资源描述：
《外文翻译--浅谈油管液压管路系统设计.docx》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、附录英文原文TalkingAboutTheDesignofHydraulicConductorsEricSandgrenThispaperisaccountforuncertaintyMechanicalEngineering,UniversityofCalifornia,SanFrancisco,avialon503WestMainStreet,P.O.Box9625311.1INTRODUCTIONInahydraulicsystem,thefluidflowsthroughadistributionsystemconsistingofconductor
2、sandfittings,whichcarrythefluidfromthereservoirthroughoperatingcomponentsandbacktothereservoir.Sincepoweristransmittedthroughoutthesystembymeansoftheseconductinglines(conductorsandfittingsusedtoconnectsystemcomponents),itfollowsthattheymustbeproperlydesignedinorderforthetotalsystem
3、tofunctionproperly.Thechoiceofwhichtypeofconductortousedependsprimarilyonthesystem'soperatingpressuresandflowrates.Inaddition,theselectiondependsonen vironmentalconditionssuchasthetypeoffluid,operatingtemperatures,vibration,andwhetherornotthereisrelativemotionbetweenconnectedcompon
4、ents・Conductinglinesareavailableforhandlingworkpressuresupto10,000Paorgreater.Ingeneral,steeltubingprovidesgreaterplumbingflexibilityandneaterappearanceandrequiresfewerfittingsthanpiping.However,pipingislessexpensivethansteeltubing・Plastictubingisfindingincreasedindustrialusagebeca
5、useitisnotcostlyandcircuitscanbeveryeasilyhookedupduetoitsflexibility.Flexiblehosesareusedprimarilytoconnectcomponentsthatexperiencerelativemotion.Theyaremadefromalargenumberofelastomeric(rubberlike)compoundsandarecapableofhandlingpressuresexceeding10,000Pa.Stainlesssteelconductors
6、andfittingsareusedifextremelycorrosiveenvi ronmentsareexpected.However,theyareveryexpensiveandshouldbeusedonlyifnecessary.Copperconductorsshouldnotbeusedinhydraulicsystemsbecausethecopperpromotestheoxidationofpetroleumoils.Zinc,magnesium,andcadmiumconductorsshouldnotbeusedeitherbec
7、ausetheyarerapidlycorrodedbywater-glycolfluids.Galvanizedconductorsshouldalsobeavoidedbecausethegal vanizedsurfacehasatendencytoflakeoffintothehydraulicfluid.Whenusingsteelpipeorsteeltubing,hydraulicfittingsshouldbemadeofsteelexceptforinlet,return,anddrainlines,wheremalleableironma
8、ybeused・Conductorsandfitti
