SIST EN ISO 15614-7:2007
(Main)Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 7: Overlay welding (ISO 15614-7:2007)
Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 7: Overlay welding (ISO 15614-7:2007)
This part of ISO 15614 specifies how a preliminary welding pro cedure specification for overlay welding is qualified by weldi ng procedure tests. This part of ISO 15614 defines the conditi ons for carrying out welding procedure tests and the range of qualification for welding procedures for all practical welding operations within the range of variables listed in Clause 8. Additional tests may be required by application standards. Thi s part of ISO 15614 applies to all welding processes suitable for overlay welding. This part of ISO 15614 is applicable to a ll new welding procedures. However, it does not invalidate pre vious welding procedure tests made to former national standard s or specifications. Where additional tests are carried out to make the qualification technically equivalent, they are only done on a test piece made in accordance with this part of ISO 15614. This part of ISO 15614 does not apply to overlay weldin g where cracks are intentionally produced (e.g. special hardfa cing applications).
Anforderung und Qualifizierung von Schweißverfahren für metallische Werkstoffe - Schweißverfahrensprüfung - Teil 7: Auftragschweißen (ISO 15614-7:2007)
Diese Norm ist Teil einer Normenreihe. Einzelheiten dieser Normenreihe sind in EN ISO 15607:2003, Anhang A, angegeben.
Diese Norm legt fest, wie eine vorläufige Schweißanweisung für das Auftragschweißen durch Schweißverfahrensprüfungen qualifiziert wird.
Diese Norm definiert die Bedingungen für die Durchführung der Schweißverfahrensprüfungen und den Geltungsbereich für Schweißverfahren für alle praktischen schweißtechnischen Tätigkeiten innerhalb des Bereiches der Einflussgrößen nach Abschnitt 8.
Die Prüfungen sind nach dieser Norm durchzuführen. Zusätzliche Prüfungen dürfen durch Anwendungsnormen gefordert werden.
Diese Norm wird angewendet bei allen Schweißverfahren, die für das Auftragschweißen geeignet sind. Die Grundsätze dieser Norm können für andere Anwendungen benutzt werden, falls in der Konstruktionsvorgabe gefordert.
Das Auftragschweißen kann mit allen in EN ISO 4063 aufgeführten Schweißprozessen durchgeführt werden:
- 111 Lichtbogenhandschweißen;
- 12 Unterpulverschweißen;
- 131 Metall-Inertgasschweißen; MIG-Schweißen;
- 135 Metall-Aktivgasschweißen; MAG-Schweißen;
- 136 Metall-Aktivgasschweißen mit Fülldrahtelektrode;
- 141 Wolfram-Inertgasschweißen; WIG-Schweißen;
- 15 Plasmaschweißen;
- 311 Gasschweißen mit Sauerstoff-Acetylen-Flamme;
- 51 Elektronenstrahlschweißen;
- 52 Laserstrahlschweißen;
- 72 Elektroschlackeschweißen.
Die Grundsätze dieser Norm dürfen bei anderen Schmelzschweißprozessen angewendet werden.
Diese Norm gilt nicht für Auftragschweißungen mit dem Ziel, Schweißauflagen mit absichtlichen Rissbildungen zu erzeugen (z. B. bei speziellen Hartauftragungen).
Descriptif et qualification d'un mode opératoire de soudage pour les matériaux métalliques - Epreuve de qualification d'un mode opératoire de soudage - Partie 7: Rechargement par soudage (ISO 15614-7:2007)
L'ISO 15614-7:2007 spécifie comment un descriptif de mode opératoire de rechargement par soudage préliminaire est qualifié par une épreuve.
L'ISO 15614-7:2007 définit les conditions d'exécution des épreuves de qualification de mode opératoire de soudage et le domaine de validité du mode opératoire de soudage, pour toutes les opérations pratiques de soudage englobant la liste des variables mentionnées à l'Article 8.
Des contrôles, examens et essais complémentaires peuvent être exigés par des normes d'application.
L'ISO 15614-7:2007 s'applique à tous les procédés de soudage utilisables pour le rechargement par soudage.
L'ISO 15614-7:2007 est applicable à tous les nouveaux modes opératoires de soudage. Toutefois, elle n'invalide pas les qualifications de modes opératoires de soudage existantes, exécutées à partir de spécifications ou normes nationales. Si des contrôles, examens et essais complémentaires sont à effectuer pour obtenir une qualification techniquement équivalente, il est seulement nécessaire d'effectuer ces contrôles, examens et essais complémentaires sur un assemblage de qualification qu'il convient d'exécuter conformément à l'ISO 15614-7:2007.
L'ISO 15614-7:2007 ne s'applique pas au rechargement par soudage pour lequel des méthodes provoquant une fissuration sont nécessaires pour l'application du produit (par exemple applications spéciales de rechargement dur).
