EN 1274:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Thermisches Spritzen - Pulver - Zusammensetzung, technische LieferbedingungenProjection thermique - Poudres - Composition, conditions techniques de livraisonThermal spraying - Powders - Composition, technical supply conditions77.160Metalurgija prahovPowder metallurgy25.220.20Površinska obdelavaSurface treatmentICS:Ta slovenski standard je istoveten z:EN 1274:2004SIST EN 1274:2004en01-december-2004SIST EN 1274:2004SLOVENSKI
STANDARDSIST EN 1274:19991DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1274November 2004ICS 25.220.20; 77.160Supersedes EN 1274:1996
English versionThermal spraying - Powders - Composition, technical supplyconditionsProjection thermique - Poudres - Composition, conditionstechniques de livraisonThermisches Spritzen - Pulver - Zusammensetzung,technische LieferbedingungenThis European Standard was approved by CEN on 13 September 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1274:2004: ESIST EN 1274:2004

Powder shape and morphologies.19
Introduction The document has been aimed to designate the most important thermal spray-coating powders on the basis of their composition, their manufacturing process and their particle size distribution. The majority of commercially available powders is covered by and can be characterised and specified according to this document. The document is meant to simplify understanding of the great product variety on the market for the manufacturer and user, and nevertheless offer a vast choice. Due to the number of the spray powders referred to in this document, in some cases abbreviations are used. Exception is granted to details on the properties of sprayed coatings. Such properties resulting from spraying conditions not covered by this document, e.g. gas composition, deposition efficiency, material flow rate, stand off distance, etc., can differ greatly from the properties of the original powder. Applications of powders for thermal spraying have been explicitly described in the relevant literature; therefore, a separate outline in this place is not necessary. SIST EN 1274:2004

Key x Particle size in µm y Mass in % Figure 1 — Typical size distribution 63/16 µm 3.4 Manufacturing process – particle shape The manufacturing process of powder shall be indicated. Using a term such as, for instance, fusing, sintering, agglomeration atomisation. The particle shape and its surface can be illustrated by means of scanning electron or stereo microscopy. In order to check for similarity the images can be compared to reference samples provided by the manufacturer. Example Figures are included in Annex A. 3.5 Apparent density Apparent powder density shall be determined as specified in EN 23923-2, and to be expressed as g/cm3. 3.6 Flowability The determination of the flowability of free flowing powders shall be effected according to EN ISO 4490 and expressed as s/50 g. As especially fine powders with a low specific weight are often not able to flow, it is not possible to determine the flowability in these cases. The results of the measurements of apparent density and flowability are determined by several properties of material and powder, as e.g. specific weight of the material, particle shape and structure of the powder particle SIST EN 1274:2004
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