学科分类
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16 个结果
  • 简介:WashDryIron能把脏衣服洗净并熨烫整齐。还能将衣服整齐挂好。而且非常节能。它具有一个巨大的清洁剂容器。用不着总往里面加洗衣粉。

  • 标签: 洗衣机 清洁剂 洗衣粉 衣服 容器
  • 简介:没有惰性的空气并且在房间温度的使用,磁性的氧化铁nanoparticles被标准合成过程的合适的修正综合。灵巧的合成过程能容易被扩大规模并且具有从为磁性的氧化铁nanoparticles的商业大规模生产的工业观点重要。综合nanoparticles被散布的热、动态光描绘,扫描电子显微镜学和传播电子显微镜学分析。

  • 标签: 磁性氧化铁 简便合成 铁纳米粒子 透射电子显微镜分析 扫描电子显微镜 表征
  • 简介:Thenumericalsimulationcanovercomethehardshipofmathematicalanalysisandexperimentalresearch,explicatethemechanismofmicrostructureshaping,predictmechanicalpropertiesandoperatinglifeofcastingsandthenoptimizetechnologyandcontrolmicrostructureformationtoobtainthequalifiedcastings.Thefinitedifferencemethod(FDM)isappliedtothesimulationoftemperaturefieldbasedonallkindsofnucleationandgrowthmodelsonallstagesofsolidificationofspheroidalgraphitecastiron.VisualC++isusedtoprogramthenumericalsimulationsoftware,QTstructure-1tosimulatethesolidificationprocessofspheroidalgraphitecastironandtheformationofallphasesinsolidificationprocess.Finally,theresultofsimulationiswellagreedwiththeexperimentalresult.

  • 标签: SPHEROIDAL GRAPHITE iron NUMERICAL simulation Finite
  • 简介:以便区分充满的效果和暴烈的活动并且探索激发富有硅的铁矿石跟踪的活动(IOT)的方法,惰性的石英作为修正被引进标准,上好的影响,锻烧,热治好系统和一些另外的因素被红外调查,XRD,MIP,等等显微镜的方法。磨擦的试验性的结果表演和锻烧罐头仅仅改变SiO2,的非结晶的状态,IOT不在在房间温度下面治好的水泥举办暴烈的活动状况。热治好系统能刺激IOT的活动,特别压热器治好治好的臼系统能消费大量Ca(哦)2和难钙硅酸盐并且有更靠近的结构。当IOT粉末的特定的表面区域是800m2/kg,,30%水泥被IOT代替时,搽粉,有IOT的臼力量粉末比那甚至高与cementonly。

  • 标签: 暴烈的活动 跟踪的富有硅的铁矿石 激发 热治好系统
  • 简介:Reducingthechloridecontentinregeneratedironoxides(RIO)fromsteel-picklingacidwasteeconomicallytreatedbyRuthnerprocessisthemostcriticalissueforthedevelopmentofRIOasausefulrawmaterialresource.Inthispaper,theresultsofanewmethodforcharacterizationandmodificationofRIOproducedinMobarakehSteelComplexwerereported.

  • 标签: 铁氧化物 氯化物 酸洗技术 盐酸
  • 简介:由使用焊接电线的镍,焊接弧的以铁酸盐为主要成的可锻的铁的部分熔化地区(PFZ)和焊接金属的机械性质的寒心的趋势上的alloying的效果系统地被学习了。在这个基础上,为以铁酸盐为主要成的可锻的铁(QT400-17)的弧焊的一个新镍电极第一次被开发。它的焊接金属的机械性质能以铁酸盐为主要成的可锻的铁匹配那些。在PFZ的碳化物层(WCL)的宽度显著地被减少,焊接关节有优秀马赫无能,焊接金属有高热的抗碎裂性。(编辑作者摘要)3个裁判员。

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  • 简介:Aporosity-freeandcontamination-freesurfacelayerwithgrainsizesrangingfromnanometertomicrometerinFesampleswasobtainedbysurfacemechanicalattritiontreatment(SMAT)technique.MechanicalandwearpropertiesofthesurfacelayerintheSMATedandannealedFesamplesweremeasuredbymeansofnanoindentationandnanoscratchtests,respectively.ExperimentalresultsshowedthatthehardnessofthesurfacelayerintheSMATedFesampleincreasedevidentlyduetothegrainrefinement.TheelasticnoduliofthesurfacelayersintheSMATedandannealedFesampleswereunchanged,independentofgrainsizeinthepresentgrainsizeregime.ComparedwiththeoriginalFesample,thewearresistanceenhancedandthecoefficientoffrictiondecreasedinthesurfacelayeroftheSMATedFesample.

