SIST EN 16452:2015
(Main)Railway applications - Braking - Brake blocks
Railway applications - Braking - Brake blocks
This European Standard specifies requirements for brake blocks, including interface requirements to be met by design in order to ensure the presence of the correct friction material, performance requirements to be met by rig, slip line and commercial testing and environmental requirements, including noise reduction requirements.. This European Standard defines the level, tolerances, as well as mean and instantaneous behaviour for the friction coefficient. This European Standard includes recommendations for production monitoring, including controls to be undertaken on the product and on the material.This European Standard is applicable to composite brake-shoe inserts on rail vehicles which are intended to be fitted to the rail vehicles of the public or private train operating companies.
Bahnwendungen - Bremse - Bremsklotzsohlen
Diese Europäische Norm enthält Anforderungen an Auslegung, Abmessungen, Leistung und Prüfung einer Bremsklotzsohle (auch bekannt als 'Bremsklotz'), die auf die Lauffläche als Teil eines Klotzbremssystems wirkt. Diese Norm behandelt keine Anforderungen an Bremsklotzsohlen aus Gusseisen.
Diese Europäische Norm ist für Bremsklotzsohlen der Reibungsklassen 'K', 'L', oder 'LL' anwendbar, die für den Einbau in Schienenfahrzeuge mit Klotzbremse ausgelegt sind.
Diese Norm enthält die Anforderungen für die Schnittstelle zwischen Bremsklotzsohle und Schienenfahrzeug, die Prüfverfahren zur Bestätigung, dass die grundlegenden Sicherheitsanforderungen und technischen Anfor¬derungen der Austauschbarkeit erfüllt werden, Kontrollverfahren für Werkstoffe zur Sicherstellung der Pro¬duktqualität, Funktionssicherheit und Konformität und berücksichtigt gesundheits- und umweltrelevante Bedürfnisse.
Applications ferroviaires - Freinage - Semelles de frein
La présente Norme Européenne définit les exigences relatives aux semelles de frein pour les freins sur roue du matériel roulant ferroviaire. Pour des raisons environnementales (réduction du bruit de roulement), la présente Norme ne traite pas des exigences des semelles de frein en fonte, bien que la technologie des semelles de frein en fonte soit encore largement utilisée en Europe. La fonte a déjà été remplacée par les matériaux composites pour les nouveaux modèles de matériel roulant et d’importantes mesures ont été prises par la CEE (STI) et l’UIC en 2004 pour accélérer le passage de la fonte aux matériaux composites.
La présente Norme Européenne s’applique aux semelles de frein à coefficient de frottement de niveau « K », « L » ou « LL » conçues pour être montées sur des véhicules ferroviaires à freins sur roue, qu’ils soient utilisés pour le trafic international ou que leur utilisation soit limitée aux réseaux nationaux.
La présente Norme comprend les exigences relatives à l’interface de la semelle de frein avec le véhicule ferroviaire, les modes opératoires d’essai pour confirmer la satisfaction des exigences de base en matière de sécurité et d’interchangeabilité technique, les modes opératoires de contrôle des matériaux pour s’assurer de la qualité, de la fiabilité et de la conformité des produits, ainsi que le respect des exigences sanitaires et environnementales.