Popis in kvalifikacija varilnih postopkov za kovinske materiale - Preskus varilnega postopka - 7. del: Navarjanje (ISO 15614-7:2007)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 15614-7:2007
01-september-2007
Popis in kvalifikacija varilnih postopkov za kovinske materiale - Preskus varilnega
postopka - 7. del: Navarjanje (ISO 15614-7:2007)
Specification and qualification of welding procedures for metallic materials - Welding
procedure test - Part 7: Overlay welding (ISO 15614-7:2007)
Anforderung und Qualifizierung von Schweißverfahren für metallische Werkstoffe -
Schweißverfahrensprüfung - Teil 7: Auftragschweißen (ISO 15614-7:2007)
Descriptif et qualification d'un mode opératoire de soudage pour les matériaux
métalliques - Epreuve de qualification d'un mode opératoire de soudage - Partie 7:
Rechargement par soudage (ISO 15614-7:2007)
Ta slovenski standard je istoveten z: EN ISO 15614-7:2007
ICS:
25.160.10
SIST EN ISO 15614-7:2007 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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EUROPEAN STANDARD
EN ISO 15614-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2007
ICS 25.160.10
English Version
Specification and qualification of welding procedures for metallic
materials - Welding procedure test - Part 7: Overlay welding
(ISO 15614-7:2007)
Descriptif et qualification d'un mode opératoire de soudage Anforderungen und Qualifizierung von Schweißverfahren
pour les matériaux métalliques - Épreuve de qualification für metallische Werkstoffe - Schweißverfahrensprüfung -
d'un mode opératoire de soudage - Partie 7: Rechargement Teil 7: Auftragschweißen (ISO 15614-7:2007)
par soudage (ISO 15614-7:2007)
This European Standard was approved by CEN on 21 May 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15614-7:2007: E
worldwide for CEN national Members.
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EN ISO 15614-7:2007 (E)
Foreword
This document (EN ISO 15614-7:2007) has been prepared by Technical Committee CEN/TC 121
"Welding", the secretariat of which is held by DIN, in collaboration with Technical Committee
ISO/TC 44 "Welding and allied processes".
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 2007, and conflicting national
standards shall be withdrawn at the latest by December 2007.
This document has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
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,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
2
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EN ISO 15614-7:2007 (E)
ANNEX ZA
(informative)
Relationship between this International Standard and the Essential
Requirements of EU Directive 97/23/EC
This International Standard has been prepared under a mandate given to CEN by the European
Commission and the European Free Trade Association to provide one means of conforming to
Essential Requirements of the New Approach Directive 97/23/EC.
Once this standard is cited in the Official Journal of the European Communities under that Directive
and has been implemented as a national standard in at least one Member State, compliance with
the normative clauses of this standard given in Table ZA.1 confers, within the limits of the scope of
this standard, a presumption of conformity with the corresponding Essential Requirements of that
Directive and associated EFTA regulations.
Table ZA.1 — Correspondence between this International Standard and Directive 97/23/EC
Clause(s)/sub-clause(s) of Essential Requirements (ERs) Qualifying remarks/Notes
this International Standard of Directive 97/23/EC
Normative Clauses 3 to 9 Annex I, 3.1.2 Permanent joining
WARNING: Other requirements and other EU Directives may be applicable to the product(s) falling
within the scope of this standard.
3
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INTERNATIONAL ISO
STANDARD 15614-7
First edition
2007-06-15
Specification and qualification of welding
procedures for metallic materials —
Welding procedure test —
Part 7:
Overlay welding
Descriptif et qualification d'un mode opératoire de soudage pour les
matériaux métalliques — Épreuve de qualification d'un mode opératoire
de soudage —
Partie 7: Rechargement par soudage
Reference number
ISO 15614-7:2007(E)
©
ISO 2007
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ISO 15614-7:2007(E)
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ii © ISO 2007 – All rights reserved
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ISO 15614-7:2007(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Preliminary welding procedure specification (pWPS) . 2
4.1 Overlay welding . 2
4.2 Hardfacing . 2
4.3 Building-up . 3
4.4 Buttering . 3
5 Welding procedure test. 3
6 Test piece . 3
6.1 Shape and dimensions of test pieces. 3
6.2 Welding of test pieces. 5
7 Examination and testing . 6
7.1 Extent of testing. 6
7.2 Non-destructive testing (NDT). 6
7.3 Location and taking of test specimens . 6
7.4 Destructive testing. 8
7.5 Acceptance criteria. 10
7.6 Retesting. 11
8 Range of qualification . 11
8.1 General. 11
8.2 Qualification related to the manufacturer . 11
8.3 Qualification related to the material. 12
8.4 Qualification related to the filler material/overlay . 13
8.5 Common to welding procedures. 14
8.6 Specific to welding processes . 15
9 Welding procedure qualification record (WPQR) . 17
Annex A (informative) Welding procedure qualification record form (WPQR) . 18
Bibliography . 21
© ISO 2007 – All rights reserved iii
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ISO 15614-7:2007(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 15614-7 was prepared by the European Committee for Standardization (CEN) Technical Committee
CEN/TC 121, Welding, in collaboration with Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 10, Unification of requirements in the field of metal welding, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
ISO 15614 consists of the following parts, under the general title Specification and qualification of welding
procedures for metallic materials — Welding procedure test:
⎯ Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys
⎯ Part 2: Arc welding of aluminium and its alloys
⎯ Part 3: Fusion and pressure welding of non-alloyed and low-alloyed cast irons
⎯ Part 4: Finishing welding of aluminium castings
⎯ Part 5: Arc welding of titanium, zirconium and their alloys
⎯ Part 6: Arc and gas welding of copper and its alloys
⎯ Part 7: Overlay welding
⎯ Part 8: Welding of tubes to tube-plate joints
⎯ Part 10: Hyperbaric dry welding
⎯ Part 11: Electron and laser beam welding
⎯ Part 12: Spot, seam and projection welding
⎯ Part 13: Resistance butt and flash welding
Requests for official interpretations of any aspect of this part of ISO 15614 should be directed to the
Secretariat of ISO/TC 44/SC 10 via your national standards body. A complete listing of these bodies can be
found at www.iso.org.
