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1、BRITISH STANDARD BS EN ISO 11970:2007 Specification and approval of welding procedures for production welding of steel castings The European Standard EN ISO 11970:2007 has the status of a British Standard ICS 25.160.10; 77.140.80 ? Licensed Copy: London South Bank University, London South Bank Unive
2、rsity, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN ISO 11970:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2007 BSI 2007 ISBN 978 0 580 53811 7 National foreword This British Standard is the UK implem
3、entation of EN ISO 11970:2007. The UK participation in its preparation was entrusted to Technical Committee ISE/6, Steel castings. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisi
4、ons of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:1
5、3:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11970 July 2007 ICS 25.160.10; 77.140.80 English Version Specification and approval of welding procedures for production welding of steel castings (ISO 11970:2001) Descriptif et qualification dun
6、 mode opratoire de soudage pour le soudage de production sur aciers mouls (ISO 11970:2001) Anforderungen und Anerkennung von Schweiverfahren fr das Produktionsschweien von Stahlguss (ISO 11970:2001) This European Standard was approved by CEN on 24 June 2007. CEN members are bound to comply with the
7、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 o
8、r 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 ve
9、rsions. 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,
10、 Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN natio
11、nal Members. Ref. No. EN ISO 11970:2007: E Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Foreword The text of ISO 11970:2001 has been prepared by Technical Committee ISO/TC 17 “Steel” of the International Org
12、anization for Standardization (ISO) and has been taken over as EN ISO 11970:2007 by Technical Committee ECISS/TC 31 “Steel castings“, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by e
13、ndorsement, at the latest by January 2008, and conflicting national standards shall be withdrawn at the latest by January 2008. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, B
14、elgium, 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. Endorsement notice
15、The text of ISO 11970:2001 has been approved by CEN as EN ISO 11970:2007 without any modifications. EN ISO 11970:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Reference number ISO 11970:2001(E) INTERNATI
16、ONAL STANDARD ISO 11970 First edition 2001-01-15 Specification and approval of welding procedures for production welding of steel castings Descriptif et qualification dun mode opratoire de soudage pour le soudage de production sur aciers mouls EN ISO 11970:2007 Licensed Copy: London South Bank Unive
17、rsity, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iii ContentsPage Foreword.iv Introduction.v 1Scope 1 2Norma
18、tive references1 3Terms and definitions .2 4Preliminary welding procedure specification (pWPS).2 5Welding procedure test.3 6Test piece .3 7Examination and testing .5 8Range of approval8 9Welding procedure approval record (WPAR) .12 Annex A (informative) Welding procedure approval Record form (WPAR)
19、welding procedure approval Test certificate.13 Annex B (normative) Details of weld test .14 EN ISO 11970:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for
20、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 r
21、ight 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. Internation
22、al 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 approval by at least 75 % of the member b
23、odies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 11970 was prepared by Technical Commit
24、tee ISO/TC 17, Steel, Subcommittee SC 11, Steel castings. Annex B forms a normative part of this International Standard. Annex A is for information only. EN ISO 11970:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy
25、, (c) BSI v Introduction All welding procedure approvals for production welding of steel castings shall be in accordance with this International Standard from the date of its issue. Previous procedure approvals that conform to the range of approval of clause 8 are valid under this International Stan
26、dard. Where additional tests have to be carried out to complete the approval it is only necessary to perform the additional tests to the requirements of clauses 6 and 7. EN ISO 11970:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, U
27、ncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 1 Specification and approval of welding procedures for production welding of steel castings 1Scope This International Standard spe
28、cifies how a welding procedure specification (WPS) for production welding of steel castings is approved, It defines the conditions for the execution of welding procedure approval tests and the limits of validity of an approved welding procedure for all practical welding operations within the range o
29、f essential variables. Tests shall be carried out in accordance with this International Standard unless additional tests are specified by the purchaser or by agreement between the contracting parties. This International Standard applies to the arc welding of steel castings. The principles of this In
