简介：当前汽车市场的竞争愈演愈烈,消费者在选择产品时不仅限于一个合适的价格,而且更加注重汽车的质量和品质。冲压是汽车四大工艺之首,冲压件的质量问题不仅影响车身美观,还会降低制件的抗腐蚀性和产品使用寿命,因此对冲压件的质量缺陷控制至关重要。

简介：0前言在电镀生产中,除了镀液中常规成分组合、使用不当或工艺条件、范围操作失误外,人们常将那些影响镀液性能及镀层质量的因素称为＂杂质影响＂。镀液中的杂质有两种：一种是无机杂质,另一种是有机杂质。所谓无机杂质,是指除主盐离子以外的异金属离子。电镀溶液的维护与保养是很重要的,尤其是镀液杂质的影响,杂质的来源非常复杂,出了故障要慎重考虑故障原因,加强检查和分析后,才能采取相应措施,决不可盲目处理,否则会走弯路。

简介：在多年实际检验工作的基础上,对液化石油气储罐中的典型缺陷进行了归纳介绍,对储罐中典型缺陷的性质与成因进行了分析,指出液化石油气储罐中的缺陷主要以裂纹、鼓包和腐蚀为主。详细介绍了这三种主要缺陷的常见形态、易发位置和缺陷性质。同时指出民用液化石油气中湿H2S的存在是造成缺陷的主要原因。另外,对实际检验工作中针对不同缺陷应采取的检验方法、检验周期及缺陷处理方法进行了探讨,并提出了预防缺陷形成的具体措施。

简介：大型封头锻件在制造期间会不可避免地出现变形问题。且封头的设计尺寸越大，其制造难度就越大。变形问题也就越发突出。本文根据实际生产经验，分析了这些问题产生的原因，并提出了相应的预防措施和解决方法。

简介：介绍了冷冲压模具工作过程中常见的故障，分析了造成故障的内在原因，探讨减少和避免各类问题的工艺方法。该文对生产实践中同类问题的解决具有一定的借鉴作用

简介：某民航班机在飞行途中座舱内发现冒烟及微弱闪光，地面检查发现P6板后部有一电缆有燃烧痕迹。通过对受损导线的检查分析，结果表明，两根导线之间产生强烈电弧是引起飞机空中电缆起火的原因。而导致这两根导线之间产生电弧的直接原因则是导线在固定卡子部位出现了严重挤压和磨损。

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简介：[篇名]SignificantincreaseinmachinepartdurabilityandlongevityduetothenewpatentedLincarb,LinterprocessandLinheattechnologies，[篇名]Lasersurfacetreatmentofsteels，[篇名]ForecastingofthePhaseTransformationHardenedZoneandGorrelationInfluenceFactorsintheSurfaceHeatTreatmentbyPlasma，[篇名]Fatigueandfracturebehaviorofalasersurfaceheattreatedmartensitichigh-nitrogentoolsteel，[篇名]Theoreticalmodelsofsurfaceheattreatmentofproductsinsolarfurnaces-1:uniformradiant-energyflux。

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简介：CorrelationbetweentheflnorescentmaterialsproducedbyendosymbioticpseudomonasfluorcscensFPT-9601andmicrobialcontrolofsoil-bornebacterialdiseaseusingthisstrain；CORROSIONOFALUMINUMALLOY2024BYJETFUELDEGRADINGMICROORGANISMS；Developmentandtestingofnewvolatilecorrosioninhibitorsfornultimetalsystems；Developmentofdiscbrakerotorsforheavy-andmedium-dutytrackswithhighthermalfatiguestrength；DimethylSulfideRemovalfromSyntheticWasteGasUsingaFlatPoly(dimethylsiloxane)-CoatedCompositeMembraneBioreactor。

简介：AStudyofMicrobiologicallyInducedCorrosionbySRBonCarbonSteelusingHydrogenPermeation,Alloying,DeoxidizingandInoculatingCastAlloyswithPressedPowderPseudo-MasterAlloys,Anaerobicdigestionforreductionandstabilizationoforganicsolidwasteduringspacemissions:Systemsanalysis,Anaerobicdigestionforreductionandstabilizationoforganicsolidwastesduringspacemissions:Laboratorystudies,AssessmentofmicrobialcommunityvariabilityinreplicatetubularnitrifyingbioreactorsusingPCRandTRFLPanalysis.

