BS EN ISO 10484-1997 Widening test on nuts《螺母的扩孔试验》.pdf

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1、BRITISH STANDARD BS EN ISO 10484:2004 Incorporating Amendment No. 1 to BS ISO 10484:1997 (renumbers the BS ISO as BS EN ISO 10484: 2004) Widening test on nuts The European Standard EN ISO 10484:2004 has the status of a British Standard ICS 21.060.20 BS EN ISO 10484:2004 This British Standard, having

2、 been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1997 BSI 11 August 2004 ISBN 0 580 29446 3 National foreword This British Standard is the official English language version of EN ISO 1048

3、4:2004. The UK participation in its preparation was entrusted by Technical Committee FME/9, Bolts, nuts and accessories, to Subcommittee FME/9/1, Mechanical properties of materials, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request t

4、o its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electr

5、onic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to un

6、derstand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document compr

7、ises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, the ISO foreword page, pages 1 to 3, the Annex ZA page, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issu

8、ed. Amendments issued since publication Amd. No. Date Comments 15307 11 August 2004 Implementation of the European StandardEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO10484 July2004 ICS21.060.20 SupersedesEN493:1992 Englishversion Wideningtestonnuts(ISO10484:1997) Essaidvasementdescrous(ISO1

9、0484:1997) AufweitversuchanMuttern(ISO10484:1997) ThisEuropeanStandardwasapprovedbyCENon1July2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographical

10、referencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCent

11、ralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,S

12、pain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO10484:2004:EI

13、NESO 01:4842004 (E) 2 Foreword The text of ISO 10484:1997 has been prepared by Technical Committee ISO/TC 2 “Fasteners” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 10484:2004 by Technical Committee CEN/TC 185 “Threaded and non-threaded mechanical fas

14、teners and accessories“, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2005, and conflicting national standards shall be withdrawn at the latest

15、by January 2005. This document supersedes EN 493:1992. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, German

16、y, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 10484:1997 has been approved by CEN as EN ISO 10484:2004 without any modific

17、ations. NOTE Normative references to International Standards are listed in annex ZA (normative). ENISO10484:2004A Referencenumber ISO10484:1997 (E) INTERNATIONAL STANDARD ISO 10484 Firstedition 19971101 Wideningtestonnuts Essaidvasementdescrous ENISO10484:2004)E(7991:48401OSI OSI7991 Allirthgsserevr

18、.delnUesstoiwrehsescepifi,detraponfothislbupictainomayebcudorperde turoziliynanidefoybromrynasnaem,celetrcinocemrocinaha,lcnilgnidutohpcoypognidna .rehsilbupehtmorfgnitirwninoissimreptuohtiw,mliforcim noitazidradnatSrofnoitazinagrOlanoitanretnI 65elatsopesaC 02evneG1121HC dnalreztiwS tenretnI hc.osi

19、lartnec 004.X lartnec=s;scosi=o;osi=p;ten004=a;hc=c dnalreztiwSnidetnirP ii Foreword ISO(theInternationalOrganizationforStandardization)isaworldwide federationofnationalstandardsbodies(ISOmemberbodies).Theworkof preparingInternationalStandardsisnormallycarriedoutthroughISO technicalcommittees.Eachme

20、mberbodyinterestedinasubjectforwhich atechnicalcommitteehasbeenestablishedhastherighttoberepresented onthatcommittee.Internationalorganizations,governmentalandnon governmental,inliaisonwithISO,alsotakepartinthework.ISO collaboratescloselywiththeInternationalElectrotechnicalCommission (IEC)onallmatte

21、rsofelectrotechnicalstandardization. DraftInternationalStandardsadoptedbythetechnicalcommitteesare circulatedtothememberbodiesforvoting.PublicationasanInternational Standardrequiresapprovalbyatleast75%ofthememberbodiescasting avote. InternationalStandardISO10484waspreparedbyTechnicalCommittee ISO/TC

22、2,Fasteners,SubcommitteeSC 1, Mechanicalpropertiesof fasteners. ENISO10484:2004INTERNATIONALSTANDARD ISO ISO10484:1997(E) 1 Wideningtestonnuts 1Scope ThisInternationalStandardspecifiesthetestprocedureforevaluatingtheacceptabilityofsurface discontinuitiesdesignatedinISO61572excludingnutsmadeoffreecut

23、tingsteel. Itappliestonutswith propertyclassestoISO8982andISO8986; nominalthreaddiameter, d,from5mmuptoandincluding39mm; productgradesAandB. 2Normativereferences Thefollowingstandardscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthis InternationalStandard.Atthetimeofpublica

24、tion,theeditionsindicatedwerevalid.Allstandardsaresubject torevision,andpartiestoagreementsbasedonthisInternationalStandardareencouragedtoinvestigatethe possibilityofapplyingthemostrecenteditionsofthestandardsindicatedbelow.MembersofIECandISO maintainregistersofcurrentlyvalidInternationalStandards.