iv © ISO 2007 – All rights reserved
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ISO 15614-7:2007(E)
Introduction
This part of ISO 15614 is part of a series of standards. Details of this series are given in ISO 15607:2003,
Annex A.
Previous procedure qualifications to former national standards or specifications should be taken into
consideration at the time of the enquiry or contract stage and agreed between the contracting parties.
© ISO 2007 – All rights reserved v
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INTERNATIONAL STANDARD ISO 15614-7:2007(E)
Specification and qualification of welding procedures for
metallic materials — Welding procedure test —
Part 7:
Overlay welding
1 Scope
This part of ISO 15614 specifies how a preliminary welding procedure specification for overlay welding is
qualified by welding procedure tests.
This part of ISO 15614 defines the conditions for carrying out welding procedure tests and the range of
qualification for welding procedures for all practical welding operations within the range of variables listed in
Clause 8.
Additional tests may be required by application standards.
This part of ISO 15614 applies to all welding processes suitable for overlay welding.
This part of ISO 15614 is applicable to all new welding procedures. However, it does not invalidate previous
welding procedure tests made to former national standards or specifications. Where additional tests are
carried out to make the qualification technically equivalent, they are only done on a test piece made in
accordance with this part of ISO 15614.
This part of ISO 15614 does not apply to overlay welding where cracks are intentionally produced (e.g. special
hardfacing applications).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references the latest edition of the referenced
document (including any amendments) applies.
ISO 3452, Non destructive testing — Penetrant inspection — General principles
ISO 5173, Destructive tests on welds in metallic materials — Bend tests
ISO 6947, Welds — Working positions — Definitions of angles of slope and rotation
ISO 9015-1, Destructive tests on welds in metallic materials — Hardness testing — Part 1: Hardness test on
arc welded joints
ISO 14174, Welding consumables — Fluxes for submerged arc welding — Classification
ISO 14175, Welding consumables — Shielding gases for arc welding and cutting
ISO/TR 15608, Welding — Guidelines for a metallic materials grouping system
© ISO 2007 – All rights reserved 1
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ISO 15614-7:2007(E)
ISO 15609-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 1: Arc welding
ISO 15609-2, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 2: Gas welding
ISO 15609-3, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 3: Electron beam welding
ISO 15609-4, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 4: Laser beam welding
ISO 15613, Specification and qualification of welding procedures for metallic materials — Qualification based
on pre-production welding test
ISO 15614-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys
ISO 17637, Non-destructive testing of welds — Visual testing of fusion-welded joints
ISO 17639, Destructive tests on welds in metallic materials — Macroscopic and microscopic examination of
welds
ISO 17640, Non-destructive testing of welds — Ultrasonic testing of welded joints
1)
ISO/TR 25901 , Welding and related processes — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/TR 25901 apply.
4 Preliminary welding procedure specification (pWPS)
4.1 Overlay welding
The pWPS shall be in accordance with ISO 15609-1, ISO 15609-3 and ISO 15609-4. It shall specify the
tolerances for all the relevant parameters.
The welding procedure shall be qualified in accordance with Clauses 5 to 8.
4.2 Hardfacing
The pWPS shall be in accordance with ISO 15609-1, ISO 15609-2, ISO 15609-3 and ISO 15609-4. It shall
specify the tolerances for all the relevant parameters.
The welding procedure shall be qualified in accordance with Clauses 5 to 8.
1) To be published (revision of CEN/TR 14599).
2 © ISO 2007 – All rights reserved
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ISO 15614-7:2007(E)
4.3 Building-up
The pWPS shall be in accordance with ISO 15609-1. It shall specify the tolerances for all the relevant
parameters.
The welding procedure shall be qualified in accordance with ISO 15613 or ISO 15614-1 and Clauses 5 to 8.
4.4 Buttering
The pWPS shall be in accordance with ISO 15609-1. It shall specify the tolerances for all the relevant
parameters.
If buttering is used for welding between dissimilar materials, the welding procedure shall be qualified in
accordance with ISO 15614-1.
