SIST EN 17832:2023

Thermal spraying - Determination of the feed rate with spray material in powder form in a production environment

This document describes the procedure for the measurement of the feed rate for thermal spraying with spray materials in powder form in a production environment.
The application of this document is essential if information on the feed rate of a spray material in powder form is required when using a thermal spraying method.
It is applicable to any thermal spraying method using spray materials in powder form (see EN ISO 14917) where the technical installation used allows the spray powder to be fed through without an activated spray gun.
The determination of the feed rate is mandatory for the preparation of thermal spray procedure specifications in accordance with EN 17002 and the determination of the deposition efficiency in accordance with EN ISO 17836.

Thermisches Spritzen - Bestimmung der Förderrate von pulverförmigem Spritzmaterial unter Fertigungsbedingungen

Dieses Dokument legt das Verfahren für die Messung der Förderrate beim thermischen Spritzen mit pulverförmigen Spritzmaterialien unter Produktionsbedingungen fest.
Die Anwendung dieses Dokuments ist von grundlegender Bedeutung, wenn bei Einsatz eines Verfahrens zum thermischen Spritzen Informationen zur Förderrate eines pulverförmigen Spritzmaterials benötigt werden.
Es ist anwendbar für alle Verfahren des thermischen Spritzens mit pulverförmigen Spritzmaterialien (siehe EN ISO 14917), bei denen die verwendete technische Anlage die Zuführung des Spritzpulvers ohne eine aktivierte Spritzpistole ermöglicht.
Die Bestimmung der Förderrate ist für die Vorbereitung der thermischen Spritzanweisungen in Übereinstimmung mit EN 17002 und für die Bestimmung der Auftragrate in Übereinstimmung mit EN ISO 17836 zwingend erforderlich.

Projection thermique - Détermination du débit de matière en projection thermique avec un matériau d’apport sous forme de poudre dans un environnement de production

Le présent document spécifie le mode opératoire de mesurage du débit de matière lorsque la projection thermique est réalisée en utilisant des matériaux d’apport en poudre, dans un environnement de production.
Il est essentiel d’appliquer les dispositions du présent document si la mise en œuvre de la méthode de projection thermique nécessite de disposer d’informations sur le débit de matière d’un matériau d’apport se présentant sous forme de poudre.
Le présent document est applicable à toutes les méthodes de projection thermique utilisant des matériaux d’apport sous forme de poudre (voir l’EN ISO 14917) lorsque l’installation technique utilisée permet d’effectuer l’alimentation en poudre de projection sans actionner de pistolet de projection.
Il est obligatoire de déterminer le débit de matière pour la préparation des spécifications du mode opératoire de projection thermique conformément à l’EN 17002 et pour la détermination du rendement de dépôt selon l'EN ISO 17836.

Vroče brizganje - Ugotavljanje hitrosti dovajanja s pršilom v obliki prahu v proizvodnem okolju

Ta dokument opisuje postopek merjenja hitrosti dovajanja pri vročem brizganju s pršilom v obliki prahu v proizvodnem okolju.
Dokument je treba uporabiti, če so za uporabo metode vročega brizganja zahtevne informacije o hitrosti dovajanja pršila v obliki prahu.
Uporablja se za vse metode vročega brizganja s pršilom v obliki prahu (glej standard EN ISO 14917), pri katerih uporabljena tehnična namestitev omogoča nanos pršila v obliki prahu brez aktivacije razpršilne pištole.
Ugotavljanje hitrosti dovajanja je obvezno pri pripravi specifikacij postopka vročega brizganja v skladu s standardom EN 17002 in ugotavljanju učinkovitosti nanosa za vroče brizganje v skladu s standardom EN ISO 17836.

General Information

• Status: Published
• Public Enquiry End Date: 10-May-2022
• Publication Date: 25-Jun-2023
• ICS: 25.220.20 - Surface treatment
• Technical Committee: IPKZ - Protection of metals against corrosion
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 15-Jun-2023
• Due Date: 20-Aug-2023
• Completion Date: 26-Jun-2023
• Ref Project: EN 17832:2023 - Thermal spraying - Determination of the feed rate with spray material in powder form in a production environment

Overview

SIST EN 17832:2023 is a European standard developed by CEN that specifies the procedure for determining the feed rate of spray materials in powder form used in thermal spraying within a production environment. Thermal spraying is a critical surface treatment process widely used to apply protective and functional coatings on components. Accurate measurement of the powder feed rate plays a pivotal role in ensuring coating quality, process reproducibility, and cost efficiency.

This standard applies to any thermal spraying method employing powder-form spray materials and requires that the measurement be conducted without an activated spray gun. The feed rate measurement is essential for preparing thermal spray procedure specifications (per EN 17002) and establishing deposition efficiency as outlined in EN ISO 17836.

Key Topics

• Scope and Applicability
  SIST EN 17832:2023 covers methods for measuring the spray powder feed rate in industrial thermal spraying setups where powder feeds uninterrupted through the hose to the spray gun injector.

• Terminology and Definitions
  Key terms include feed rate (mass flow rate of powder in g/min), delay time (from powder feed start to outflow start), stabilization time (period until powder flow becomes steady), and rundown time (time for powder outflow to cease after feeder stops).

• Measurement Equipment and Environment

  • Collecting vessel with appropriate volume and filter to capture powder.
  • Use of the same powder injector as used in actual spraying operations.
  • Precision scales with uncertainty ≤ 0.1 g.
  • Stopwatch or timer with uncertainty ≤ 1 second.
  • Safe environment with proper exhaust systems and personal protective equipment.

