BS-EN-13298-2003.pdf

BRITISH STANDARD BS EN 13298:2003 Railway applications Suspension components Helical suspension springs, steel The European Standard EN 13298:2003 has the status of a British Standard ICS 21.160; 45.060.01 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:44:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 13298:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 21 March 2003 © BSI 21 March 2003 ISBN 0 580 41460 4 National foreword This British Standard is the official English language version of EN 13298:2003. The UK participation in its preparation was entrusted by Technical Committee RAE/3, Railway rolling stock material, to Subcommittee RAE/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 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 responsible 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 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 46, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:44:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 13298 March 2003 ICS 21.160; 45.060.01 English version Railway applications - Suspension components - Helical suspension springs, steel Applications ferroviaires - Eléments de suspension - Ressorts de compression hélicoïdaux, en acier Bahnanwendungen - Federungselemente - Schrauben- Druckfedern aus Stahl This European Standard was approved by CEN on 29 November 2002. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels © 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13298:2003 E Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:44:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13298:2003 (E) 2 Contents page Foreword4 1Scope 5 2Normative references 5 3Terms, symbols, units and their abbreviations6 3.1Terms 6 3.2Symbols, units and their abbreviations.7 3.3Definition of the geometrical characteristics9 4Classification of the product 10 5Requirements.10 5.1Service conditions.10 5.2Functional requirements.10 5.3Essential requirements .16 6Product specification 17 6.1Technical specification .17 6.2Design characteristics.18 6.3Material19 6.4Mechanical characteristics of the spring20 6.5Surface protection .21 7Test methods21 7.1General21 7.2Axial force-deflection testing21 7.3Transverse stiffness test.22 7.4Test of free transverse deflection 24 7.5Test of geometrical characteristics .24 7.6Test of general and essential requirements25 7.7Mechanical requirements26 7.8Surface protection .26 8Quality of the product27 8.1General27 8.2Product qualification procedures and samples27 8.3Control and monitoring of production quality28 8.4Final acceptance requirements29 8.5Non conformity.30 9Marking .31 10Packaging.31 Annex A (normative) Helical cylindrical compression springs with constant inclination, formed from cylindrical steel bars and featuring formed and ground ends32 A.1Object32 A.2Inner and outer diameters.32 A.3Ends of the spring .33 A.4Contact line.33 A.5Geometrical tolerances.33 A.6Distance between the coils.35 Annex B (normative) Materials for hot formed and treated helical suspension springs38 B.1General38 B.2Material for helical suspension springs, steel38 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:44:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13298:2003 (E) 3 Annex C (normative) Repeatability of prestressing by means of shot peening39 C.1Object39 C.2Check of the intensity39 C.3Check of the covering .42 Annex D (normative) Examination for inclusions.43 D.1Object43 D.2Test methods43 Annex E (normative) Magnetic detection of surface imperfections of helical springs formed from cylindrical steel bars .45 E.1Object45 E.2Methods45 E.3Special precautions.45 Bibliography46 Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:44:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13298:2003 (E) 4 Foreword This document (EN 13298:2003) has been prepared by Technical Committee CEN/TC 256 “Railway Applications“ 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 September 2003, and conflicting national standards shall be withdrawn at the latest by September 2003. In this European Standard the annexes A to E are normative. The preparation of this European Standard started in early 1992 with the aim to integrate the existing documents such as UIC 822 (International Union of Railways) and internal documents of various railway companies into a concise standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:44:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13298:2003 (E) 5 1 Scope This European Standard is applicable to helical steel suspension springs used in the suspension of rail vehicles. It deals specially with cylindrical compression springs made from round section steel bars of constant diameter and with constant inclination of coiling. It deals also with helical springs with different shapes (e.g. conical and/or inclination of coiling not constant and/or steel bar with other cross sections, etc.). This standard gives guidance for: design; specification of technical and quality requirements; the approval procedure and quality assurance of production methods; the examinations and tests to be carried out; the delivery conditions. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. 