If buttering is used to produce a metallurgically compatible weld metal between the parent material and
overlay welding or hardfacing, the welding procedure shall be qualified in accordance with ISO 15614-1 and
Clauses 5 to 8.
5 Welding procedure test
A test piece shall be welded using the same welding processes as the ones to be used in production
(e.g. strip overlay welding + manual metal arc overlay welding with covered electrode).
The welding and testing of test pieces shall be in accordance with Clauses 6 and 7.
6 Test piece
6.1 Shape and dimensions of test pieces
6.1.1 General
The welding procedure test shall be carried out on standardized test piece(s) in accordance with Figures 1
and 2, and 6.2. Parent material(s) shall be used which represent the material(s) to be welded in production.
The dimensions and/or number of test pieces shall be sufficient to allow all required tests to be carried out
(see Figures 1 and 2).
The thickness and/or diameter of the test pieces shall be selected in accordance with the range of qualification.
6.1.2 Overlay welding and hardfacing
A minimum of three beads for the last layer is required.
6.1.3 Buffer layer
If a buffer layer is used in production welding, it shall be used in welding the test piece.
© ISO 2007 – All rights reserved 3
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ISO 15614-7:2007(E)
Dimensions in millimetres
Key
1 buttering layer, if necessary
2 number of layers in accordance with the pWPS (see 6.1.2) or thickness of overlay deposit
3 welding direction
t parent material thickness
Figure 1 — Test piece — Plate
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ISO 15614-7:2007(E)
Dimensions in millimetres
a) Axial overlay welding — External c) Circumferential overlay welding — External
b) Axial overlay welding — Internal d) Circumferential overlay welding — Internal
Key
1 buttering layer, if necessary
2 welding direction
3 number of layers in accordance with the pWPS (see 6.1.2 and 6.1.3)
D outside diameter of tube
e
D inside diameter of tube
i
t parent material thickness
Figure 2 — Test piece — Tube
6.2 Welding of test pieces
Preparation and welding of test pieces shall be carried out in accordance with the pWPS and under the
general conditions in production that they shall represent.
Welding and testing of the test pieces shall be witnessed by an examiner or an examining body.
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ISO 15614-7:2007(E)
7 Examination and testing
7.1 Extent of testing
Testing includes both non-destructive testing (NDT) and destructive testing which shall be in accordance with
the requirements of Table 1.
Table 1 — Examination and testing of the test pieces
Test piece Type of test Extent of testing Footnote
Overlay welding Visual testing 100 % –
a
Ultrasonic testing 100 %
Surface crack detection 100 % b
Side bend test 2 specimens c
Macroscopic examination 1 specimen –
Microscopic examination 1 specimen d
Chemical analysis 1 specimen –
Delta ferrite content/ferrite number-FN 1 specimen a
Hardness testing 1 survey d
Hardfacing Visual testing 100 % –
b
Surface crack detection 100 %
Macroscopic examination 1 specimen –
Hardness testing 1 survey –
d
Microscopic examination 1 specimen
a
If required, in accordance with the application standard.
b
Penetrant testing or magnetic particle testing. For non-magnetic materials, penetrant testing.
c
Side bend test may be replaced by ultrasonic testing (UT) plus two additional macroscopic examinations.
d
Not required for material of group 1.
7.2 Non-destructive testing (NDT)
All NDT in accordance with 7.1 and Table 1 shall be carried out on the test pieces prior to cutting of the test
specimens. Any post-weld heat treatment that is specified shall be completed prior to NDT.
Depending on overlay geometry, materials and the production specification, NDT shall be carried out in
accordance with ISO 17637 (visual examination), ISO 3452 (penetrant testing) and ISO 17640 [ultrasonic
testing (UT)].
The acceptance criteria stated in 7.5.1 shall apply.
7.3 Location and taking of test specimens
Test specimens shall be taken in accordance with Figures 3 and 4.
Tests specimens shall be taken after all NDT has been carried out and they have passed the relevant
inspection criteria for the NDT method(s) used.
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ISO 15614-7:2007(E)
It is acceptable to take the test specimens from locations that avoid areas which have imperfections within the
acceptance limits for the NDT method(s) used.
Key
1 Discard W 25 mm of deposited metal
2 Area for:
— 1 side bend test specimen
3 Area for:
— 1 macro test specimen
— chemical analysis, ferrite number
— 1 micro test specimen with hardness test
— retest
4 Area for:
— 1 side bend test specimen
5 Welding direction
Figure 3 — Location of test specimens for overlay welding on plate
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ISO 15614-7:2007(E)
a) Axial deposit b) Circumferential deposit
Key
1 Discard W 25 mm of deposited metal
2 Area for:
— 1 side bend test specimen (see Table 1)
3 Area for:
— 1 macro test specimen
— chemical analysis, ferrite number, if required by the application standard
— 1 micro test specimen with hardness test
— retest
4 Area for:
— 1 side bend test specimen (see Table 1)
5 Welding direction
Figure 4 — Location of tests specimens for overlay welding on tubes
7.4 Destructive testing
7.4.1 General
The extent of testing shall be as required by Table 1.
