2023年全國碩士研究生考試考研英語一試題真題(含答案詳解+作文范文)_第1頁
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1、Designation:A1023A1023M?15StardSpecificationfStredCarbonSteelWireRopesfGeneralPurposes1ThisstardisissuedunderthefixeddesignationA1023A1023Mthenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptioninthec

2、aseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1Thisspecificationcoversthegeneralrequirementsfthemec

3、ommontypesofstredsteelwireropes.Includedinthisspecificationarewireropesinvariousgradesconstructionsfrom1?4in.[6mm]to23?8in.[60mm]manufacturedfromuncoatedmetalliccoatedwire.Alsoincludedarecdproductsfrom1?32in.[0.8mm]to3?8

4、in.[10mm]manufacturedfrommetalliccoatedwire.Fspecificapplicationsadditionalalternativerequirementsmayapply.1.2ThevaluesstatedineitherinchpoundsSIunitsaretoberegardedseparatelyasstard.WithinthetexttheSIunitsareshowninbrac

5、kets.Thevaluesstatedineachsystemarenotexactequivalentstherefeeachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconfmancewiththespecification.2.ReferencedDocuments2.1ASTMStards:2A9

6、31TestMethodfTensionTestingofWireRopesStrA1007SpecificationfCarbonSteelWirefWireRope2.2ISOStards:3ISO2232RoundDrawnWirefGeneralPurposeNonalloySteelWireRopesISO3108SteelWireRopesfGeneralPurposes—DeterminationofActualBreak

7、ing3.TerminologyDeionofTermsSpecifictothisSpecification3.1sn—fibersolidpolymersopositionedastoseparateadjacentstrswiresinthesameoverlyinglayerstofillintersticesoftherope.3.2Lubrication:3.2.1impregnatingcompoundn—material

8、usedinthemanufactureofnaturalfibercescoverssfthepurposeofprovidingprotectionagainstrottingdecayofthefibermaterial.3.2.2preservationcompoundn—materialusuallycontainingsomefmofblockingagentappliedduringafterbothduringafter

9、manufactureoftheropetofibersfillerscoveringsfthepurposeofprovidingprotectionagainstcrosion.3.2.3ropelubricantn—generaltermusedtosignifymaterialappliedduringthemanufactureofastrceropefthepurposeofreducinginternalfrictionp

10、rovidingprotectionagainstcrosionboth.3.3ropecesn—centralelementusuallyoffibersteel(butmaybeacombinationofboth)ofaroundropearoundwhicharelaidhelicallythestrsofastredropetheunitropesofacablelaidrope(Fig.1).3.3.1fiberce(FC)

11、n—anelementmadefromeithernaturalsyntheticfibers.3.3.2solidpolymercen—asingleelementofsolidpolymermaterialthatiseithercylindricalshaped(grooved).Itmayalsoincludeanelementelementsofwirefiber.3.3.3steelcen—astredrope(IWRC)a

12、roundstr(WSC)construction.Theroundstrthestredropeceitsouterstrsbothmayalsobecoveredfilledwitheitherfibersolidpolymer.Steelcesarenmallymadeasaseparateindependentelementtheexceptionbeingropewithastredropececlosedparallelwi

13、ththeouterstrs.3.4strn—anelementofropenmallyconsistingofanassemblyofwiresofappropriateshapedimensionslaidhelicallyinonemelayersaroundacenter.Thecentermayconsistofoneroundshapedwireofseveralroundwiresfmingabuiltupcenterof

14、fibersomeothermaterial.Ifmultiplewiresareusedinastrcentertheymaybecountedasonewire.3.4.1CrossSectionShape:3.4.1.1compactedstrn—astrthathasbeensubjectedtoacompactingprocesssuchasdrawingrollingswaging(Fig.2).1Thisspecifica

15、tionisunderthejurisdictionofASTMCommitteeA01onSteelStainlessSteelRelatedAlloysisthedirectresponsibilityofSubcommitteeA01.03onSteelRodWire.CurrenteditionapprovedMay12015.PublishedJune2015.iginallyapprovedin2002.Lastprevio

16、useditionapprovedin2009asA1023A1023M–09ε2.DOI:10.1520A1023_A1023M15.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypa

17、geontheASTMwebsite.3AvailablefromInternationalganizationfStardization(ISO)1ruedeVarembCasepostale56CH1211Geneva20Switzerl:www.iso.ch.Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedS

18、tates13.6.4.1centerwiresn—wirespositionedatthecenterofastrofastredrope.3.6.4.2cewiresn—allwirescomprisingtheceofastredrope.3.6.4.3innerwiresn—allwiresexceptcenterfillerceouterwiresinastredrope.3.6.4.4outerwiresn—allwires

19、intheouterlayeroftheouterstrsofastredrope.Dimensionalacteristics3.7DiameterofRope:3.7.1diameterofplasticcoatedropen—thediameterthatcircumscribestheoverallropecrosssectionincludingthecoverfollowedbythediameterwhichcircums

20、cribestheunderlyingrope(fexample3?45?8in.).3.7.2diameterofroundropen—thediameter(d)thatcircumscribestheropecrosssection.Diameterisexpressedininchesmillimeters(Fig.8).3.8LayLength:3.8.1ropelaylengthn—thatdistancemeasuredp

21、aralleltothelongitudinalropeaxisinwhichtheouterstrsofastredropethecomponentropesofacablelaidropemakeonecompleteturn(helix)abouttheaxisoftherope(Fig.9).3.8.2strlaylengthn—thatdistancemeasuredparalleltothelongitudinalstrax

22、isinwhichthewireinthestrmakesonecompleteturn(helix)abouttheaxisofthestr.Thelaylengthofastristhatcrespondingtotheouterlayersofwires(Fig.9).Manufacture(Rope)3.9Prefmation:3.9.1nonprefmedropen—ropeinwhichthewiresstrsinthero

23、pewillafterremovalofanyseizing(serving)springoutoftheropefmation.3.9.2prefmedropen—ropeinwhichthewiresstrsintheropewillnotafterremovalofanyseizing(serving)springoutoftheropefmation.3.10prestretchingn—thenamegiventoaproce

24、ssthatresultsintheremovalofalimitedamountofconstructionalstretch.MechanicalProperties3.11Rope:3.11.1actual(measured)breakingfcen—breakingfceobtainedusingtheprescribedtestmethodinTestMethodA931ISO3108.3.11.2calculatedbrea

25、kingfcen—valueofbreakingfceobtainedfromthesumofthemeasuredbreakingfcesofthewiresintheropebeferopemakingmultipliedbythemeasuredspinninglossfactasdeterminedbytheropemanufacturer’sdesign.FIG.2CompactedRoundStr—BefeAfterFIG.

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