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 revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 473, Non-destructive testing Qualification and certification of NDT personnel General principles. EN 10002-1, Metallic materials Tensile testing Part 1: Method of test at ambient temperature. EN 10045-1, Metallic materials Charpy impact test Part 1: Test methods. EN 10083-1, Quenched and tempered steels Part 1: Technical delivery conditions of special steels. EN 10228-1, Non-destructive testing of steel forgings Part 1: Magnetic particle inspection. prEN 10089:1998, Hot-rolled steels for quenched and tempered springs Technical delivery conditions. EN ISO 2162-1:1996, Technical product documentation Springs Part 1: Simplified representation (ISO 2162- 1:1993). EN ISO 2162-2:1996, Technical product documentation Springs Part 2: Presentation of data for cylindrical helical compression springs (ISO 2162-2:1996). EN ISO 2162-3, Technical product documentation Springs Part: 3 Vocabulary (ISO 2162-3:1996). EN ISO 4288, Geometrical Product Specification (GPS) Surface texture: Profile method - Rules and procedures for the assessment of surface texture (ISO 4288:1996). EN ISO 10289, Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates Rating of test specimens and manufactured articles subjected to corrosion tests (ISO 10289:1999). Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:44:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13298:2003 (E) 6 EN ISO 14284, Steel and iron Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996). ISO 4967:1998, Steel Determination of content of non-metallic inclusions Micrographic method using standard diagrams. ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests. ISO/TR 10108, Steel Conversion of hardness values to tensile strength values. ISO 10209-1, Technical product documentation Vocabulary Part 1: Terms relating to technical drawings: general and types of drawings (ISO 10209-1:1992). EURONORM 103, Iron and steel - Macrographic determination of the ferritic or austenitic grain size of steels. EURONORM 104, Determination of the decarburization depth of unalloyed and low-alloy structural steels. UIC 515-4, Passenger rolling stock - Trailer bogies - Running gear - Bogie frame structure strength test1). DIN 50 602:1985, Metallographic examination; microscopic examination of special steels using standard diagrams to assess the content of non-metallic inclusions. 2) NF A 04-106:1984, Iron and steel Methods of determination of content of non metallic inclusions in wrought steel Part II: Micrographic method using standard diagrams. 3) SS 11 11 16: 1987, Steel Method for assessment of the content of non-metallic inclusions Microscopic method Jernkontoret's inclusion chart II for the assessment of non-metallic inclusions. 4) 3 Terms, symbols, units and their abbreviations 3.1 Terms For the purposes of this European Standard, the terms and definitions given in EN ISO 2162-3 and the following apply. 3.1.1 spring term “helical suspension spring, steel“ refers to the finished product. For simplification purposes, in the text of the present standard, the term “spring“ is used for all types of helical compression springs, made from steel, independent of their category 3.1.2 transverse deflection (bowing) natural transverse movement of the axis of the spring under an axial force, while the top and the bottom surface of the spring remain parallel and the spring is free to move laterally. The transverse force C is the force required to move the spring back to the initial centred position 1) Can be obtained from: UIC Direction Générale, 16 rue Jean Rey, F-75015 Paris. 2) Can be purchased from: Beuth Verlag GmbH, Burggrafenstr. 6, 10772 D-Berlin. 3) Can be purchased from: Association ? de normalisation (AFNOR), 11, av. Francis de Pressensé, F-93571 Aint- Denis La Plaine CEDEX. 4) Can be purchased from: SIS-Standardiseringen i Sverige, box 64 55, S-11 3 82 Stockholm. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:44:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13298:2003 (E) 7 3.1.3 clearance factor clearance between the active coils with reference to the wire diameter on a cylindrical helical spring with constant inclination, made with circular wire and featuring closed and ground ends 3.1.4 decarburization loss of carbon on the metal surface during the hot forming of the spring 3.1.5 space requirements volume occupied by the spring under its various operational conditions 3.1.6 creep loss of the spring length under a defined static or dynamic force in a defined time 3.1.7 contact line line located between each end coil and the adjacent active coil of the cylindrical helical spring with constant inclination, made with circular wire and featuring closed and ground ends (form D according to ISO 2162-2), in the loaded condition 3.1.8 active coil complete spiral turn of the wire with constant diameter, which remains without contact with adjacent coils within the entire working envelope of the spring 3.2 Symbols, units and their abbreviations The majority of the symbols, used in this standard and described in Table 1, are in accordance with EN ISO 2162-2. Licensed Copy: sheffieldun sheffieldun, na, Sun Oct 29 09:44:55 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 13298:2003 (E) 8 Table 1 Symbols and their definition No SymbolUnitDescription 1A%Elongation at rupture 2AR%Allowable deviation of axial stiffness 3dmmDiameter of the steel bar 4DmmMean diameter of the winding (average coiling diameter) 5DemmOuter spring diameter 6DimmInner spring diameter 7emmClearance between the active coils Fj(F1, F2,)NAxial static force, applied on the spring, with: FANMinimum operational force FBNMaximum operational force FcthNTheoretical force, corresponding to the solid length of spring Fcj (FC0,FC1)NDefined test loads for determination of bowing (transverse displacement) FMNForce at minimum allowable length FUNLower test force for determination of stiffness KS (or flexibility) 8 FVNUpper test force for determination of stiffness KS (or flexibility) 9g m/s 2 Earth acceleration (gravity) 10GMPaShear modulus (default value is G = 79 000 MPa) 11L0mmFree length of spring Lj (L1, L2, )mmLength of the spring when subjected to an axial force Fj, LAmmLength of the spring when subjected to the axial force FA LBmmLength of th