共查询到20条相似文献,搜索用时 15 毫秒
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化纤打包机液压系统的保压回路张进寿(首钢液压机械厂研究所;邮编:102600)Thepressuremaintainingcircuitinapackingmachineforchemicalfibre¥ZhangJinshou(ResearchIn... 相似文献
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难燃液压液在冶金工业中的应用Applicationoffire-resistancehydraulicfluidsformetallurgicalindustry1前言随着现代冶金生产向高速、高温、高压、高安全、大容量和小型化方向的发展,液压设备无疑... 相似文献
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液压系统故障诊断技术综述高澜庆,张文明(北京科技大学;邮编:100083)Hydraulicsystemconditionmonitoringandfaultsdiagnosissurvey¥GaoLanqing;ZhangWenming(Unive... 相似文献
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YZ175液压抓斗的设计和改进张云冲(江苏治金机械厂;邮编:210007)DesignandimprovementoftheYZ175hydraulicgrabbucket¥ZhangYunchong(JiangsuMetallurglcalMach... 相似文献
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高水基120B的特点及应用Thefeatures&applicationsofsyntheticwateradditivel20B¥//鉴于能源危机、环境影响和综合经济效益的考虑,好富顿公司及其用户很久以前就开始寻求新型的液压液,并成功地研制出适合不... 相似文献
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Withthetechnicalprogressofmetallurgicalin dustry ,moreexcessgaswillbeproducedinsteelworks .Table 1listedthetypicalcompositionofex cessgasinansteelworks .Itcanbeseenthatcoke ovengasmainlyconsistsofhydrogenandmethane ,whileconverter gascontainsmuchmorecarbonm… 相似文献
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Preparation of MachinableY—TZP/LaPO4 Composite Ceramics byLiquid Precursor Infiltration 总被引:1,自引:0,他引:1
Ceramicmaterialshavebeenusedasen gineeringmaterialsbecauseoftheirhighstrengthandhighhardness .Thedisadvantageofsuchceramicsisthedifficultyinmachiningaftersintering ,whichleadstohighmachiningcost.Todecreaseit ,variousceramicswithreasonablemachinability ,ca… 相似文献
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RareearthinorganiccompoundshavebeenwidelyusedasmicroelementfertilizerinagricultureinChina .ItwasdiscoveredthatcropsproductioncouldbeincreasedbyusingRE .Themechanismoftheincreaseofproduc tionattcactedincreasinglycloseattention .Pre viousstudiesshowedthatR… 相似文献
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Asoneoftheexternalparameterswhichaffectthematerialproperties ,theeffectofmagneticfieldonatomshasbeenstudiedandappliedinmanyareasandmakesmuchprogressinmanysubjects ,suchassolidphysics ,surfacephysics ,andplasmaphysics .ThematuretechnologyMCZinsemiconductor… 相似文献
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TheLaNi5 basedhydrogenstoragealloysarepromisingnegativeelectrodematerialsforrechargeableNi/MHbatteriesbecausetheypossessahighcapacityandareeasytoacti vate .ButthedischargecapacityoftheLaNi5electrodedeclinesrapidlyduringcharge dis chargecycles (5 0 %ofthecapa… 相似文献
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Heteropolycompoundisanewcatalystwithmanyfunctionsinchemistryindustry .Itsexcellentcatalyticperformanceisdeterminedbyitscompositionandstructure .Ithassimplecompositionandfixedstructure ,althoughitmayconsistofmanyelements .Itsstructureandpropertycanbechang… 相似文献
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Theconceptofrationaldesignofmicro andmeso porousandotherfunctionalmaterialshasattractedmuchattentionbecauseofthepo tentialofthesematerialsinvariousapplicationssuchasmolecularmagnets ,nonlinearopticaldevices ,catalysts ,molecularsieves ,andsen sors[1~ 5 ] .Cyan… 相似文献
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Rareearthcomplexisanimportantkindoflumi nescencematerials ,muchattentionhasbeenpaidtotheexcellentluminescencecharacteristicsbasedontheirelectrictransitionbetweenthe 4fenergylevels[1,2 ] .Inrecentyearsmanyrareearthcomplexesthatchelatedwithorganiccompounds ,s… 相似文献
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New Duplex Microstructure of Grain Boundary Allotriomorphic Ferrite/Granular Bainite 总被引:5,自引:0,他引:5
XU Ping guang FANG Hong sheng BAI Bing zhe WANG Zhen jia YANG Zhi gang HUANG Jin feng 《钢铁研究学报(英文版)》2002,9(2):33-38
hemostpopularmicrostructureincurrentstructuralsteelsisstillamixtureofferriteandpearlite .Microalloying (andtheassociatedthermo mechanicalprocess)andsecond phasestrengtheningareusuallyappliedtoobtainhighstrengthandtoughness.Sincethestructurestrengthofgran… 相似文献
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Giant Magneto-Impedance Effect in Amorphous and Current Annealed Fe_(73.5)Cu_1Nb_3Si_( 13.5)B_9 Wire 总被引:1,自引:0,他引:1
Inrecentyears,researchonmagneto impedanceinmagneticmaterialsisattracting greatattentionfortechnicalapplicationsinrecordingheadsandsen sors .InnearlynonmagnetostrictiveCo basedamor phouswire ,theMIeffectisassociatedwiththecir cumferentialmagneticpermeabili… 相似文献
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Therearealwayssomegeometricaldiscon tinuities ,suchasfastenerholes ,filletsandgraves ,inpracticalaircraftconstructioncom ponents .Intheviewofmaterialmechanics ,thesegeometricaldiscontinuitiescanbecon sideredasnotches .Stressconcentrationusual lyoccursatnotch… 相似文献
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Ingeneral,hydroximicacids (RCON HOH)areweakorganicacids .ThisclassoforganiccompoundscontainingthereactivegroupCONHOH ,knownasthehydroximicacids,havebeenwidelystudiedbyorganicchemists.Thehydroximicacidsarechelateligandsformanymetals .Theyarewidelyusedaschel… 相似文献
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Thepoormechanicalpropertiesofcastmaterials ,especiallylowtoughness ,isamainfactorlimitingtheapplicationofprecisecastdies[1] .ThroughthemodificationofcastH1 3steelbyRE ,thedendritesegregationofCH1 3steelwasimprovedandgrainboundarycarbidewasalsoundercontrol.Acc… 相似文献
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REandtheiralloysarewidelyusedinmagnetic ,opticalandelectricmaterials ,andtheyarenowsubstantiallyproducedbycathodesputteringandvacuumplatingorionplating ,buttheircostsarehigh ,andtheirprocessesofproducingarecomplexandrequirespeciale quipmentscomparingwith… 相似文献