简介：Thispaperdealswithacomparativeresearchbetweentwoprocessesofgranulation,namelymini-pelletizedsintering(MPS)andhybridpelletizedsintering(HPS),focusingonaspectssuchastheballingeffect,production,quality,andmineralographyandmetallurgicalperformanceofsinter.Theresultsindicatethatbothmethodscanresultinasatisfyingcapabilityinballingeffectandmetallurgicalperformanceofsinter,qualifiedtomeettheplantproductionrequirements,butwhenthegranulationtimeandgranulatingmoisturearesettoaround6minutesand7.0%respectively,MPSisbetterthanHPS.

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简介：Multiphaseflowcontrolwithelectromagneticbraking(EMBr)iswidelyusedinthecontinuouscastingofsteelslabs.Thebasicaimoftheflowcontrolsystemoftheprocessistodelivermoltensteelfromtheladlethroughthetundish,uppertundishnozzle,slidegate,andsubmergedentrynozzleintothemoldregionwithminimaldefects.Thisrequirestheoptimizationofturbulencelevelsatameniscustoavoidbothanexcessivelyfastflow(whichcreateshighfluctuationsofthemeniscuslevelinadditiontoslagentrapment,surfacenonuniformities,andsurfacedefects)andinsufficientslowflow(whichleadstomeniscussolidification,inadequatefluxinfiltration,andsurfacedefects).Inthisstudy,aEulerian-LagrangianapproachisusedtoinvestigatetheeffectsofEMBrandArbubbleinjectiononthesurfaceflowvelocity.TheresultsshowthathighArinjectionratescanleadtoanincreaseinsurfacevelocity.

简介：Thetemperaturedistributionofsteelplatesisaffectedbyheatingratesandheatingcurvesintheprocessofinductionheating.Themagneticfluxdensityinsidetheinductionfurnacewasmeasured,thedistributionofmagneticfluxdensitywasanalyzedandtheuniformareaoftheinductionheatingtemperaturedistributionwasascertained.Thelocationsformeasuringtemperatureweresetandthetemperatureindifferentprocesseswasmeasured.Theinfluenceofheatingratesandheatingcurvesonthetemperature...

简介：Inrecentyears,lifecycleassessment(LCA)methodiswidelyusedingreenmanufacturing,energysaving,andemissionreductionofironandsteelproduction.BasedonthecarbonsteelLCAresearchandrelevantstandardsathomeandabroad,theapplicationofLCAinstainlesssteelinBaosteelwasstudied.Throughthestudyofstainlesssteel'sgoalandscope,lifecycleinventory,LCAandinterpretation,knowledgeandexperienceofLCA'sapplicationinstainlesssteelwasobtained.

简介：ThecopolymerswereformedbythegraftcopolymerizationofPVCwithacrylicrareearth.TheprincipleandmethodofthegraftcopolymerizationofPVCandacrylicrareearthwerediscussed.ThegraftcopolymerswerecharacterizedbyFT-IRspectraandscanningelectronmicroscope(SEM).Thethermalstabilityofthegraft-copolymerswasstudiedbythermogravimetricanalysis(TG).Theexperimentresultsshowthatthethermalresistanceandtoughnessofthegraftcopolymersareobviouslyenhanced.

简介：ＰｒｅｐａｒａｔｉｏｎｏｆＰｏｌｙｓｔｙｒｅｎｅＤｏｐｅｄｗｉｔｈＹｔｒｉｕｍＥｔｈｏｘｉｄｅａｎｄＳｔｕｄｙｏｎＴｈｅｉｒＣｏｏｒｄｉｎａｔｉｏｎＳｈｅｎｇＹｕ（生瑜），ＺｈａｎｇＷｅｎｇｏｎｇ（章文贡）（ＩｎｓｔｉｔｕｔｅｏｆＰｏｌｙｍｅｒＳｃ...

简介：AnalyzedandstudiedthecharactersofhighstrengthlowalloysteelwhichcontainMo,Cr,NbandNi.etc.Followingactualrolling,combiningthefeatureofrollingmode,andexploitingtheequipmentadvantageof5mHeavyPlateMill,optimizedthematerialdesign,heatingtemperatureandrollingmethod,stabilizedrollingprocessofthinalloyedsteel,thequalityindexwasadvanced.

