1、BRITISH STANDARD BS EN 14200:2004 Railway applications Suspension components Parabolic springs, steel The European Standard EN 14200:2004 has the status of a British Standard ICS 45.040 BS EN 14200:2004 This British Standard was published under the authority of the Standards Policy and Strategy Comm
2、ittee on 28 January 2004 BSI 28 January 2004 ISBN 0 580 43324 2 National foreword This British Standard is the official English language version of EN 14200:2004. The UK participation in its preparation was entrusted by Technical Committee RAE/3, Railway rolling stock material, to Subcommittee RAE/3
3、/-/4, Suspension components, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found
4、in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are respons
5、ible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the
6、 UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 54, an inside back cover and a back cover. The BSI copyright notice displayed in
7、 this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN14200 January2004 ICS45.040 Englishversion RailwayapplicationsSuspensioncomponentsParabolic springs,steel ApplicationsferroviairesElm
8、entsdesuspension Ressortsparaboliques,enacier BahnanwendungenFederungselementeParabelfedern ausStahl ThisEuropeanStandardwasapprovedbyCENon3November2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstand
9、ardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsib
10、ilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,N
11、etherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved wor
12、ldwideforCENnationalMembers. Ref.No.EN14200:2004:EEN14200:2004(E) 2 Contents page Foreword5 Introduction .6 1 Scope 6 2 Normativereferences 6 3 Terms,definitionsandsymbols .8 3.1 Termsanddefinitions. .8 3.2 Symbols 9 4 Dimensions,characteristics,designation .10 4.1 General10 4.2 Completespring,formA
13、. 10 4.2.1 Doublespring,formA . 10 4.2.2 Exampleofdesignation .16 4.2.3 Materials16 4.3 Completespring,typeB. .17 4.3.1 Singlespring,typeB . 17 4.3.2 Exampleofdesignation .21 4.3.3 Materials22 5 Individualparts .22 5.1 General22 5.2 Springbuckle,typeA . .23 5.3 Springbuckle,typeB . .24 5.4 Padandcom
14、pensatingpad 25 5.5 Gibheadkey .26 5.6 Taperkey . .27 6 Requirementstobedefinedbythecustomer .27 6.1 Operatingconditions .27 6.2 Geometricalrequirements 28 6.2.1 Thedesignandcharacteristiccurve . 28 6.2.2 Spacerequirement. 28 6.2.3 Springbuckleheightofthespringreadyforinstallation. .28 6.2.4 Centred
15、istanceoftheeyes . .28 6.3 Mechanicalrequirements. .28 6.3.1 Axleload . 28 6.3.2 Specificcompliance . .28 6.3.3 Servicelife 28 7 Productspecification . .28 7.1 Technicalspecification . 28 7.1.1 Materialcrosssection .28 7.1.2 Numberofspringleaves. 29 7.1.3 Rectangularityofthespringeyes . .29 7.2 Mate
16、rial29 7.2.1 General29 7.2.2 Chemicalcomposition .29 7.2.3 Inclusioncleaness .29 7.3 Mechanicalproperties . 29 7.3.1 General29 7.3.2 Hardness.29 7.3.3 Toughness29 7.3.4 Compressivestressesinthesurface . .29EN14200:2004(E) 3 7.4 Physicalrequirements. 30 7.4.1 Surfacefinish .30 7.4.2 Decarburization30
17、 7.4.3 Generationofinherentcompressivestressesinthesurface .30 7.4.4 Grainsize 30 7.5 Other .30 7.5.1 Surfaceprotection .30 7.5.2 Handlinginformation .31 7.5.3 Markingofspringbuckle 31 8 Testmethods 31 8.1 Requirements.31 8.1.1 Generalrequirements 31 8.1.2 Measuringdevice .31 8.2 Requirementsforspri
18、ngtestunderload . .31 8.2.1 Requirements.31 8.2.2 Bendtestundertestload. .32 8.2.3 Testingofspecificcompliance 32 8.2.4 Testingthespringcharacteristic . 35 8.3 Resistancetoslippingofthespringleaves. .37 8.3.1 Displacementresistancetest1 37 8.3.2 Displacementresistancetest2 38 8.4 Methodsoftestandtak
19、ingofsamplesforgeneralandbindingrequirements 38 8.4.1 Surfacedefects . .38 8.4.2 Compressivestressesonthesurface. 38 8.4.3 Depthofdecarburization 38 8.4.4 Tensilestrength .39 8.4.5 Hardnesstest . 40 8.4.6 ImpactstrengthonUnotchtestpieces 40 8.4.7 Chemicalcomposition .40 8.5 Testingofthespringbuckle
20、.40 8.5.1 Hardnesstest . 40 8.5.2 Bendingtestonthespringbuckle. 40 8.5.3 Expandingtestpieceonthespringbuckle . .40 8.6 Testinganddesignofthespringeye 40 9 Productqualityandfinalinspection 41 9.1 General41 9.2 Controlandmonitoringofproductionquality 41 9.2.1 General41 9.2.2 Qualityassuranceplan .42 9
21、.2.3 Batchcontrol. .42 9.3 Requirementsforthefinalinspection . 42 9.3.1 General42 9.3.2 Documentation.44 9.4 Nonconformity .44 10 Markingofthespringbuckle. .45 11 Packaging .45 AnnexA (normative) Materialsforhotformedandtreatedparabolicsprings46 A.1 General46 A.2 Materialforparabolicsprings,steel .
