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    CEN TC 121

    Date: 2001-10

    prEN ISO/FDIS 15609-5:2001(E)

    CEN TC 121

    Secretariat: DS

    Specification and qualification of welding procedures for metallicmaterials Welding procedure specification Part 5: Resistance welding

    (ISO/FDIS 15609-5:2001(E))Anforderung und Qualifikation von Schweiverfahren fr metallische Werkstoffe Schweianweisung Teil 5:Widerstandsschweien (ISO/DIS 15609-5:2001)

    Descriptif et qualification d'un mode opratoire de soudage pour les matriaux mtalliques Descriptif etqualification d'un mode opratoire de soudage Partie 5 : Soudage par rsistance (ISO/DIS 15609-5:2001)

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    Contents

    Foreword ..................................................................................................................................................................... 3

    Int roduct ion ................................................................................................................................................................ 4

    1 Scope.............................................................................................................................................................. 5

    2 Normative references ................................................................................................................................... 5

    3 Terms and defini tions ................................................................................................................................... 6

    4 Technical contents of welding procedure specification (WPS) ............................................................... 64.1 General ........................................................................................................................................................... 64.2 Related to manufacturer ............................................................................................................................... 64.3 Related to parent material ............................................................................................................................ 64.4 Common to all weld ing procedures ............................................................................................................ 6

    Annex A(informative) Welding procedure speci fication I Planned process requirements....................... 9

    Annex B(informative) Welding procedure speci fication II Qualit y acceptance cri teria .......................... 11

    Annex C(informative) Welding procedure specif ication III Welding machine set-up .............................. 12

    Annex ZA(informative) Clauses of this European Standard addressing essential requirements or otherprov isions of EU Directives ....................................................................................................................... 13

    Bibl iography ............................................................................................................................................................. 14

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    Introduction

    All new welding procedures issued and the procedure for their creation and qualification are to be in accordancewith this standard for the date of its issue.

    This standard does not, however, invalidate welding procedures and their qualification complying with then existingnational or international standards or regulations, provided the intent of the technical requirement is satisfied andthe specified application remains unchanged.

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    1 Scope

    This standard specifies requirements for the content of welding procedure specifications for resistance spot, seam,butt and projection welding processes. The acceptability of applying the principles of the standard to otherresistance and related welding processes should be established before any qualification is undertaken.

    This standard is part of a series of standards. Details of this series are given in prEN ISO 15607, Annex A.

    Variables listed in this standard are those influencing either weld dimensions (quality), weld nugget dimension, weldpattern positioning, mechanical properties or geometry of the welded joint.

    2 Normative references

    This European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).

    EN 25184, Straight resistance spot welding electrodes (ISO 5184: 1979).

    EN 25821, Resistance spot welding electrode caps (ISO 5821: 1979).

    EN 25827, Spot welding Electrode back-ups and clamps (ISO 5827: 1983).

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    3 Terms and definitions

    For the purposes of this European Standard, the terms and definitions given in prEN ISO 15607 and ISO 669apply.

    4 Technical contents of welding procedure specification (WPS)

    4.1 General

    The welding procedure specification (WPS) shall provide all the necessary information required to make a weld.The minimum information required in a WPS for resistance welding processes is listed in clause 4.2 to 4.5.

    Welding procedure specifications shall apply to one specific application only, and the acceptability of expansion tocover similar applications shall be established before any qualification is undertaken.

    For some applications it may be necessary to supplement the list. All relevant information shall be specified in theWPS.

    Tolerance ranges shall be specified.

    Examples of the WPS format are shown in Annexes A, B and C; these forms should be modified according toactual practice.

    4.2 Related to manufacturer

    Identification of manufacturer;

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    multi:

    direct;

    indirect;

    push-pull;

    series.

    mechanized:

    single stage;

    transfer line;

    automatic feed;

    robotic.

    b) Seam welding (22) (Roller spot welding):

    manual/guided/automatic/robotic.

    c) Projection welding (23):

    single/multiple;

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    4.4.5 Welding technique

    The following shall be specified when applicable:

    manual, multi, mechanized, robotic welding;

    access details, weld sequence and/or pattern and gun angle or attitude;

    work holding, clamping or guidance systems, tack welding, etc.;

    procedures to minimize distortion, indentation, contamination, corrosion, etc. (e.g. use of face or backing

    electrodes, shielding gas).

    NOTE Operator protection should be taken into consideration.