25、ISO8982:1992, MechanicalpropertiesoffastenersPart2:NutswithspecifiedproofloadvaluesCoarse thread. ISO8986:1994, MechanicalpropertiesoffastenersPart6:NutswithspecifiedproofloadvaluesFinepitch thread. ISO2320:1997, PrevailingtorquetypesteelhexagonnutsMechanicalandperformanceproperties . ISO61572:1995,

26、 FastenersSurfacediscontinuitiesPart2:Nuts . 3Wideningtest 3.1Principle Afterremovalofthethreaduptothenominalthreaddiameterataperedmandrelispushedintothenut. Thewideningismeasuredasapercentageoftheholediameter. 3.2Testmandrel Thetestmandrelshowninfigure1shallbeusedformeasurementofwideningof6%or4%res

27、pectively(see clause 4).Itshallhaveaminimumhardnessofnotlessthan45 HRCandtheconeshallbepolished (roughnessR a =2,5 mm). 3.3Testnut Thenuttobesubjectedtothewideningtestshallhavethethreadremovedtoadiameterequaltothenominal diameterofthethreadwiththetoleranceH12. ENISO10484:2004)E(7991:48401OSI OSI 2 3

28、.4Procedure Priortothetest,lubricatethemandrelwithmolybdenumdisulphide(MoS 2 ). Insertthemandrelintothenutasshowninfigure2andapplyaloadaxiallyinaslowandcontinuousmanner untilthemandrelispushedthroughtheholeuptothecylindricalpart.Themandrelshallbetightlyclampedat theupperend.Forreferencepurposesthesp

29、eedofinsertionshallnotexceed25mm/min. 4Criteria Thetotalwideningofnutsshallbe 6%fornutsofpropertyclasses4to12 and 4%fornutsofpropertyclasses04and05. Failureofanutoccurswhenthewallofthenutbreaksentirelybeforetheminimumspecifiedwideningvalue isobtained.Incasesofdoubt,thefracturemayberecognizedwhenthen

30、utiscutontheoppositesideand thenfallsintotwosingleparts. 5SpecialcasePrevailingtorquetypenuts ForprevailingtorquetypenutsaccordingtoISO2320theminimumvalueofwideningshallbe20%belowthe valuesforhexagonnutsspecifiedin4. ENISO10484:2004 OSI )E(7991:48401OSI 3 Tolerancesinmillimetres Tolerancesinmillimet

31、res 1) disthenominalthreaddiameterofthenut.For thetestingofoversizetappednutsthedimension d shallbeenlargedaccordingtothemajordiameterof theinternalthread. 2) misthenominalheightofthenut. Figure1Testmandrelforwidening ofnutsupto6%(1,06 d) orupto4%(1,04 d)respectively 1) Fistheload. 2)Hardened. 3) di

32、sthenominalthreaddiameterofthenut. Figure2Testassembly ENISO10484:2004 I NESO 01:4842004 (E) 3 Annex ZA (normative) Normative references to international publications with their relevant European publications This European Standard incorporates by dated or undated reference, provisions from other pu

33、blications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revi

34、sion. For undated references the latest edition of the publication referred to applies (including amendments). NOTE Where an International Publication has been modified by common modifications, indicated by (mod.), the relevant EN/HD applies. Publication Year Title EN Year ISO 898-2 1992 Mechanical

35、properties of fasteners - Part 2: Nuts with specified proof load values - Coarse thread EN 20898-2 1993 ISO 2320 1997 Prevailing torque type steel hexagon nuts - Mechanical and performance requirements EN ISO 2320 1997 ENISO10484:2004blankBS EN ISO 10484:2004 BSI 389 Chiswick High Road London W4 4AL

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