1、November 2015 English price group 35No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 45.040; 45.060.01!%G)e“2360666w
2、ww.din.deDIN EN 16452R a i l w a y a p p l i c a t i o n s B r a k i n g Brake blocks;E n g l i s h v e r s i o n E N 1 6 4 5 2 : 2 0 1 5 ,English translation of DIN EN 16452:2015-11B a h n a n w e n d u n g e n B r e m s e Bremsklotzsohlen;E n g l i s c h e F a s s u n g E N 1 6 4 5 2 : 2 0 1 5 ,En
3、glische bersetzung von DIN EN 16452:2015-11A p p l i c a t i o n s f e r r o v i a i r e s F r e i n a g e Semelles de frein;V e r s i o n a n g l a i s e E N 1 6 4 5 2 : 2 0 1 5 ,Traduction anglaise de DIN EN 16452:2015-11www.beuth.deDocument comprises 171 pagesDTranslation by DIN-Sprachendienst.In
4、 case of doubt, the German-language original shall be considered authoritative.10.15 DIN EN 16452:2015-11 2 A comma is used as the decimal marker. National foreword This document (EN 16452:2015) has been prepared by Technical Committee CEN/TC 256 “Railway applications” (Secretariat: DIN, Germany). T
5、he responsible German body involved in its preparation was the DIN-Normenausschuss Fahrweg und Schienenfahrzeuge (DIN Standards Committee Railway), Working Committee NA 087-00-03 AA Bremse. This standard is based on the English reference version. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN
6、16452 July 2015 ICS 45.040; 45.060.01 English Version Railway applications - Braking - Brake blocks Applications ferroviaires - Freinage - Semelles de frein Bahnanwendungen - Bremse - Bremsklotzsohlen This European Standard was approved by CEN on 28 February 2015. CEN members are bound to comply wit
7、h 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 CEN-CENELEC Manag
8、ement 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 CEN-CENELEC Management Centre has the same sta
9、tus as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malt
10、a, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN
11、 All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16452:2015 EEN 16452:2015 (E) 2 Contents Page Foreword 7 Introduction .8 1 Scope 9 2 Normative references 9 3 Terms and definitions 10 4 Abbreviations 11 5 Overall requirements 12 5.1 De
12、viations from requirements . 12 5.2 Functions . 12 5.3 Operational criteria . 13 5.3.1 Friction material performance . 13 5.3.2 Service performance 13 5.3.3 Brake block characteristics . 14 6 Acceptance procedure . 14 6.1 Brake block performance requirements . 14 6.1.1 General . 14 6.1.2 Category A
13、. 14 6.1.3 Category B . 15 6.1.4 Category C . 15 6.2 Approval test requirements . 15 6.3 Dynamometer specification . 18 7 Category A requirements . 18 7.1 Brake block characteristics . 18 7.1.1 Standard design 18 7.1.2 Brake block characterization test . 18 7.1.3 Brake block mechanical characteristi
14、cs for service operation . 18 7.2 Dynamic friction performance . 19 7.2.1 Generic requirements for assessment process 19 7.2.2 Bedded and non bedded performance . 19 7.2.3 Variation in mean coefficient of friction in dry condition for a brake to rest . 19 7.2.4 Mean friction coefficient variation un
15、der wet conditions . 19 7.2.5 Mean friction coefficient variation at high initial temperature . 20 7.2.6 Mean friction coefficient variation after simulation of a downhill brake application 20 7.2.7 Instantaneous friction coefficient variation during simulation of a downhill brake application . 20 7
16、.2.8 Variation in instantaneous friction for a brake to rest 22 7.3 Static friction coefficient 22 7.4 Extreme winter conditions (freight wagons) 22 7.4.1 General . 22 7.4.2 Dynamometer test. 23 7.4.3 Train brake test . 23 7.5 Locked brake (fusibility) 23 7.5.1 Generic prescriptions . 23 7.5.2 Speci
17、fic prescriptions for freight wagons 24 8 Category B requirements . 24 8.1 Vehicle brake test . 24 8.2 Dynamometer wear test (friction couple) . 25 DIN EN 16452:2015-11 EN 16452:2015 (E) 3 8.3 Dynamic friction performance . 25 8.4 In service assessment 25 9 Category C requirements 25 9.1 Metal pick
18、up 25 9.2 Influence on track circuit operation (shuntage) . 26 10 Environmental issues . 26 10.1 General . 26 10.2 Noise . 26 10.3 Odour 26 10.4 Smoke, fumes and sparkling 26 10.5 Recycling and disposal . 26 11 Marking . 27 Annex A (normative) Summary of Dynamometer test programs and acceptance crit
