1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 14535-2:2011Railway applications Brakediscs for railway rolling stockPart 2: Brake discs mounted onto thewheel, dimensions and quality requirementsBS EN 14535-2:2011 BRITIS
2、H STANDARDNational forewordThis British Standard is the UK implementation of EN 14535-2:2011.The UK participation in its preparation was entrusted to TechnicalCommittee RAE/4, Railway Applications - Braking.A list of organizations represented on this committee can beobtained on request to its secret
3、ary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 57771 0ICS 45.060.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published
4、 under the authority of theStandards Policy and Strategy Committee on 31 July 2011.Amendments issued since publicationDate Text affectedBS EN 14535-2:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14535-2 June 2011 ICS 45.060.01 English Version Railway applications - Brake discs for railwa
5、y rolling stock - Part 2: Brake discs mounted onto the wheel, dimensions and quality requirements Applications ferroviaires - Disques de frein pour matriel roulant ferroviaire - Partie 2: Disques de frein monts sur la roue, dimensions et exigences de qualit Bahnanwendungen - Bremsscheiben fr Schiene
6、nfahrzeuge - Teil 2: Bremsscheiben, die an einem Rad befestigt werden, Abmessungen und Qualittsanforderungen This European Standard was approved by CEN on 4 May 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Sta
7、ndard 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (Engli
8、sh, 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, B
9、ulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE
10、FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14535-2:2011: EBS EN 14535-2:2011EN 14535-2
11、:2011 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and definitions .54 Symbols 75 Items to be agreed between contracting parties and documented 75.1 Information to be supplied 75.2 Items for agreement 86 Requirements .96.1 Purpose .96.2 Materials, design and
12、manufacture96.3 Dimensions 106.4 Performance 156.5 Installation . 187 Test methods . 187.1 Type tests (Category A test) 187.2 Application test . 187.3 Routine tests . 198 Classification and designation 208.1 Classification . 208.2 Designation . 209 Marking and packaging 219.1 Marking 219.2 Packing a
13、nd protection 22Annex A (informative) Experimentation in service (checking of the operating requirement) category C2 test 23Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC . 24Bibliography . 27BS EN 14535-2:2011EN 14535-2:2
14、011 (E) 3 Foreword This document (EN 14535-2:2011) 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 endorsemen
15、t, at the latest by December 2011 and conflicting national standards shall be withdrawn at the latest by December 2011. This document has been prepared under a mandate given to CEN/CENELEC/ETSI by the European Commission and the European Free Trade Association, and supports Essential Requirements of
16、 EU Directive 2008/57/EC. For relationship with EU Directive 2008/57/EC, see informative Annex ZA, which is an integral part of this document. This series of European Standards Railway applications Brake discs for railway rolling stock consists of: Part 1: Brake discs pressed or shrunk onto the axle
17、 or drive-shaft, dimensions and quality requirements 1 Part 2: Brake discs mounted onto the wheel, dimensions and quality requirements Part 3: Brake discs, performance of the disc and of the pad and disc friction couple, classification1)Attention is drawn to the possibility that some of the elements
18、 of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. Until Part 3 is made publicly available, the existing relevant national standards or other suitable regulations should be used as an interim solution
19、 where prEN 14535-3 is referenced in this document. NOTE On publication of Part 3, Part 2 may be reviewed to take into account any necessary changes. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Europea
20、n Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the
21、United Kingdom. 1)To be published. BS EN 14535-2:2011EN 14535-2:2011 (E) 4 Introduction This European Standard gives the requirements to be met for the design, dimensions, performance and test-ing of the brake disc, hereafter called “disc”. These requirements cannot be written in sufficient detail t
22、o en-sure good workmanship or proper construction. Each manufacturer is therefore responsible for taking every necessary step to make sure that the quality of design, workmanship and construction is such as to ensure accordance with good engineering practice. BS EN 14535-2:2011EN 14535-2:2011 (E) 5
23、1 Scope This European Standard specifies requirements to be met for the design, dimensions, performance and testing of the brake disc. This European Standard applies to brake discs mounted onto the wheel, including the wheel web or wheel hub of railway rolling stock. For each discrete unit so fitted
24、, one or more disc brake rings, each having one friction face, may be deployed. This European Standard applies to discs designed to be fitted to rail vehicles used on the main national net-works, urban networks, underground railways, trams, private networks (regional railways, company railways, etc.
25、). In addition to the common requirements, this European Standard also requires the items detailed in Clause 5 to be documented. For compliance with this European Standard, both the common requirements and the documented items need to be met. 2 Normative references The following referenced documents
26、 are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 14478:2005, Railway applications Braking Generic vocabulary prEN 153282), Railwa
27、y applications Braking Brake pads 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 14478:2005 and the following apply. 3.1 brake disc rotor having one or more co-planar annular friction faces for the engagement of brake pads and means of transmitting r
28、otation between itself and the associated web or hub NOTE 1 It may absorb and dissipate at least part of the brake energy. NOTE 2 This definition is identical to 4.9.7.10 in EN 14478:2005. 3.2 friction face radially and circumferentially extending planar surface of the disc available for frictional
29、engagement of the brake pad(s) 3.3 brake ring portion of the disc having the friction face 2)To be published. BS EN 14535-2:2011EN 14535-2:2011 (E) 6 NOTE 1 Brake rings having a continuity of material allowing in that volume no flow of air are ”non-ventilated”. Otherwise they are ”ventilated”. NOTE
30、2 Brake rings being of homogenous material construction behind the friction face are ”homogenous” or otherwise ”non-homogenous”. NOTE 3 Brake rings may consist of one or more sectors and may have continuous or non-continuous friction faces. NOTE 4 Split brake rings are those which are separated into
31、 two halves. Segmented brake rings are those which are separated into more than two parts. 3.4 fastening area portion of the disc having means for the fastening on the wheel NOTE The fastening area may be constructed integral with the brake ring or connected to it by a separate linking arrangement.