  • 标签: 机械性能 耐磨损性能 纳米晶体材料
  • 简介:Dryseparationofironmineralfromlow-gradecoal-serieskaolininHubeiProvinceofChinawasinvestigated.ThestructureandchemicalcompositionofthekaolinoreweredeterminedbyX-raydiffraction(XRD)andX-rayFluorescence(XRF)analyses.Thenarrowparticlesizerangeclassification,drymagneticseparationandcalcinationwerecarriedouttoevaluatetheparticlesizedistribution,andtherelationbetweenthecontentofironandthewhiteness.Experimentalresultsrevealedthatthehighestcontentofiron(3.70%)inkaolinorewasintheparticlesizerangefrom60to74μm,andpyritewasthemainoccurrenceofironinthekaolinore.Drymagneticseparationshowedthattheremovalrateofironinkaolinorecouldbeincreasedobviouslyaftercalcination,andtherateofironremovalwas60%intheparticlesizerangefrom60to74μm.Aspyritecanbetransformedintohematitethroughcalcination,thermodynamicstudiesandXRDanalysisshowedthatthemaximumcontentofhematitewasobtainedat900℃,whichwouldbemorebeneficialtomagneticseparation.

  • 标签: coal-series KAOLIN CALCINATION dry-magnetic SEPARATION
  • 简介:Theinternalstressinducedbyaporouslayerorpassivelayercanassisttheappliedstresstopromotedislocationemissionandcrackpropagation,e.g.whenthepipelinesteelisburiedinthesoilcontainingwater,resultinginstresscorrosioncracking(SCC).Moleculardynamics(MD)simulationisperformedtostudytheprocessofdislocationemissionandcrackpropagationinaslabofFecrystalwithandwithoutaporouslayeronthesurfaceofthecrack.Theresultsshowthatwhenthereisaporouslayeronthesurfaceofthecrack,thetensilestressinducedbytheporouslayercansuperimposeontheexternalappliedstressandthenassisttheappliedstresstoinitiatecracktipdislocationemissionunderloweredstressintensityKI,orstress.Torespondtothecorrosionaccelerateddislocationemissionandmotion,thecrackbeginstopropagateunderloweredstressintensityKI,resultinginSCC.

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  • 简介:Toobtainthecompatiblematerialofhighhardnessandhightoughness,Hadfieldsteelmatrixcomposites,reinforcedbyhigh-Crcastironbarsmadeofflux-coredweldingwires,whichwereinsertedintotheHadfieldsteelmelt,wereinvestigated.Themechanicalpropertiesofthreematerials,ie,compositesforas-castandquenching-watercondition,aswellasHadfieldsteel,werecompared.Theresultsshowthatthealloypowderinsideflux-coredweldingwirescanbemeltedbytheheatcapacityofHadfieldsteelmeltandsolidifyintohigh-Crcastironbars.Theimpacttoughnessofthecompositeforquenching-waterconditionishigherthanthatofthecompositeforas-castconditionandislowerthanthatoftheHadfieldsteel,butitcanstillmeettherequirementsofhardnessandtoughnessinindustrialapplication.Regardlessofloadvariation,compositeforquenching-waterconditionshowsbetterwearresistancethanthoseofthecompositeforas-castconditionandHadfieldsteel.ThemodifiedfracturetoughnessandwearresistanceofcompositesareattributedtonotonlythecombiningactionsofHadfieldsteelmatrixandhigh-Crcastironbars,butalsotheeffectofheattreatment.

  • 标签: 钢基复合材料 高铬铸铁 力学性能 微观结构 药芯焊丝
  • 简介:Theindustrialmanufactureprocessesofthreekindsofrollcoreusedductileironshavebeeninvestigatedviasystematicalexperiments.EffectsoftheratioofC/Si,pigiron,nodularizerandalloyingmethodonthemicrostructureandmechanicalpropertiesoftheheavysectionductileironhavebeenanalyzed.IthasbeenfoundthatwhentreatedwithRE-MgplusSb,highqualitynodularcastingscanbeproducedevenifmuchantispheroidizingalloyelementsareincludedinthepigiron.ThealloyelementSbplayedanimportantroleinthecontrolofgraphitemorphology.

  • 标签: 球墨铸铁 力学性能 显微组织 化学成分 复合轧辊 离心铸造