19、eria 28 Annex B (normative) General requirements for conducting dynamometer test programmes . 30 B.1 General . 30 B.2 Rotation and ventilation conditions 30 B.3 Brake application timing ts. 30 B.4 Bedding 30 B.5 Wear 30 B.6 Roughness index of the wheel tread . 31 B.7 Interruption of the tests 31 B.8
20、 Temperatures . 31 B.9 Wet conditions . 31 B.10 Test of simulation of downhill 32 B.11 Test wheels 32 Annex C (normative) Composite brake blocks (K) (2Bg 2Bgu) Demonstration of friction properties for S and SS (S/SS) braked freight wagons (vmax= 120 km/h) 33 C.1 Program for performance tests 33 C.2
21、Program for simulation brake assessment . 38 C.3 Dispersion range of mean friction coefficients 39 C.4 Dispersion range of instantaneous friction coefficients . 42 Annex D (normative) Composite brake blocks (LL) Demonstration of friction properties for S and SS (S/SS) braked freight wagons (vmax= 12
22、0 km/h) 44 D.1 Program for performance tests 44 D.2 Program for simulation brake assessment . 48 D.3 Dispersion range of mean friction coefficients 50 D.4 Dispersion range of instantaneous friction coefficients . 52 Annex E (normative) Composite brake blocks (K) (1Bg) Demonstration of friction prope
23、rties for S and SS (S/SS) braked freight wagons (vmax= 120 km/h) . 53 E.1 Program for performance tests 53 E.2 Dispersion range of mean friction coefficients 56 DIN EN 16452:2015-11 EN 16452:2015 (E) 4 E.3 Dispersion range of instantaneous friction coefficients 58 Annex F (normative) Composite brake
24、 blocks (L) Demonstration of friction properties for extra tread brake of coach . 59 F.1 Program for performance tests . 59 F.2 Program for simulation brake assessment 62 F.3 Dispersion range of mean friction coefficients in dry condition . 63 F.4 Dispersion range of mean friction coefficients in we
25、t condition . 64 F.5 Dispersion range of instantaneous friction coefficients 65 Annex G (normative) Composite brake blocks (K) Demonstration of friction properties for locomotives . 67 G.1 Program for performance tests . 67 G.2 Program for simulation brake assessment 70 G.3 Dispersion range of mean
26、friction coefficients in dry condition . 71 G.4 Dispersion range of mean friction coefficients in wet condition . 72 G.5 Dispersion range of instantaneous friction coefficients 73 Annex H (normative) Composite brake blocks (K) Demonstration of friction properties for EMU DMU . 75 H.1 Program for per
27、formance tests . 75 H.2 Program for simulation brake assessment 80 H.3 Dispersion range of mean friction coefficients in dry condition . 81 H.4 Dispersion range of mean friction coefficients in wet condition . 82 H.5 Dispersion range of instantaneous friction coefficients 83 Annex I (normative) Comp
28、osite brake blocks (K) Demonstration of friction properties for High speed train (motor bogie) 85 I.1 Program for performance tests . 85 I.2 Program for simulation brake assessment 88 I.3 Dispersion range of mean friction coefficients in dry condition . 89 I.4 Dispersion range of mean friction coeff
29、icients in wet condition . 91 I.5 Dispersion range of instantaneous friction coefficients 92 Annex J (informative) Dynamometer test program Generic test program 94 J.1 General . 94 J.2 Generic test program . 94 J.3 Definitions . 97 J.4 Principle of assessment and pass/fail criteria . 98 Annex K (nor
30、mative) Dynamometer Test program to detect the formation of metal pick-up at the brake block 99 K.1 Test program for freight wagons with brake blocks type K and LL 99 K.2 Test program for locomotives with brake blocks type K . 101 K.3 Test program for EMU DMU with brake blocks type K 103 K.4 Test pr
31、ogram for High speed train with brake blocks type K 106 DIN EN 16452:2015-11 EN 16452:2015 (E) 5 Annex L (normative) Dynamometer test program to demonstrate the extreme winter braking properties . 109 L.1 Test program for freight wagons with brake blocks type K 109 L.2 Test program for freight wagon
32、s with brake blocks type LL 111 L.3 Specific requirements for conducting Test Programs L.1 and L.2 112 L.4 Process of assessment and past fail criteria for test programs L.1 and L.2 113 L.5 Generic flow chart to perform test program . 114 L.6 Detailed flow chart to perform test program (example brak
33、e block K) 115 Annex M (normative) Test run to demonstrate the extreme winter braking properties brake blocks K LL for freight wagons . 118 M.1 General . 118 M.2 Test conditions 118 M.3 Bases for assessment . 119 M.4 Assessment of measurement data and pass/fail criteria 121 Annex N (normative) Dynam