简介：Basedontheinvestigationoftheluminescenceofaseriesofrareearthorganicchelates,somerelationshipsbetweenluminescenceandthestructureofthechelateswereproposed:theintensityofsensitizedluminescenceofcentrallanthanideions(Ln3+)inarareearthorganicchelatedependson(1)thesuitabilityoftheenergygapbetweentheexcitedtripletenergyleveloftheligandsandthelowestexcitedenergylevelofLn3+ions;(2)therigidityandplanarityofthestructureofthechelatemolecule;(3)theexistenceofasuitablesecondaryligandwhichmayincreaserigidityandthestabilityofthechelatemolecule;and(4)theexistenceofasuitableπ-conjugatedsysteminthechelatemolecule.Accordingtotheaboverelationships,25novelorganicligandsweredesignedandsynthesized,andtheirlanthanidechelateswereprepared.Investigationofthephotoluminescenceforthenewchelatesshowsthatsomeofthechelatesarestronglyluminescent,andareappliedtofluoroimmunoassayfordeterminationofhumanimmunoglobulin(IgG),topreparationoffluorescentplastics,andtodeterminationofgrowthhormoneforplants.Twonovelspectroscopy-probetechniquesforstructureofcoordinationcompoundsandbiologicalmoleculeswereproposedanddevelopedbasedonvibronicspectroscopyofTb3+complexesandfluorescenceofCe3+.

简介：HeavyplaterollingprocessingineverysinglepasswassimulatedbythemethodofFEM.Distributionoftheinflowstrainonthespecifiedpathandrelatedparameters(platethicknessH,passreductiondH,rollingspeedV)inthethicknessdirectionoftheplatecenterwerestudied.TheresultsshowthattheplatethicknessHandpassreductiondHhavesignificanteffectsontheinflowstrainonthespecifiedpath,whiletherollingspeedpresentslittleeffect.Therelationshipsbetweenthestrain(PEEQ)andtheplatethickness(H)/passreduction(dH)werealsoestablishedbasedonthesimulationresults.

简介：Incontinuousannealinglines/hotgalvanizing,stripsareguidedbyupperandlowerrollsinanalternateupanddownverticalmotion.Thiskindofprocessconsistingofheating,soaking,andcoolingfurnaces（orzones）hasseveraladvantagesintermsofproductivityandproductquality.Mainproblemsencounteredincontinuousannealinglinesaremisguidingandformationofbuckling.Thestripbucklingcausesthestriptoberejectedand,intheworstcase,thestripbreaksandthecontinuousannealinglinesarecompelledtostop.Inthispapertheelastic-plasticmodelofthestriptravelingandthecorrespondingboundaryconditionwereconstructeddependantonthetheoryofmechanic.Simulationsareperformedintwosteps.First,ahomogeneouslongitudinaltensilestressisappliedatoneendofthestrip,theotherendofthestripandtherollarerestricted.Inthesecondstep,theappliedtensionremainsconstant.Auniformdisplacementisappliedtotheotherendofthestripandarotationtotheroll.Thetransversecompressivestress,thebucklingformationduringstriptravelingprocess,thelocationforthebucklingtakingplaceandthebucklingcriterionwereinvestigatedsystematically.Theresultshowsthatthetransversecompressivestressincreaseswiththeincreaseofthetensilestressandthecrownofthetaperedroll.Becausethecontactareabetweenthetaperedrollandthestripincreasewiththedecreaseofthecrown,thetensilestressdistributionismorehomogeneousinthetransversedirectionofthestrip.Anadditionaltransversecompressivestressiscreatedandabucklingisalsoobservedduetothefrictionduringthestripmotioninthesecondstep.Oncethebucklingisappearance,itisveryhardtoberemovedonlythroughdecreasingtheappliedlongitudinaltension,becausethestripwrinklestillkeepshighlevelduetotheeffectofthebuckledstrip,thewrinklewouldevolveintobucklingeventually.Thebucklingformationprocesspredictedbythefiniteelementmodelisverysimilartothose

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简介：Nanocrystallinetitaniaasphotocatalysthasattractedconsiderableattentionforitspotentialuseinenvironmentalcleaning.Recently,lanthanideionsdopedtitaniasampleshavebeenshowntoincreasethephotocatalyticefficiencyofselectedreactions.Inthiswork,TiO2nanoparticlesdopedwithEr3+werepreparedviaanultrasonicassistedsol-gelmethod.Theopticalpropertiesofthesamplesweredeterminedbyphotoacoustic(PA)spectroscopy.Itwasfoundthattheabsorptionedgeshiftedtolowerwavelengthw...