22、.46 AnnexB (normative) Magneticparticletestingonspringleaves .47 B.1 General47 B.2 Methodfordetectingdefects 47 B.2.1 Principle47 B.2.2 Tests48 AnnexC (normative) TestingtheefficiencyoftheshotpeeningbytheALMENmethod 50 C.1 Fieldofapplication 50 C.2 Testingofthemethod . 50 C.3 Deviceandinstallation.
23、.50EN14200:2004(E) 4 C.3.1 ALMENA2sensor. .50 C.3.2 Specimenholder . .51 C.3.3 ALMENmeasuringapparatus. 51 AnnexD (normative) Testingforinclusions. .53 D.1 Object53 Bibliography 54EN14200:2004(E) 5 Foreword Thisdocument(EN14200:2004)hasbeenpreparedbyTechnicalCommitteeCEN/TC256“Railwayapplications“,
24、thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJuly2004,andconflictingnationalstandardsshallbewithdrawnatthelatestby July2004. Theworkhasbeendelegatedbysubcommitee2“Wheelsetsandbogies“to
25、WorkingGroup14“Steelsprings“. TheannexesA,B,CandDarenormative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Cyprus,CzechRepublic,Denmark, Estonia,Finland,France,Germany,Greece,Hungary,Ice
26、land,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta, Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom.EN14200:2004(E) 6 Introduction PreparationofthisEuropeanStandardwasstartedatthebeginningof1998withtheaimofintegratingtheexisting documentssuchasUICleafl
27、ets(InternationalUnionofRailways),andtheinternalstandardsofthevarious railwaysintoacomprehensivestandard. 1Scope ThisEuropeanStandardappliestoparabolicspringsasspringelementsforrailvehicles. ThisEuropeanStandardisaguidetothefollowingsubjects: design; specificationoftechnicalandqualitativerequirement
28、s; approvalproceduresandqualityassuranceofproductionmethods; testsandinspectionstobecarriedout; delivery conditions. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthe
29、publicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN473, Nondestructivetest
30、ingQualificationandcertificationofNDTpersonnelGeneralprinciples. EN499, WeldingconsumablesCoveredelectrodesformanualmetalarcweldingofnonalloyandfinegrainsteels Classification. EN100021, MetallicmaterialsTensiletestingPart1:Methodoftestatambienttemperature. EN10025, Hotrolledproductsofnonalloystructu
31、ralsteelsPart1:Technicaldeliveryconditions. EN100451, MetallicmaterialsCharpyimpacttestPart1:Testmethod. EN10089:2002, HotrolledsteelsforquenchedandtemperedspringsTechnicaldeliveryconditions . EN100921,HotrolledspringsteelflatbarsPart1:FlatbarsDimensionsandtolerancesonshapeand dimensions. EN10142, C
32、ontinuouslyhotdipzinccoatedlowcarbonsteelsstripandsheetforcoldformingTechnicaldelivery conditions. EN227681, GeneraltolerancesPart1:Tolerancesforlinearandangulardimensionswithoutindividualtolerance indications(ISO27681:1989). EN25817, ArcweldedjointsinsteelGuidanceonqualitylevelsforimperfections(ISO
33、5817:1992). ENV10247, Micrographicexaminationofthenonmetallicinclusioncontentofsteelsusingstandardpictures. ENISO21623, TechnicalproductdocumentationSpringsPart3:Vocabulary(ISO21623:1993).EN14200:2004(E) 7 ENISO30982, TechnicalproductdocumentationLetteringPart2:Latinalphabet,numeralsandmarks(ISO 309
34、82:2000). ENISO65061, MetallicmaterialsBrinellhardnesstestPart1:Testmethod(ISO65061:1999). ISO1101, TechnicaldrawingsGeometricaltolerancingTolerancingofform,orientation,locationandrunout Generalities,definitions,symbols,indicationsondrawings. ISO9227, CorrosiontestsinartificialatmospheresSaltsprayte
