotobviouslychangedamongEBLPWHT,FWPWHTtestandas-welded(AW)test,asthemechanicalpropertiesofmaterialshaveacertainbutnotlargeeffectontheda/dNofweldedjoints.TheresistancetonearthresholdfatiguecrackgrowthdataofweldedjointscanbelargelyimprovedbyEBLPWHTanditisrelatedtomicrostructureandcrackclosureeffect.