7.4.2 Macro/microscopic examination
The test specimen shall be prepared and etched in accordance with ISO 17639 on one side in order to reveal
clearly the fusion line, the heat-affected zone (HAZ) and the building-up of the layers.
The macroscopic examination shall include unaffected parent material and shall be recorded by taking at least
one macro specimen per procedure test.
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ISO 15614-7:2007(E)
When microscopic examination is required (see Table 1), a macro specimen of the parent material and of the
transition to the parent material (heat-affected zone) and the overlay shall be taken.
The acceptance levels stated in 7.5.2.1 and 7.5.2.2 shall apply.
7.4.3 Hardness testing
Vickers hardness testing with a load of Vickers number HV 10 or HV 5 shall be carried out in accordance with
ISO 9015-1. Hardness indentations shall be made as shown in Figure 5. The results of the hardness testing
shall be in accordance with 7.5.2.3.
In all cases, a hardness traverse shall be made at an angle of 15° to the surface including the overlay, heat-
affected zone (HAZ) and the parent material.
For hardfacing, a minimum of five indentations shall be made on the machined surface of the test piece. Since
surface hardness is a function of the thickness of the surfacing, these results should be recorded for
information.
Key
1 buffer layer
Figure 5 — Hardness traverse for overlay
7.4.4 Side bend testing
Test specimens and testing shall be in accordance with ISO 5173.
The diameter of the former or the inner roller shall be 4t and the bending angle shall be 120° for weld metal
with an elongation of A W 20 %. For weld metal with an elongation of A < 20 %, the following formula shall be
applied:
100×t
()
s
dt=−
s
A
where
d is the maximum diameter of the former or the inner roller;
t is the thickness of the bend test specimen;
s
A is the minimum tensile elongation required by the manufacturer material specification.
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ISO 15614-7:2007(E)
7.4.5 Chemical analysis
For corrosion-resistant cladding, the chemical composition shall be determined in accordance with the
application standard and/or the specification. If the corrosion-resistant cladding is to be machined in
production, an additional chemical analysis shall be carried out in the area of the minimum thickness after
machining (see Figure 6).
7.4.6 Delta ferrite content/ferrite number (FN)
When required, the delta ferrite content/ferrite number (FN) shall be determined in accordance with the
applicable standard and/or specification.
7.5 Acceptance criteria
7.5.1 Non-destructive testing
7.5.1.1 Visual examination
Cracks and other planar defects are not permitted.
NOTE Small individual cracks can be accepted in the case of overlay welding with cobalt alloys.
Surface pores u 2 mm are permitted unless otherwise specified (e.g. in severe corrosion conditions).
7.5.1.2 Surface crack detection
Linear indications are not permitted.
7.5.1.3 Ultrasonic testing
Any imperfection giving a signal greater than that obtained from an 8 mm diameter flat-bottom hole is not
permitted.
7.5.2 Destructive tests
7.5.2.1 Macroscopic examination
Cracks and other planar defects are not permitted.
Individual pores greater than 2 mm are not permit
...
SLOVENSKI OSIST prEN ISO 15614-7:2004
PREDSTANDARD
november 2004
Specification and qualification of welding procedures for metallic materials -
Welding procedure test - Part 7: Overlay welding (ISO/DIS 15614-7:2004)
ICS 25.160.10 Referenčna številka
OSIST prEN ISO 15614-7:2004(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD
DRAFT
prEN ISO 15614-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2004
ICS
English version
Specification and qualification of welding procedures for metallic
materials - Welding procedure test - Part 7: Overlay welding
(ISO/DIS 15614-7:2004)
Descriptif et qualification d'un mode opératoire de soudage
pour les matériaux métalliques - Epreuve de qualification
d'un mode opératoire de soudage - Partie 7: Rechargement
par soudage (ISO/DIS 15614-7:2004)
This draft European Standard is submitted to CEN members for parallel enquiry. It has been drawn up by the Technical Committee
CEN/TC 121.
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 Management Centre has the same
status as the official versions.
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.
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
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN ISO 15614-7:2004: E
worldwide for CEN national Members.
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prEN ISO 15614-7:2004 (E)
Foreword
This document (prEN ISO 15614-7:2004) has been prepared by Technical Committee
CEN/TC 121 "Welding", the secretariat of which is held by DIN, in collaboration with Technical
Committee ISO/TC 44 "Welding and allied processes".
This document is currently submitted to the parallel Enquiry.
This document has been prepared under a mandate given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements
of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of
this document.
2
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prEN ISO 15614-7:2004 (E)
ANNEX ZA
(informative)
Relationship between this European Standard and the
Essential Requirements of EU Directive 97/23 EEC
This European Standard has been prepared under a mandate given to CEN by the European
Commission and the European Free Trade Association to provide a means of conforming to
Essential Requirements of the New Approach Directive 97/23 EEC.