34、ometer Test program to simulate “Locked brake” 123 N.1 Test program for freight wagons with brake blocks type K and LL . 123 N.2 Test program for locomotives with brake blocks type K 124 N.3 Test program for EMU DMU with brake blocks type K . 125 N.4 Test program for High speed train with brake bloc
35、ks type K . 126 Annex O (normative) Dynamometer test program to demonstrate the compatibility with track circuits 127 O.1 General . 127 O.2 Short description of the measuring method used . 127 O.3 Schematic diagram of test set up 127 O.4 Flow chart to perform test program 129 O.5 Preparation of the
36、disc and the rollers 129 O.6 Preparation of the samples of brake block . 129 O.7 Contamination of disc . 130 O.8 Measurements . 131 O.9 Assessment of the results 132 Annex P (informative) Vehicle test to demonstrate the compatibility with track circuits . 134 P.1 General . 134 P.2 Test conditions 13
37、4 P.3 Assessment of results 135 P.4 Pass/fail criteria . 136 Annex Q (informative) Dynamometer test program Determination of static friction coefficient . 138 Q.1 Test program for freight wagons with brake blocks type K and LL . 138 Q.2 Test program for EMU DMU and Locomotive with brake blocks type
38、K 139 Q.3 Test program for High speed train with brake blocks type K . 140 DIN EN 16452:2015-11 EN 16452:2015 (E) 6 Q.4 Specific Requirements for conducting dynamometer test programmes Q.1 to Q.3 . 140 Annex R (informative) Dynamometer test program Simulation of service conditions for freight wagons
39、 . 143 R.1 Simulation freight wagon with brake block type K 2Bgu . 143 R.2 Simulation freight wagon with brake block type LL 2Bgu . 145 Annex S (normative) Interchangeability, rejection lugs and critical dimensions 148 Annex T (normative) Brake block shear and flexural strength tests . 151 T.1 Gener
40、al . 151 T.2 Shear strength test . 151 T.3 Flexural strength test . 152 Annex U (normative) Limitation of permissible mechanical damage of brake block 154 U.1 General . 154 U.2 Cracked through to back-plate 154 U.3 Crumbling of the friction material . 155 U.4 Metal pick-up . 155 U.5 Detachment from
41、back-plate . 156 U.6 Cracks in the direction of wheel circumference 156 U.7 Detachment of the friction material 156 U.8 Interface with the brake block holder . 156 Annex V (normative) In service assessment of brake block 158 V.1 General . 158 V.2 Freight wagon . 158 V.3 Coach . 159 V.4 Locomotive 15
42、9 V.5 EMU-DMU . 160 V.6 High speed train 160 V.7 Description of areas to be monitored and additional measures . 161 V.8 Pass/fail criteria 162 Annex W (informative) Complementary definitions and abbreviations 163 Annex X (informative) Brake block characterization test . 165 Annex ZA (informative) Re
43、lationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC . 166 Bibliography . 169 DIN EN 16452:2015-11 EN 16452:2015 (E) 7 Foreword This document (EN 16452:2015) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretariat of
44、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 2016, and conflicting national standards shall be withdrawn at the latest by January 2016. Attention is drawn to the p
45、ossibility that some of the elements 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. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Tra
46、de Association, and supports essential requirements of 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. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followin
47、g countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norw
48、ay, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16452:2015-11 EN 16452:2015 (E) 8 Introduction For environmental reasons (reduction of rolling noise), this European Standard does not cover cast iron brake block requirements, althou
49、gh cast iron brake block technology is still widely used in Europe. Cast iron has already been replaced by composite materials for new rolling stock builds and major steps have been taken by EEC (TSI) and UIC in 2004 to accelerate the change from cast iron to composite materials. When published this European Standard will replace the current UIC requirements for technical approval of brake blocks. The requirements of this EN are based on the state of
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