32、3.5 non-ventilated disc (solid disc) disc having a continuity of material or materials extending from the friction face axially to the rear face so preventing the flow of air through the body of the disc 3.6 ventilated disc disc in which passages to conduct a flow of cooling air are located between
33、the friction ring and the web of the wheel NOTE The airflow is usually occasioned by the rotation of the disc. 3.7 maximum permissable disc temperature highest operating temperature related to the application NOTE This may be expressed as an absolute peak value or as a nominal value over a defined p
34、eriod of time. 3.8 split disc disc in which the brake ring is separated in two halves 3.9 segmented disc disc in which the brake ring is separated in more than two parts 3.10 maximal permissible rotational speed highest rotational speed related to the application 3.11 direct actuation brake in which
35、 the brake pad normal force is applied directly (as in the case of an ”automobile” type of brake caliper) 3.12 indirect actuation brake in which the brake pad normal force is applied via a lever system 3.13 part uniquely identified pattern of a detail in an assembly or a component BS EN 14535-2:2011
36、EN 14535-2:2011 (E) 7 3.14 identification number number for identification of the part, item or article 3.15 performance class set of the values of brake energy, braking power and brake torque, related to the outer diameter, width and type of the disc, at which it is type tested to demonstrate its c
37、apability to withstand these conditions without exceeding the defined limits of structural degradation NOTE Discs are categorized into the performance classes according to the tests to be covered in prEN 14535-33): Brake discs, performance of the disc and of the pad and disc friction couple, classif
38、ication. 3.16 braking energy energy dissipated per disc 3.17 braking torque torque per disc generated by the brake calliper and the pad friction value 3.18 braking power braking energy per unit time 4 Symbols For the purpose of this European Standard, the following symbols apply. Table 1 Symbols and
39、 units Symbol Description Unit d Diametrical dimension mm RaSurface roughness (arithmetical mean deviation of the assessed profile) m RzSurface roughness (maximum height of profile) m U Imbalance g m x Axial dimension mm 5 Items to be agreed between contracting parties and documented 5.1 Information
40、 to be supplied The following information to be supplied shall be fully documented. For compliance with the standard both the common requirements specified throughout the standard and the following documented items shall be satisfied: any special conditions for manufacture and any special characteri
41、stics for the materials used (6.2, Note 1); 3)To be published. BS EN 14535-2:2011EN 14535-2:2011 (E) 8 access to the wheel for testing and checking without dismantling the disc, including envelope dimensions (6.3.2, note); any requirement for surface roughness other than that specified in this stand
42、ard (6.3.4, note); values for imbalance class 3, if appropriate (6.3.5, note); approved test method for crack detection (6.4.2); whether a declaration of the constant brake moment is required (6.4.3, note); whether a declaration of the ventilation losses is required (6.4.4, note); environmental cond
43、itions, which the disc is required to be able to withstand (6.4.7); identification and traceability of the manufacturing process of the discs and their component parts at all stages of production, inspection and delivery (7.3.3); format, storage medium and retrieval system for records if other than
44、the normal practice of the supplier (7.3.5, Notes 1 and 2); method of marking if other than those specified in this European Standard (9.1.3). NOTE Usually these items of information are supplied by the purchaser. 5.2 Items for agreement The following items to be agreed between the contracting parti
45、es are specified in the clauses referred to and shall be fully documented. For compliance with the standard both the common requirements specified throughout the standard and the following documented items shall be satisfied: form of the disc fastening areas features (6.3.1, note); indication of dis
46、c wear limits (6.3.3); process used to achieve the imbalance requirement other than that specified in this European Standard (6.3.5); dimensional tolerances for discs having a maximal permissible rotational speed greater than 2 200 rpm (6.3.6); maximum values for corrugation, swashing and buckling f
47、or disc designs other than those in which the fastening points are centred (6.4.2); corresponding values after a category C2 test (6.4.2, 7.2 and Annex A); performance test (category B, C1) (6.4.6 and 7.2); in-service limit (6.4.7); method of calculation for verification of requirements for wheel an
48、d brake disc (6.5); any additional marking (9.1.2); packing and protection (9.2); time duration or number of kilometres for test (Annex A); BS EN 14535-2:2011EN 14535-2:2011 (E) 9 number of discs and vehicles used for the checking of the operating requirement (Annex A); any controls to be realized a
49、nd prescriptions to be met before and/or after the checking test of operating requirement (Annex A); pass-fail criteria (Annex A). 6 Requirements 6.1 Purpose The discs are intended to be used as part of a friction brake and shall fulfil the following purposes: permit a braking moment or torque to be generated, supported and transmitted to the rail vehicle wheel; permit, by frictional engagement o