简介：Dampingahybridsteppingmotorwithestimatedpositionandvelocity,Gridcurrentregulationofathree-phasevoltagesourceinverterwithanLCLinputfilter,TorsionalinteractionstudiesonpowersystemcompensatedbySSSCandfixedcapacitor,Amultivariablenewcontrolsolutionforincreasedlonglinesvoltagerestorationstabilityduringblackstartup,

简介：[篇名]Magneto-OpticalStudiesoftheCriticalStatesinc-axisOrientedMgB{sub}2ThinFilmandBulkMgB{sub}2/MgNano-Composites，[篇名]TheSoreteffectonconvectioninahorizontalporousdomainundercrosstemperatureandconcentrationgradients，[篇名]Improvingtheanti-seizureabilityofSiCsealinwaterwithRIEtexturing，[篇名]Coppernanoparticleswithinamorphousandcrystallinedielectricmatrices，[篇名]In-linelaserDopplervelocimeterusingfibre-opticBragggratinginterferometricfilters，[篇名]PreparationofaUV-attenuatingagentusingamechanochemicalreaction，[篇名]DesignofanAdaptiveObserverforSensorlessVectorControlofInductionMachinesunderRegeneratingConditions，[篇名]ConflictovernaturalresourcesamongpastoralistsinnorthernKenya:alookatrecentinitiativesinconflictresolution，[篇名]Releasingnitrogenfromammoniatedligninbywhiterotfunguscometabolizesenvironmentalpollutants，[篇名]Onanalogyanddissimilarityofdependenceofstabilityonseveralparametersinflowsimulations，[篇名]Ontheexponentialstabilityofaclassofnonlinearsystemsincludingdelayedperturbations，[篇名]6-indiameterInPsinglecrystalsgrownbythehot-wall，[篇名]Swing-upControlofaTranslationalInvertedPendulumHavingRestrictedTravel，[篇名]RobustPIDRate-BasedControlforPropagationDelayVariation，[篇名]Apracticalapproachforthedesignofmultivariablecontrolsystems，[篇名]Fibersensordetectslithium。

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简介：[篇名]Doublethermochemicaltreatmentintoolmanufacturingfromstructuralsteel，[篇名]Lifetimepredictionofhelicoptergears:experimentalinvestigationsandcomputermodelling，[篇名]Fluidizedbedapparatusesforthermaltreatmentandclassificationofdispersematerials，[篇名]Experimentalrigofthermochemicaltreatmentscraptires，[篇名]Thermochemicaltreatmentofsteel20khuponcyclictemperaturechanges。

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简介：[篇名]Relationsbetweenfracturetoughness,hardnessandmicrostructureofvacuumheat-treatedhigh-speedsteel，[篇名]Flexiblefurnaceconceptsforvacuumheattreatmentusinghigh-pressuregasquenching，[篇名]Effectofboronmicro-alloyingonmicrostructureandmechanicalpropertiesoffine-grainedCM247LCsuperalloy，[篇名]PROPERTIESOFPOLYCRYSTALSSINTEREDATHIGHPRESSURESFROMDIAMONDNANOPOWDERSPRODUCEDBYDETONATIONANDSTATICSYNTHESES，[篇名]TheEffectsofSteelQuality,VacuumHeatTreatmentQuenchRateandCharpyV-NotchImpactTestTemperatureontheImpactToughnessandMicrostructureofPremiumQualityH-13ToolSteel。

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