CEN/TS 15427-2-2:2021

SLOVENSKI STANDARD
01-marec-2021
Železniške naprave - Trenje na stiku kolo-tirnica - 2-2. del: Lastnosti in
karakteristike - Materiali za zgornjo površino tirnic
Railway applications - Wheel/Rail friction management - Part 2-2: Properties and
Characteristics - Top of Rail materials
Bahnanwendungen - Reibungsmanagement zwischen Rad und Schiene - Teil 2-2:
Eigenschaften und Merkmale - Behandlung der Schienenoberfläche
Applications ferroviaires - Gestion de la friction rail/roue - Partie 2-2 : Propriétés et
caractéristiques - Matériaux de la surface du rail
Ta slovenski standard je istoveten z: CEN/TS 15427-2-2:2021
ICS:
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
45.080 Tračnice in železniški deli Rails and railway
components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 15427-2-2
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
January 2021
TECHNISCHE SPEZIFIKATION
ICS 45.080; 45.120
English Version
Railway applications - Wheel/Rail friction management -
Part 2-2: Properties and Characteristics - Top of Rail
materials
Applications ferroviaires - Gestion des frottements Bahnanwendungen - Reibungsmanagement zwischen
roue/rail - Partie 2-2 : Propriétés et caractéristiques - Rad und Schiene - Teil 2-2: Eigenschaften und
Lubrifiants de tête de rail Merkmale - Behandlung der Schienenoberfläche
This Technical Specification (CEN/TS) was approved by CEN on 23 November 2020 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of 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, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15427-2-2:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Material requirements . 10
5 General requirements . 10
5.1 Introduction . 10
5.2 Product specification . 10
5.3 Technical file . 11
6 Control and monitoring of product . 11
6.1 Manufacturing process . 11
6.2 Composition of material . 11
6.3 Routine tests . 11
6.4 Additional measures . 11
7 Technical datasheet . 11
7.1 General. 11
7.2 Grease type material characteristics . 12
7.3 Liquid type material characteristics . 12
7.4 Solid type material characteristics . 12
8 Tests . 12
8.1 Explanation of Annex A: Tables A.1 to A.4 . 12
8.2 Key to Annex A table columns . 12
8.3 Key to Annex A table column ‘Use’ . 13
9 Packaging, labelling and storage . 13
Annex A (normative) Requirements for top of rail materials and testing . 14
Annex B (informative) Determination of the volatile constituents in greases . 21
B.1 Purpose . 21
B.2 Short description . 21
B.3 Conditions for testing . 21
B.3.1 Test conditions . 21
B.3.2 Required testing and measuring equipment . 21
B.4 Test process . 21
B.4.1 Preparation of test . 21
B.4.2 Performance of test . 22
B.4.3 Evaluation . 22
B.5 Recording of test results. 22
Annex C (informative) Functional test on specific equipment . 23
C.1 General . 23
C.2 Sprayability of liquid TOR materials . 23
C.2.1 Purpose . 23
C.2.2 Short description . 23
C.2.3 Conditions for testing . 23
C.2.4 Test process . 24
Annex D (informative) Twin-disc machine Retentivity and Coefficient of Traction test . 25
D.1 Purpose . 25
D.2 Description . 25
D.3 Conditions for test . 25
D.3.1 Test conditions . 25
D.3.2 Twin discs . 25
D.3.3 Performance of the Test . 26
D.3.4 Evaluation of the Test. 26
Annex E (informative) Twin-disc machine test for determining Creep force vs Creep rate curve
(for solid sticks comparable to MTM machine test). 28
E.1 Purpose . 28
E.2 Description . 28
E.3 Conditions for test . 29
E.3.1 Test conditions . 29
E.3.2 Twin discs . 29
E.3.3 Test Process Example . 29
E.3.4 Evaluation of the Test. 30
Annex F (informative) MTM machine creep curve test . 32
F.1 General . 32
F.1.1 Purpose . 32
F.1.2 Description . 32
F.2 Test equipment. 32
F.3 Application of TOR material to metal disk . 33
F.4 Performance of the Test . 35
F.5 Evaluation of the Test. 36
Bibliography . 37

European foreword
This document (CEN/TS 15427-2-2:2021) has been prepared by Technical Committee CEN/TC 256
“Railway applications”, the secretariat of which is held by DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not
...