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1.
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   

2.
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   

3.
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   

4.
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   

5.
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   

6.
陈国清  骆际焕 《特殊钢》1994,15(4):23-25
棒料液压折断机陈国清,骆际焕,邱文婷(华中理工大学机二系)HydraulicFractureRodMachine¥ChenGuoqing;LuoJihuanandQiuWenting(HuazhongUniversityofScience&Techn...  相似文献   

7.
Withthetechnicalprogressofmetallurgicalin dustry ,moreexcessgaswillbeproducedinsteelworks .Table 1listedthetypicalcompositionofex cessgasinansteelworks .Itcanbeseenthatcoke ovengasmainlyconsistsofhydrogenandmethane ,whileconverter gascontainsmuchmorecarbonm…  相似文献   

8.
Ceramicmaterialshavebeenusedasen gineeringmaterialsbecauseoftheirhighstrengthandhighhardness .Thedisadvantageofsuchceramicsisthedifficultyinmachiningaftersintering ,whichleadstohighmachiningcost.Todecreaseit ,variousceramicswithreasonablemachinability ,ca…  相似文献   

9.
RareearthinorganiccompoundshavebeenwidelyusedasmicroelementfertilizerinagricultureinChina .ItwasdiscoveredthatcropsproductioncouldbeincreasedbyusingRE .Themechanismoftheincreaseofproduc tionattcactedincreasinglycloseattention .Pre viousstudiesshowedthatR…  相似文献   

10.
Asoneoftheexternalparameterswhichaffectthematerialproperties ,theeffectofmagneticfieldonatomshasbeenstudiedandappliedinmanyareasandmakesmuchprogressinmanysubjects ,suchassolidphysics ,surfacephysics ,andplasmaphysics .ThematuretechnologyMCZinsemiconductor…  相似文献   

11.
TheLaNi5 basedhydrogenstoragealloysarepromisingnegativeelectrodematerialsforrechargeableNi/MHbatteriesbecausetheypossessahighcapacityandareeasytoacti vate .ButthedischargecapacityoftheLaNi5electrodedeclinesrapidlyduringcharge dis chargecycles (5 0 %ofthecapa…  相似文献   

12.
Heteropolycompoundisanewcatalystwithmanyfunctionsinchemistryindustry .Itsexcellentcatalyticperformanceisdeterminedbyitscompositionandstructure .Ithassimplecompositionandfixedstructure ,althoughitmayconsistofmanyelements .Itsstructureandpropertycanbechang…  相似文献   

13.
Theconceptofrationaldesignofmicro andmeso porousandotherfunctionalmaterialshasattractedmuchattentionbecauseofthepo tentialofthesematerialsinvariousapplicationssuchasmolecularmagnets ,nonlinearopticaldevices ,catalysts ,molecularsieves ,andsen sors[1~ 5 ] .Cyan…  相似文献   

14.
Rareearthcomplexisanimportantkindoflumi nescencematerials ,muchattentionhasbeenpaidtotheexcellentluminescencecharacteristicsbasedontheirelectrictransitionbetweenthe 4fenergylevels[1,2 ] .Inrecentyearsmanyrareearthcomplexesthatchelatedwithorganiccompounds ,s…  相似文献   

15.
hemostpopularmicrostructureincurrentstructuralsteelsisstillamixtureofferriteandpearlite .Microalloying (andtheassociatedthermo mechanicalprocess)andsecond phasestrengtheningareusuallyappliedtoobtainhighstrengthandtoughness.Sincethestructurestrengthofgran…  相似文献   

16.
Inrecentyears,researchonmagneto impedanceinmagneticmaterialsisattracting greatattentionfortechnicalapplicationsinrecordingheadsandsen sors .InnearlynonmagnetostrictiveCo basedamor phouswire ,theMIeffectisassociatedwiththecir cumferentialmagneticpermeabili…  相似文献   

17.
Therearealwayssomegeometricaldiscon tinuities ,suchasfastenerholes ,filletsandgraves ,inpracticalaircraftconstructioncom ponents .Intheviewofmaterialmechanics ,thesegeometricaldiscontinuitiescanbecon sideredasnotches .Stressconcentrationusual lyoccursatnotch…  相似文献   

18.
Ingeneral,hydroximicacids (RCON HOH)areweakorganicacids .ThisclassoforganiccompoundscontainingthereactivegroupCONHOH ,knownasthehydroximicacids,havebeenwidelystudiedbyorganicchemists.Thehydroximicacidsarechelateligandsformanymetals .Theyarewidelyusedaschel…  相似文献   

19.
Thepoormechanicalpropertiesofcastmaterials ,especiallylowtoughness ,isamainfactorlimitingtheapplicationofprecisecastdies[1] .ThroughthemodificationofcastH1 3steelbyRE ,thedendritesegregationofCH1 3steelwasimprovedandgrainboundarycarbidewasalsoundercontrol.Acc…  相似文献   

20.
REandtheiralloysarewidelyusedinmagnetic ,opticalandelectricmaterials ,andtheyarenowsubstantiallyproducedbycathodesputteringandvacuumplatingorionplating ,buttheircostsarehigh ,andtheirprocessesofproducingarecomplexandrequirespeciale quipmentscomparingwith…  相似文献   

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