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335 个结果
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  • 简介:  阅读如登楼.登高才能望远,望远才能直吐胸臆.阅读者需要阶梯,那么,写作者在写作的过程中就要为读者搭建这个阶梯.登楼是一步一步的,这个阶梯不可以太高,也不可以太矮.太高,攀登难道,会给阅读者造成阅读的疲惫;太矮,要倒小步,会破坏阅读者对目的地--即结尾的期望值.……

  • 标签: 阶梯搭建
  • 简介:Acomparativestudyofnewmagnesiumalloysdevelopedforelevatedtemperatureapplicationsinautomotiveindustry,Adevelopmentofvirtualprototypingmanufacturingsystemforhighpressurediecastingprocesses,Afinishmachiningstrategyforrapidmanufacturedpartsandtools,Anewmanufacturingtechnologyforinductionmachinecopperrotors,AStudyonPerformanceEvaluationandImprovementofSteeringWheelwithMgDieCastingCore,AstudyonprocessesandmechanicalpropertiesofdiecastA.380V6engineblocks.

  • 标签: 压力铸造 加工工艺 镁合金 自动监测
  • 简介:FabricationandMechanicalPropertiesofCu-basedBulkAmorphousAlloys,InvestigationofAl-Sicompositionsforthinfilmapplications,Resinstobecheerful,Vacuumcastingwithroomtemperaturevulcanizingrubberandaluminiummouldsforrapidmanufacturingofqualityparts:acomparativestudy.

  • 标签: 真空铸造 铜合金 力学性质 铝硅复合材料 室温条件
  • 简介:HardnessandyieldstrengthincastMg-Alalloys;HEALTHANDSAFETYASPECTSOFINVESTMENTCASTINGWAXES;Highaluminacementsasbindersforinvestmentcastingshells;IIncreaseinCalculationSpeedofRadiativeHeatTransferinPrecisionCastingFurnacesofGas-TurbineBlades;ImprovedCastingProcessforLargeSingleCrystalGasTurbineComponents;IncreasetnCalculationSpeedofRadiativeHeatTransferinPrecisionCastingFurnacesofGasTurbineBlade

  • 标签: 精密铸造 镁铝合金 热转换 机械性质
  • 简介:Diespray,diecostanddielife;DIE-CASTCOPPERROTORSFORIMPROVEDMOTORPERFORMANCE;DiecastabilityofMg-AI-SrHighTemperatureCreepResistanceAlloysBasedonLaboratoryEvaluations&ComponentDieCastingTrials;Diesandtoolsforhighperformanceapplications;EarlyResidualStressDevelopmentInAluminumDieCastingDies

  • 标签: 压力铸造 机械性质 铝合金 循环工艺
  • 简介:3DTHERMOMECHANICALSIMULATIONOFTHESECONDARYCOOLINGZONEOFSTEELCONTINUOUSCASTING,4thEuropeanconferenceoncontinuouscasting,Anewprocessofdirectenamelingonvarioussteelgradescoatedwithspecialelectro-depositednickel,Anapproximationmodelofcontactstatebetweenrollandstrand-computationofthree-dimensionaldeformationbehaviorofcontinuouslycaststeelstrandinmultirollspansI,Anelectricdriveforthewithdrawalrollersofacontinuous-castingmachine,Aninvestigationofslagfloatationandentrapmentinacontinuous-castingtundishusingfluid-flowsimulations,samplingandphysicalmetallurgy.

  • 标签: 连续铸造 处理工艺 钢材 近似模型
  • 简介:DentalcastingpropertiesofTi-15Zr-4Nb-4Taalloy;DETERMINATIONOFINTERFACIALHEATTRANSFERCOEFFICIENTSININVESTMENTCASTING;DETERMININGWAXPATFERNDIMENSIONSININVESTMENTCASTINGUSINGVISCOELASTICMODELS;DevelopmentofacheepcreepresistantMg-Al-Zn-Si-basealloy;Dynamicprocessesduringpouringofshellmoldsininvestmentcasting。

  • 标签: 精密铸造 蠕变阻抗 力学处理 外壳空模 锌-硅基合金
  • 简介:Preparationofthehoneycombpatternedporousfilmofbiodegradablepolymerfortissueengineeringscaffolds;Productionofoutlooksforprecisioncostingdevelopment;ProductionofTantalumPowderbyMagnesiothermicReductionofFeedPreform;REACTIONSYNFIIESISOFREFRACTORYMETAL-CERAMICCOMPOSITES;Researchonthehighperformancesiliconcarbideceramicsandsiliconcarbidebasedcomposites。

  • 标签: 蜂窝模式 铸造工艺 多孔渗水薄膜 生物降解聚合物