Once this standard is cited in the Official Journal of the European Communities under that
Directive and has been implemented as a national standard in at least one Member State,
compliance with the normative clauses of this standard given in Table ZA. confers, within the
limits of the scope of this standard, a presumption of conformity with the corresponding
Essential Requirements of that Directive and associated EFTA regulations.
WARNING: Other requirements and other EU Directives may be applicable to the product(s)
falling within the scope of this standard.
3
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DRAFT INTERNATIONAL STANDARD ISO/DIS 15614-7
ISO/TC 44/SC 10 Secretariat: DIN
Voting begins on: Voting terminates on:
2004-08-19 2005-01-19
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Specification and qualification of welding procedures for
metallic materials — Welding procedure test —
Part 7:
Overlay welding
Descriptif et qualification d'un mode opératoire de soudage pour les matériaux métalliques — Épreuve de
qualification d'un mode opératoire de soudage —
Partie 7: Rechargement par soudage
ICS 25.160.10
ISO/CEN PARALLEL ENQUIRY
This draft International Standard is a draft standard developed within the European Committee for
Standardization (CEN) and processed under the CEN-lead mode of collaboration as defined in the
Vienna Agreement. The document has been transmitted by CEN to ISO for circulation for ISO member
body voting in parallel with CEN enquiry. Comments received from ISO member bodies, including those
from non-CEN members, will be considered by the appropriate CEN technical body. Should this DIS be
accepted, a final draft, established on the basis of comments received, will be submitted to a parallel two-
month FDIS vote in ISO and formal vote in CEN.
To expedite distribution, this document is circulated as received from the committee secretariat.
ISO Central Secretariat work of editing and text composition will be undertaken at publication
stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.
THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
© International Organization for Standardization, 2004
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ISO/DIS 15614-7
PDF disclaimer
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Copyright notice
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Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
©
ii ISO 2004 – All rights reserved
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ISO/DIS 15614-7
Contents
Foreword.v
Introduction.v
1 Scope .1
2 Normative references.2
3 Terms and definitions .3
4 Principles of qualification.3
4.1 Cladding.3
4.2 Hard facing .3
4.3 Build up.3
4.4 Buttering.4
5 Welding procedure tests.4
6 Test piece .4
6.1 Shape and dimensions of test pieces .4
6.2 Welding of test pieces.6
7 Examination and testing .7
7.1 Extent of testing.7
7.2 Location and taking of test specimens .7
7.3 Non-destructive testing.9
7.4 Destructive testing .10
7.5 Acceptance criteria.11
7.6 Re-testing .12
8 Range of qualification .13
8.1 General.13
8.2 Related to the manufacturer.13
8.3 Related to the material .13
8.4 Related to the filler metal.15
8.5 Common to welding procedures.16
8.6 Specific to welding processes .17
9 Welding procedure qualification record (WPQR).19
Annex A (informative) Welding Procedure Qualification Record form (WPQR).20
Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other
provisions of EU directives .23
Figures
Figure 1 — Test piece – plate.5
Figure 2 — Test piece – tube .6
Figure 3 — Location of test specimens for surfacing on plate .8
Figure 4 — Location of tests specimens for surfacing on pipe.9
Figure 5 — Hardness traverse for overlay.10
Figure 6— Chemical analysis specimen for corrosion/resistant surfacing, building-up and hard surfacing weld metal
overlay .16
iii
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ISO/DIS 15614-7
Tables
Table 1 — Examination and testing of the test pieces .7
Table 2— Permitted maximum hardness values.12
Table 3 — Range of qualification for steel groups and sub-groups .14
Table 4— Range of qualification for parent metal thickness .15
Table ZA – Relation between this European standard and the Directive 97/23/EC.23
iv
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ISO/DIS 15614-7
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires qualification by at least 75 % of the member bodies casting a
vote.
Introduction
All new welding procedure qualifications are to be in accordance with this standard from the date of its issue.
However, this standard does nor invalidate previous welding procedure qualifications made to former national
standards and specifications or previous issues of this specification providing the intent of the technical
requirements is satisfied and the previous procedure qualifications are relevant to the application and production
work on which they are to be employed.
Also, where additional tests have to be carried out to make the qualification technically equivalent, it is only
necessary to do the additional tests on a test piece which should be made in accordance with this standard.
Consideration of previous procedure qualifications to former national standards or specifications should be at the
time of the enquiry or contract stage and agreed between the contracting parties.
Requests for official interpretations of any aspect of this standard should be directed to the secretariat if ISO/TC
44/SC10 via your national standards body, a complete listing which can be found at www.iso.org.
v
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DRAFT INTERNATIONAL STANDARD ISO/DIS 15614-7
Specification and qualification of welding procedures for metallic
materials — Welding procedure test — Part 7: Overlay welding
1 Scope
This standard is part of a series of standards, details of this series are given in EN ISO 15607:2003, Annex A.
This standard specifies how a preliminary welding procedure specification for overlay welding is qualified by
welding procedure tests.