Železniške naprave - Zavore - Zavorne ploščice
Ta evropski standard določa zahteve za zavorne ploščice, vključno z zahtevami za vmesnik, ki morajo biti konstrukcijsko izpolnjene, da je zagotovljen pravi torni material, zahtevami glede zmogljivosti, ki jih morajo izpolnjevati priklopniki in vozni park, ter zahtevami komercialnih testiranj in okoljskimi zahtevami, vključno z zahtevami za zmanjšanje hrupa. Ta evropski standard določa raven, odstopanja in povprečne ter takojšnje vedenje količnika trenja. Ta evropski standard zajema priporočila za nadzor proizvodnje, vključno s kontrolami izdelka in materiala. Ta evropski standard velja za kompozitne vstavke zavornih čeljusti pri železniških vozilih, ki so namenjeni namestitvi na železniška vozila javnih ali zasebnih podjetij, ki upravljajo z vlaki.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bahnwendungen - Bremse - BremsklotzsohlenApplications ferroviaires - Freinage - Semelles de freinRailway applications - Braking - Brake blocks45.040Materiali in deli za železniško tehnikoMaterials and components for railway engineeringICS:Ta slovenski standard je istoveten z:EN 16452:2015SIST EN 16452:2015en,fr,de01-september-2015SIST EN 16452:2015SLOVENSKI
STANDARD
SIST EN 16452:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 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 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 CEN-CENELEC 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 CEN-CENELEC Management Centre has the same status 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, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16452:2015 ESIST EN 16452:2015
EN 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 Deviations 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 . 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 characteristics 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 under 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 7.2.8 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 Specific prescriptions for freight wagons . 24 8 Category B requirements . 24 8.1 Vehicle brake test . 24 8.2 Dynamometer wear test (friction couple) . 25 SIST EN 16452:2015
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 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 criteria . 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 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 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 = 120 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 properties 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 SIST EN 16452:2015
EN 16452:2015 (E) 4 E.3 Dispersion range of instantaneous friction coefficients . 58 Annex F (normative)
Composite brake 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 wet 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 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 performance 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)
Composite 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 coefficients 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 (normative)
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 program for High speed train with brake blocks type K . 106 SIST EN 16452:2015
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 wagons 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 brake 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)
Dynamometer 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 blocks 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 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 . 134 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 K . 139 Q.3 Test program for High speed train with brake blocks type K . 140 SIST EN 16452:2015
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 . 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 General . 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 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 . 159 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)
Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC . 166 Bibliography . 169
SIST EN 16452:2015
EN 16452:2015 (E) 7 Foreword This document (EN 16452:2015) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secreta
...
SLOVENSKI STANDARD
kSIST FprEN 16452:2015
01-februar-2015
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Railway applications - Braking - Brake blocks
Bahnwendungen - Bremse - Bremsklotzsohlen
Applications ferroviaires - Freinage - Semelles de frein
Ta slovenski standard je istoveten z: FprEN 16452
ICS:
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
kSIST FprEN 16452:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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kSIST FprEN 16452:2015
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kSIST FprEN 16452:2015
EUROPEAN STANDARD
FINAL DRAFT
FprEN 16452
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2014
ICS 45.040; 45.060.01
English Version
Railway applications - Braking - Brake blocks
Applications ferroviaires - Freinage - Semelles de frein Bahnwendungen - Bremse - Bremsklotzsohlen
This draft European Standard is submitted to CEN members for formal vote. It has been drawn up by the Technical Committee CEN/TC
256.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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 status 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, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprEN 16452:2014 E
worldwide for CEN national Members.
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kSIST FprEN 16452:2015
FprEN 16452:2014 (E)
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 Deviations 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 . 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 characteristics 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 under 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
7.2.8 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 Specific prescriptions for freight wagons . 24
8 Category B requirements . 24
8.1 Vehicle brake test . 24
8.2 Friction couple, wheel tread and brake block wear rate . 25
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FprEN 16452:2014 (E)
8.3 Dynamic friction performance . 25
8.4 In service assessment . 25
9 Category C requirements. 25
9.1 Metal pick 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 criteria . 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 t . 30
s
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 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 (v = 120 km/h) . 33
max
C.1 Program for performance tests: . 33
C.2 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 (v = 120 km/h) . 44
max
D.1 Program for performance tests . 44
D.2 Program for simulation brake assessment . 48
D.3 Dispersion range of mean friction coefficients . 49
D.4 Dispersion range of instantaneous friction coefficients . 52
Annex E (normative) Composite brake blocks (K) (1Bg)– Demonstration of friction properties for
S and SS (S/SS) – braked freight wagons (v = 120 km/h) . 53
max
E.1 Program for performance tests: . 53
E.2 Dispersion range of mean friction coefficients . 56
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E.3 Dispersion range of instantaneous friction coefficients . 58
Annex F (normative) Composite brake 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 wet 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 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 performance 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) Composite 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 coefficients 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 (normative) 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 program for High speed train with brake blocks type K . 106
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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 wagons 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 brake 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) Dynamometer 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 blocks 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 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 . 134
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 K . 139
Q.3 Test program for High speed train with brake blocks type K . 140
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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 . 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 General . 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 back-plate . 155
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 . 157
V.1 General . 157
V.2 Freight wagon . 157
V.3 Coach . 158
V.4 Locomotive . 158
V.5 EMU-DMU . 159
V.6 High speed train .
...
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