简介：Ininversemicroemulsion,rareearthferrite/polyacrylamidemagneticmicrospherewerepreparedandtheirmagneticresponsibilitywerestudiedbymagneticbalance.Resultsindicatethatthemagneticresponsibilityofmicrosphererelatestomagneticmomentofrareearthion,anditcanbeimprovedbytheadditionofdysprosiumionofhighmagneticmoment.Dysprosiumcontenthasaneffectonmagneticresponsibilityofdysprosiumferrite/polyacrylamidemagneticmicrosphere.ThemicrospheredisplaysstrongmagneticresponsibilitywhenthemolarratioofDy3+/ironis0.20.

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简介：合成电影被阳极化联合和稀土元素免职在A356铝合金上制作。在3.5%NaCl答案的合成电影的腐蚀保护效果和腐蚀行为被电气化学的阻抗光谱学(EIS)学习。SEM观察显示稀土元素Ce电影完全封上阳极的电影的多孔的结构，并且合成电影阳极的电影创作了，Ce电影紧缩、综合。根据EIS的特征，在不同沉浸时间的合成电影的EIS阴谋用Rsol(QceRce)(QaRa)的相等的电路被模仿，Rsol(QceRce)(QpRp)(QbRb)和Rsol(QpRp)(QbRb)分别地当模特儿。测试结果证明在合成电影的外部层的Ce电影在沉浸腐蚀的起始的阶段有好保护效果。阻止氯化物熨斗渗透铝合金矩阵有效地在内部层帮助了阳极的电影。在18天以后，Ce电影失去了它的防腐蚀的性质，并且阳极的电影带头了腐蚀保护的角色。当腐蚀时间直到42天时，铝矩阵还没被侵蚀。因此，为A356铝合金的合成电影的更高的保护度被归因于阳极的电影和稀土元素Ce电影的协同效果。

简介：ThestructureandintrinsicmagneticpropertiesofRFeM（M=VorTi）,type1:12,havebeenstudiedbymagneticmeasurementandX-raydiffraction.Theyarebody-centeredtetragonalThMn12structure.Thechangesofcrystallatticeconstantscoincidewiththatoftheirelementradii.Curietemperatureisdecidedmainlybytheexchangeinteractionsof3d-3dand3d-4fatompairs.Thedataobtainedbymean-fieldapproximationagreewellwithexperimentalvalues.ThemagneticmomentcouplinginthesecompoundsforLREisferromagnetic,andforHREisantiferromagnetic.Atlowtemperature,anisotropyfieldisdecidedbyREsublattice.Inthispaper,theinfluenceofmagneticpropertiesofcobaltandnickelreplacingironhasalsobeenstudied.

简介：ThermalsimulationtestswereconductedatdifferentdeformationtemperaturesanddegreesbyaGleeblesimulator.Theresultsshowthatthealloyhashigherresistancetodeformation;withanincreaseofthedeformationtemperature,thealloy'sflowstressandmaximumvaluedecrease;withanincreaseofthedeformationdegree,boththeinitialrecrystallizationtemperatureandthecompleterecrystallizationtemperaturedecreasesharply.Whenthedeformationdegreereaches30%,60%and80%,theinitialrecrystalliza...

简介：ToevaluatethepossibilityofusingGd-Si-Gealloysinmagneticrefrigerators,samplesofGd-Si-GealloysweremadeofdomesticGd.Themagnetocaloriceffectofsampleswasestimatedbymagneticentropychange(-ΔSm)calculatedfromM-HcurvesaccordingtoMaxwellrelation.ThefirstorderphasetransformationwasdestroyedduetotheimpuritiesinthecommercialGd,sothatnogiantmagnetocaloriceffectwasfound.ThesamplesmadeofpurifiedGdexhibitfirstorderphasetransformation,andthe-ΔSmisbasicallyconsistentwiththepublisheddataofAmeslaboratory,USA.ThisworkprovesthatGd-Si-GealloysmadeofdomesticGdcanbeutilizedinmagneticrefrigerators.

简介：Thisstudysummarizessomeseriousdisharmoniousproblemsthatubiquitouslyexistinthecastingresiduerecyclingofsteelplants,suchaslargelandoccupation,lowoperationalefficiency,hiddenhazards,hugeresourceandenergyconsumption,seriousenvironmentalpollutionandsoon.Itanalyzesthenecessityoftheon-lineinnovationandrecyclingbasedonthepresentsituationofBaosteel.ItstatestheinnovationofthenewgridtechnologyandtheachievementsofitsintegratedapplicationatBaosteel.ItalsosummarizesandelaboratessomegreentechnologyfeaturesofthetreatmentandtheutilizationoftheBaosteelcastingresidueandthenewgridtechnology,suchassafety,energy-savingandenvironmentalprotection.Inaddition,itlaysouttheprospectsforthedevelopmentandapplicationofthetechnology.