This standard defines the conditions for execution of welding procedure tests and the range of qualification for
welding procedures for all practical welding operations within the range of variables listed in clause 8.
Tests shall be carried out in accordance with this standard. Additional tests may be required by application
standards.
This standard applies to all welding processes suitable for overlay welding. The principles of this standard may be
applied to other application if required by the design specification.
Overlay welding can be carried out in accordance with the processes listed in EN ISO 4063:
111 manual metal arc welding (metal arc welding with covered electrode);
12 submerged arc welding;
131 metal inert gas welding; MIG welding;
135 metal active gas welding; MAG welding;
136 tubular cored metal arc welding with active gas shield;
141 tungsten inert gas welding; TIG welding;
15 plasma arc welding;
311oxy-acetylene welding;
51 electron beam welding;
52 laser welding;
72 electroslag welding.
The principles of this standard may be applied to other welding processes.
This standard does not apply to overlay welding in which method related to cracks are necessary for the application
of the product (e.g. special hard facing applications).
1 © ISO 2004 – All rights reserved
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ISO/DIS 15614-7
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 439, Welding consumables — Shielding gases for arc welding and cutting.
EN 571-1, Non destructive testing — Penetrant testing — Part 1: General principles.
EN 760, Welding consumables — Fluxes for submerged arc welding — Classification.
EN 910, Destructive tests on welds in metallic materials — Bend tests.
EN 970, Non-destructive examination of fusion welds — Visual examination.
EN 1043-1, Destructive tests on welds in metallic materials — Hardness test — Part 1:Hardness test on arc welded
joints
EN 1043-2, Destructive tests on welds in metallic materials — Hardness test — Part 2: Micro hardness testing on
welded joints
EN 1321, Destructive tests on welds in metallic materials — Macroscopic and microscopic examination of welds.
EN 1714, Non destructive examination of welds — Ultrasonic examination of welded joints.
EN ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers
(ISO 4063:1998).
EN ISO 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) —
Quality levels for imperfections (ISO 5817:2003).
EN ISO 6947, Welds — Working positions — Definitions of angles of slope and rotation (ISO 6947:1993).
EN ISO 15607:2003, Specification and qualification of welding procedures for metallic materials — General rules
(ISO 15607:2003).
CR ISO 15608, Welding – Guidelines for a metallic material grouping system for fabrication purposes.
prEN ISO 15609-1, Specification and qualification of welding procedure for metallic materials — Welding procedure
specification — Part 1: Arc welding (ISO/FDIS 15609-1:2003).
EN ISO 15609-2, Specification and qualification of welding procedures for metallic materials — Welding procedure
specification — Part 2: Gas welding (ISO 15609-2:2001).
prEN ISO 15609-3, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 3: Electron beam welding (ISO/FDIS 15609-3:2003).
prEN ISO 15609-4, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 4: Laser beam welding (ISO/FDIS 15609-4:2003).
prEN ISO 15609-5, Specification and qualification of welding procedure for metallic materials — Welding procedure
specification — Part 5: Resistance welding (ISO/FDIS 15609-5:2003).
prEN ISO 15609-6, Specification and qualification of welding procedure for metallic materials — Welding procedure
specification — Part 6: Laser beam cladding.
prEN ISO 15613, Specification and qualification of welding procedure for metallic materials — Qualification based
on pre-production welding test (ISO/FDIS 15613:2003).
© ISO 2004 – All rights reserved 2
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ISO/DIS 15614-7
prEN ISO 15614-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO/FDIS
15614-1:2003).
3 Terms and definitions
For the purposes of this standard, the definitions given in EN ISO 15607 and the following apply.
3.1
overlay welding
surfacing by welding
3.2
cladding
overlay welding used to obtain improved corrosion and/or heat resistance
3.3
hard facing
overlaywelding to increase wear and/or impact resistance
3.4
buttering
overlaywelding on a parent metal to provide a suitable transition between the parent metal and subsequent welds,
specially used for dissimilar weld
3.5
build up
overlay welding used to obtain or restore required dimensions of similar grade as the parent metal
3.6
buffer layer
a layer on a parent metal to provide a suitable metallurgical transition with the final overlay
4 Principles of qualification
4.1 Cladding
The preliminary welding procedure specification shall be in accordance with prEN ISO 15609-1, prEN ISO 15609-3
and prEN ISO 15609-4. It shall specify the tolerances for all the relevant parameters.
The welding procedure shall be qualified in accordance with clauses 5 to 8.
4.2 Hard facing
The preliminary welding procedure specification shall be in accordance with prEN ISO 15609-1, EN ISO 15609-2,
prEN ISO 15609-3 and prEN ISO 15609-4. It shall specify the tolerances for all the relevant parameters.
The welding procedure shall be qualified in accordance with clauses 5 to 8.
4.3 Build up
The preliminary welding procedure specification shall be in accordance with prEN ISO 15609-1. It shall specify the
tolerances for all the relevant parameters.
The welding procedure shall be qualified in accordance with prEN ISO 15613 or prEN ISO 15614-1.