    4.4.6 Resistance welding electrodes and auxiliaries

    The following shall be specified when applicable:

    shape, dimensions and material composition of electrodes, see EN 25184, caps see EN 25821, adaptors see

    EN ISO 5183-1 and prEN ISO 5183-2;

    shape, dimensions and material composition of backing electrodes, see EN 25827;

    shape, dimensions and material composition of auxiliaries (e.g. electrode holders, cables, flexibles, shunts),see EN ISO 8205-1 and EN ISO 8205-2;

    applicable tolerances for the maintenance of the specified quality requirements, see EN 28430-1, EN 28430-2

    d EN 28430 3

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    Annex A

    (informative)

    Welding procedure specification I Planned process requirements

    No.: ________

    Issue/Revision: No. of welding procedure specification for nextDate: operational sequence for this joint/assembly:

    Customer:

    Manufacturer:

    Product

    Description: Quality category:

    Assembly name: Product identification No.1)

    :

    Assembly No.1)

    :Joint location/operation

    Number/identification code1)

    : Joint type:Parent material: Form:

    Surface condition: Weld pattern/sequence (sketch)1)

    :

    Number of welds per joint: Quality acceptance specification: Annex B

    Procedure specification

    Type: Welding rate (weld/min):

    Environmental constraints: Location:

    Machine identification No.: Machine type: *

    Manual/mechanized/automated: Machine size/capacity:

    El t d t 1) T li 1)

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    Annex B

    (informative)

    Welding procedure specification II Quality acceptance criteria

    No.: ________

    Issue/Revision:Date:

    Customer:

    Manufacturer:

    Product

    Description: Product identification No.1)

    :

    Assembly name: Assembly No.1)

    :

    Joint type:Joint location/operationnumber/identification code 1):

    Quality requirements

    Product: Type of weld:

    Welds quality rating: Appearance:

    Geometrical and physical properties of joint

    S ifi d t t l l

    min.

    l

    min. weld

    di t

    fracture

    t

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    Annex C

    (informative)

    Welding procedure specification III Welding machine set-up

    No.: ________

    Issue/Revision:

    Date:Customer:

    Manufacturer:

    Product

    Description: Product identification No.1)

    :

    Assembly name: Assembly No.1)

    :

    Joint type:Joint location/operationnumber/identification code

    1):

    MachineMachine/Gun type: Machine identification No.:

    Platen/electrode dimension (mm): Secondary cable/shunt size (mm x mm):

    Transformer rating (kVA): Secondary cable(s) type x length (m):

    Tap No.: Transformer identification No.:

    Control timer/programmer: Control timer/programmer identification No.:

    Cylinder type: Tooling1)

    :

    High lift: Cooling type/flow rate (l/min):

    Electrode set-up 1)): Electrode approach rate (m/min):

    Ch k f ili i S f t t i l

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    Annex ZA

    (informative)

    Clauses of this European Standard addressing essential requirements orother provisions of EU Directives

    This European standard has been prepared under a mandate given to CEN by the European Commission and theEuropean Free Trade Association and supports essential requirements of EU Directive 97/23/EEC.

    WARNING : Other requirements and other EU Directives may be applicable to the product(s) falling within thescope of this standard.

    The following clauses of this standard are likely to support requirements of Directive 97/23/EEC.

    Compliance with the clauses of this standard provides one means of conforming with the specific essential

    requirements of the Directive concerned and associated EFTA regulations.

    Table ZA.1 Relation between this European standard and the Directive 97/23/EEC

    Clauses/Paragraphs of this Europeanstandard

    Essential requirement of the Directive97/23/EEC

    Comments/Notes

    All clauses Annex I, 3.1.2 Permanent joining

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    Bibliography

    List of ISO standards conforming to European standards quoted in clause 2

    European standard givenin clause 2

    ISO standardcorresponding

    Title of the ISO standard

    EN 25184 ISO 5184: 1979 Straight resistance spot welding electrodes

    EN 25821 ISO 5821: 1979 Resistance spot welding, electrode caps

    EN 25827 ISO 5827: 1983 Spot welding Electrode back-ups and clamps

    EN 28430-1 ISO 8430-1: 1988 Resistance spot welding Electrode holders Part 1: Taper fixing 1:10

    EN 28430-2 ISO 8430-2: 1988 Resistance spot welding Electrode holders Part 2: Morse taper fixing

    EN 28430-3 ISO 8430-3: 1988 Resistance spot welding Electrode holders

    Part 3: Parallel shank fixing for end thrust

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