EN ISO 14920:2023

SLOVENSKI STANDARD
01-november-2023
Vroče brizganje (metalizacija) - Taljenje in brizganje - Vroče nanašanje samotaljivih
zlitin (ISO 14920:2023)
Thermal spraying - Spraying and fusing of self-fluxing alloys (ISO 14920:2023)
Thermisches Spritzen - Spritzen und Einschmelzen von selbstfließenden Legierungen
(ISO 14920:2023)
Projection thermique - Projection et fusion d'alliages autofondants (ISO 14920:2023)
Ta slovenski standard je istoveten z: EN ISO 14920:2023
ICS:
25.220.20 Površinska obdelava Surface treatment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 14920
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2023
EUROPÄISCHE NORM
ICS 25.220.20 Supersedes EN ISO 14920:2015
English Version
Thermal spraying - Spraying and fusing of self-fluxing
alloys (ISO 14920:2023)
Projection thermique - Projection et fusion d'alliages Thermisches Spritzen - Spritzen und Einschmelzen von
autofondants (ISO 14920:2023) selbstfließenden Legierungen (ISO 14920:2023)
This European Standard was approved by CEN on 22 August 2023.

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, 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, Türkiye 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14920:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 14920:2023) has been prepared by Technical Committee ISO/TC 107 "Metallic
and other inorganic coatings" in collaboration with Technical Committee CEN/TC 240 “Thermal
spraying and thermally sprayed coatings” 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 March 2024, and conflicting national standards shall
be withdrawn at the latest by March 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 14920:2015.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European 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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 14920:2023 has been approved by CEN as EN ISO 14920:2023 without any modification.

INTERNATIONAL ISO
STANDARD 14920
Third edition
2023-08
Thermal spraying — Spraying and
fusing of self-fluxing alloys
Projection thermique — Projection et fusion d'alliages autofondants
Reference number
ISO 14920:2023(E)
ISO 14920:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 14920:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Influence on the substrate and design . 1
4.1 Substrate . 1
4.2 Design . 2
5 Spray material of the self-fluxing alloy . 2
5.1 Selection . 2
5.2 Composition . 2
6 Preparation of the component . 2
6.1 General . 2
6.1.1 Surface cleanliness . 2
6.1.2 Removal of prior surface treatments . 2
6.1.3 Pre-machining requirements . 3
6.1.4 Surface preparation requirements . 3
6.2 Methods of surface preparation . 3
6.2.1 Surface preparation requirements . 3
6.2.2 Surface preparation inspection . 3
6.2.3 General masking of surface preparation . 3
6.2.4 Plug masking for surface preparation . 3
6.3 Cleanliness . 3
7 Spray and fusion process .4
7.1 Spraying with simultaneous fusion . 4
7.1.1 Procedure . 4
7.1.2 Particle size and particle size range of the powder particles . 4
7.1.3 Coating thickness . 4
7.2 Spraying with subsequent fusion. 4
7.2.1 Procedure . 4
7.2.2 Particle size and particle size range of the powder particles . 4
7.2.3 Coating thickness . 5
7.3 Spraying technique — Procedure . 5
7.3.1 General . 5
7.3.2 Preheating . 5
7.3.3 Spraying . 5
7.3.4 Fusing the deposit . 5
7.3.5 Cooling . 6
8 Final machining . 6
9 Hardness testing . 6
9.1 General . 6
9.2 Standard hardness test . 6
Annex A (informative) Reference values for the expected hardness of the fused coating .8
Bibliography . 9
iii
ISO 14920:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures u
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