35、sts. ISO/TR10108, SteelConversionofhardnessvaluestotensilestrengthvalues. EURONORM103, Microscopicdeterminationoftheferriteorausteniticgrainsizeofsteels.EN14200:2004(E) 8 3 Terms,definitionsandsymbols 3.1 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thetermsanddefinitionsgiveninENISO2162
36、3togetherwiththe followingapply. 3.1.1 parabolicsprings term“steelparabolicspring“relatestothefinishedproduct.Forthesakeofsimplification,theterm“spring“isused inthistextregardlessofitscategoryforalltypesofsteelparaboliccompressionsprings NOTE1 Leafspringofconstantwidthwithleavesofapproximatelyequall
37、engtharrangedoneabovetheother,thethicknessof whichdecreasesfromthemiddletowardstheends. NOTE2 Inthemainlyspringyareasbetweenthefixingpoint(springbuckle)atthecentreofthespringandthebearing surfacesoftheleavesattheends,thethicknessfollowsthefunctionofasquareparabola.Theleavesintheseareasare separatedf
38、romeachotherbyanairgaptoavoidfrictionalcorrosion. 3.1.2 airgap spacedesignedtobebetweentheleavesofthespring 3.1.3 decarburization reductionofcarboninthesurfacelayerofmetal 3.1.4 spacerequirements volumetakenupbythespringunderthedifferentoperatingconditions 3.1.5 doubleparablolicspring springcomprisi
39、ngamainspringeffectiveoverthewholeworkingrangeandanadditionalspringthatcomesinto operationsubsequentlywhenacertainloadinghasbeenreached(seeFigure11) 3.1.6 singleparabolicspring springwiththesameloadingcapacityoverthewholeworkingrange(seeFigure12)EN14200:2004(E) 9 3.2Symbols Table1containsalistofthes
40、ymbolsusedinthisstandardtogetherwiththeirmeaning. Table1 Symbols Symbol Unit Explanation Appliestotype B A mm Leafwidthinthespringeyearea A,B C a mm/kN Specificcomplianceofthesinglespring B C a1 mm/kN Specificcomplianceofthemainspringmeasuredinthewagoncarrier truck A C a2 mm/kN Specificcomplianceoft
41、hewholespringmeasuredinthewagoncarrier truck A D mm Diameterofthespringeye A,B F 1 N Forcefordeterminingtheheight H 1 A,B F 2 N Forcefordeterminingtheheight H 2 A F 3 N Endforceforcheckingtheheights H andthespecificcompliance A,B F s1 F sm N Loadforcalculationofspecificcompliance A,B F ER N Forceono
42、perationoftheadditionalspringinthewagoncarriertruck A h mm Meanleafthickness A,B h H mm Meanleafthicknessofthemainspring B h Z mm Meanleafthicknessoftheadditionalspring A h ZW mm Thicknessofthepad A H E/H E mm Gapbetweenthemainspringandadditionalspringintheunloaded condition A H 0 mm Heightoftheunlo
43、adedspringfromthebottomedgeofthespringbuckle tothemiddleofthespringeye A,B H 1 mm Heightofthespringloadedwithforce F 1fromthebottomedgeofthe springbuckletothemiddleofthespringeye A,B H 2 mm Heightofthespringloadedwithforce F 2fromthebottomedgeofthe springbuckletothemiddleofthespringeye A H 1c , H 1d
44、 mm Springheightmeasured A,B H B mm Springbuckleheightofthespringreadyforinstallation A,B J mm Springeyegap A,B L R mm Distancebetweenthemiddleofthespringandthemiddleoftherib A,B L S mm Distancebetweenthemiddlesoftheeyeswiththemainspringleaf extended A,B L 0 mm Distancebetweenthemiddlesoftheeyeswiththemiddleunloaded A,B S ER mm Deflectionofthemainspringuptooperationoftheadditionalspringinthe wagoncarriertruck A,B ss S N/mm Bendingstress