• Measurement Procedure

  • Manual and automatic methods for feed rate determination are described.
  • Stabilization times for powder flow must be identified and accounted for.
  • Measurement typically involves collecting powder for a minimum of 1 minute post-stabilization.
  • Multiple measurements (at least three) to ensure accuracy, with means calculated and deviations analyzed.

• Data Documentation
  Results are to be recorded in a protocol, such as the one provided in the standard’s annex, ensuring traceability and conformity.

Applications

• Thermal Spray Process Optimization
  Ensuring consistent feed rates improves coating quality and reproducibility across production batches.

• Thermal Spray Procedure Specification (TSPS) Preparation
  Feed rate measurement is mandatory when developing or validating TSPS as per EN 17002, facilitating standardized coating procedures.

• Deposition Efficiency Calculation
  Accurate feed rate data is crucial for calculating deposition efficiency according to EN ISO 17836, impacting material usage and cost analysis.

• Equipment Acceptance and Calibration
  The standard guides acceptance inspections and calibration of powder feed systems under EN 1395-7, supporting reliable equipment performance.

Related Standards

• EN ISO 14917 – Thermal spraying terminology and classification, providing foundational terms related to thermal spray processes.

• EN 17002 – Thermal spray procedure specifications, detailing how to create and document spray procedures.

• EN ISO 17836 – Measurement of deposition efficiency in thermal spraying, closely linked to feed rate determination.

• EN 1395-7 – Acceptance inspection of thermal spraying equipment, specifically for powder feed systems calibration and verification.

Practical Value

Implementing SIST EN 17832:2023 enables thermal spray operators and quality managers to:

• Achieve consistent and reproducible powder feed rates, directly influencing coating performance and durability.
• Systematically document and verify feed rate data, enhancing quality control and process auditing.
• Optimize material consumption and reduce wastage through precise determination of deposition efficiency.
• Comply with European norms, supporting product acceptance in global markets and ensuring safety during powder handling.

By following the standardized measurement procedure, industries such as aerospace, automotive, manufacturing, and energy sectors can improve coating reliability, minimize rework, and enhance overall production efficiency. This standard is fundamental for anyone involved in thermal spraying production environments, providing a robust framework for powder feed rate assessment and control.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2023
Vroče brizganje - Ugotavljanje hitrosti dovajanja s pršilom v obliki prahu v
proizvodnem okolju
Thermal spraying - Determination of the feed rate with spray material in powder form in a
production environment
Thermisches Spritzen - Bestimmung der Förderrate von pulverförmigem Spritzmaterial
unter Fertigungsbedingungen
Projection thermique - Détermination du débit de matière en projection thermique avec
un matériau d’apport sous forme de poudre dans un environnement de production
Ta slovenski standard je istoveten z: EN 17832:2023
ICS:
25.220.20 Površinska obdelava Surface treatment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17832
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2023
EUROPÄISCHE NORM
ICS 25.220.20
English Version
Thermal spraying - Determination of the feed rate with
spray material in powder form in a production
environment
Projection thermique - Détermination du débit de Thermisches Spritzen - Bestimmung der Förderrate
matière en projection thermique avec un matériau von pulverförmigem Spritzmaterial unter
d'apport sous forme de poudre dans un environnement Fertigungsbedingungen
de production
This European Standard was approved by CEN on 30 April 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 17832:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Auxiliary materials . 6
4.1 Collecting vessel . 6
4.2 Powder injector . 7
4.3 Scales . 7
4.4 Stopwatch . 7
5 Preparation measurement . 7
5.1 Guidelines . 7
5.2 Determination of the time for stabilization of the powder flow . 7
6 Measurement procedure . 7
6.1 Manual measurement of the feed rate . 7
6.2 Measurement using a collecting vessel attached by fixing connection . 8
6.3 Repeating of measurement . 8
6.4 Automatic measurement of the feed rate . 8
7 Documentation . 9
Annex A (informative) Protocol for feed rate determination . 10
Bibliography . 11
European foreword
This document (EN 17832:2023) has been prepared by 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 December 2023, and conflicting national standards shall
be withdrawn at the latest by December 2023.
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.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.
Introduction
The feed rate for thermal spraying with spray materials in powder form is a process parameter having
substantial impact on the quality of a coating and also on the cost efficiency of the coating process.
Although the determination of feed rate is one of the most frequently done measurements in thermal
spraying, the performance of the measurement often differs in coating shops, leading to problems with
respect to the following tasks:
— reaching the required coating quality in a reproducible manner;
— preparation of thermal spray procedure specifications in accordance with EN 17002;
— determination of the deposition efficiency for thermal spraying in accordance with EN ISO 17836;
— acceptance of the feed system in accordance with EN 1395-7.
The document gives guidance for the procedure of measurement.
1 Scope
This document specifies the procedure for the measurement of the feed rate for thermal spraying with
spray materials in powder form in a production environment.
The application of this document is essential if information on the feed rate of a spray material in powder
form is required when using a thermal spraying method.
It is applicable to any thermal spraying method using spray materials in powder form (see EN ISO 14917)
where the technical installation used allows the spray powder to be fed through without an activated
spray gun.
The determination of the feed rate is mandatory for the preparation of thermal spray procedure
specifications in accordance with EN 17002 and the determination of the deposition efficiency in
accordance with EN ISO 17836.
2 Normative references
The following documents are re
...