© ISO 2004 – All rights reserved 3
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ISO/DIS 15614-7
4.4 Buttering
The preliminary welding procedure specification shall be in accordance with prEN ISO 15609-1. It shall specify the
tolerances for all the relevant parameters.
If buttering is used for welding between dissimilar materials, the welding procedure shall be qualified in accordance
with prEN ISO 15614-1.
If buttering is used to produce a metallurgically compatible weld metal between the parent metal and cladding or
hard facing, the welding procedure shall be qualified in accordance with clauses 5 to 8.
5 Welding procedure tests
For welding procedure qualification, a test piece shall be welded using the same welding process as the one used
in production.
The welding and testing of test pieces shall be in accordance with clauses 6 and 7.
6 Test piece
6.1 Shape and dimensions of test pieces
6.1.1 General
Testing of overlay welding shall be carried out on a standardized test piece or pieces in accordance with the pWPS
representing the production conditions.
The length or number of test pieces shall be sufficient to allow all required tests to be carried out (see Figures 1
and 2).
The thickness and/or diameter of the test pieces at the point where welding is performed shall be selected in
accordance with the range of qualification.
6.1.2 Cladding and hard facing
A minimum of three beads for the last layer is required.
6.1.3 Buffer layer
If a buffer layer is used in production welding, it shall be used in welding the test piece.
© ISO 2004 – All rights reserved 4
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ISO/DIS 15614-7
Dimensions in millimetres
a) Axial welding b) Circular welding
Key
1 Number of layers in accordance with the pWPS
2 Welding direction
D
p
t material thickness
Figure 1 — Test piece – plate
© ISO 2004 – All rights reserved 5
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ISO/DIS 15614-7
Dimensions in millimetres
a) Axial welding b) Circumferential welding
Key
1
2 Welding direction
D
e
D
i
t material thickness
Figure 2 — Test piece – tube
If any essential variables which do not affect metallurgical properties in accordance with the WPS
(prEN ISO 15609-1) – (e.g. welding from inside tube, machinery) are changed, a pre-production test in accordance
with prEN ISO 15613 shall be carried out before starting production.
6.2 Welding of test pieces
6.2.1 Welding
Preparation and welding of test pieces shall be carried out in accordance with the pWPS and under the same
production conditions under which they are to represent. Welding and testing of the test pieces shall be witnessed
by an examiner or an examining body.
6.2.2 Preheating, interpass temperature and post weld heat treatment (PWHT)
The preheating,interpass temperatures and post weld heat treatment (PWHT) depend on the filler metal and the
parent metal used. Depending on the type of overlay, the pWPS may be completed with the heating rate and
cooling rate if necessary for the purpose of use.
© ISO 2004 – All rights reserved 6
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ISO/DIS 15614-7
7 Examination and testing
7.1 Extent of testing
Testing includes both non-destructive testing (NDT) and destructive testing which shall be in accordance with the
requirements of Table 1.
Table 1 — Examination and testing of the test pieces
Test piece Type of test Extent of testing Footnote
Cladding - Visual testing 100 % -
a
- Ultrasonic testing 100 %
- Surface crack detection 100 % b
c
- Transverse side bend test 2 specimen
- Macroscopic examination 1 specimen -
d
- Microscopic examination 1 specimen
- Chemical analysis 1 specimen -
1 specimen -
- δ ferrite content
d
1 survey
- Hardness test
Hard facing - Visual testing 100 % -
- Surface crack detection 100 % b
- Macroscopic examination 1 specimen -
- Hardness test 1 survey -
d
- Microscopic examination 1 specimen
- Transverse side bend test 2 specimens -
a
If required, in accordance with the relevant specification.
b
Penetrant testing or magnetic particle testing. For non-magnetic materials, penetrant testing.
c
In the case of test piece 2a) transverse bend test may be replaced by UT plus two additional macro
examinations.
d
not required for material group 1.
7.2 Location and taking of test specimens
Test specimens shall be taken in accordance with Figures 3 and 4.
Test specimens shall be taken after NDT has shown satisfactory result. It is permitted to take the test specimens
from locations avoiding areas showing acceptable imperfections.
It is acceptable to take the test specimens from locations avoiding areas which have imperfections within the
acceptance limits for the NDT method(s) used.
© ISO 2004 – All rights reserved 7
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ISO/DIS 15614-7
a) Axial deposit b) Circular deposit
Key
1 Discard ≥25 mm of deposited metal
2 Area for:
- 1 transverse side bend specimen.
3 Area for:
- 1 macro test specimen
- δ ferrite content, chemical analysis
- 1 micro test specimen with hardness test.
- re-test.
4 Area for:
- 1 transverse side bend specimen ;
5 Welding direction
Figure 3 — Location of test specimens for surfacing on plate
© ISO 2004 – All rights reserved 8
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ISO/DIS 15614-7
a) Axial deposit b) Circumferential deposit
Key
1 Discard ≥25 mm of deposited metal
2 Area for:
- 1 transverse side bend specimen.
3 Area fo
...
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