30、ternational Standard may be applied to other fusion welding processes subject to agreement between the contracting parties. In the case of specific service, material or manufacturing conditions, more comprehensive tests may be specified by the purchaser, than are specified by this International Stan
31、dard, in order to gain more information, e.g. longitudinal weld tensile tests, bend tests, chemical analyses, ferrite determination in austenitic stainless steels, elongation, Charpy “V” impact tests, radiography, etc. 2Normative references The following normative documents contain provisions which,
32、 through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possib
33、ility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 148:1983, Steel Charpy impact tes
34、t (V-notch). ISO 857-1:1998, Welding and allied processes Vocabulary Part 1: Metal welding processes. ISO 4969:1980, Steel Macroscopic examination by etching with strong mineral acids. ISO 4986:1992, Steel castings Magnetic particle inspection. ISO 4987:1992. Steel castings Penetrant inspection. ISO
35、 4992:1), Steel castings Ultrasonic inspection. ISO 4993:1987, Steel castings Radiographic inspection. 1)To be published. EN ISO 11970:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 ISO 5817:2), Welding
36、 Fusion-welded jointsin steel, nickel, titanium and their alloys(beam welding excluded) Quality levels for imperfections. ISO 6507-1:1997, Metallic materials Vickers hardness test Part 1: Test method. ISO 6892:1998, Metallic Materials Tensile testing at ambient temperature. ISO 6947:1990, Welds Work
37、ing positions Definition of angles of slope and rotation. ISO 9606-1:1994, Approval testing of welders Fusion welding Part 1: Steels. ISO 9692-1:3), Welding and allied processes Recommendations for joint preparation Part 1: Manual metal- arc welding, gas-shielded metal-arc welding and gas welding of
38、 steels. ISO 9956-1:1995, Specification and approval of welding procedures for metallic materials Part 1: General rules for fusion welding. ISO 9956-2:1995, Specification and approval of welding procedures for metallic materials Part 2: Welding procedure specification for arc welding. 3Terms and def
39、initions For the purposes of this International Standard, the terms and definitions given in ISO 857-1 and ISO 9956-1 as well as the following apply. 3.1 production welding any welding carried out during manufacturing before final delivery to the purchaser including joint welding of castings and fin
40、ishing welding 3.1.1 joint welding welding used to weld cast components together or weld cast components to wrought steels in order to obtain an integral unit 3.1.2 finishing welding welding carried out in order to ensure the agreed quality of the casting 3.2 repair welding any welding carried out a
41、fter delivery to the end user, i.e. after the casting has been in service 4Preliminary welding procedure specification (pWPS) A preliminary welding procedure specification shall be prepared. It shall specify the range of all the relevant parameters according to ISO 9956-2. 2)To be published. (Revisi
42、on of ISO 5817:1992) 3)To be published. (Partial revision of ISO 9692:1992) EN ISO 11970:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 5Welding procedure test The making and testing of test pieces repr
43、esenting the type and the position of welding used in production shall be in accordance with clauses 6 and 7. The welder who undertakes the welding procedure test satisfactorily in accordance with this International Standard is approved for the appropriate range of approval according to ISO 9606-1.
44、Additional welders shall be qualified in accordance with 7.6. 6Test piece 6.1General The test piece shall be in accordance with that shown in Figure 1. 6.2Shape and dimensions of test piece Additional test pieces, or longer test pieces than the minimum size may be prepared in order to allow for extr
45、a and/or retesting specimens (in accordance with 7.5). 6.3Welding of test piece The preparation and welding of the test piece shall be carried out in accordance with the relevant pWPS. Angular tolerances may be agreed between the contracting parties or by the relevant application standard. The dimen
46、sions and shape of the groove shall be in accordance with ISO 9692-1. If tack welds are to be fused into the final joint they shall be included in the test piece. Unless otherwise specified in the purchase order or contract review, welding and testing of the test piece(s) shall be witnessed by an ex
47、aminer (or test body). When the examiner (or test body) is not specified in the purchase order the manufacturer may appoint a suitable examiner. EN ISO 11970:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI
48、 4 Dimensions in millimetres a) Plate b) Tube Key 1Discard 2Inspection length NOTEThe dimensions shown are for information only and may be adjusted to meet production and testing requirements. a c = 3t W 150 mm. b b = 6t W 350 mm. c t W 15 mm. d t1W 0,5t. e a = 5 mm to 15 mm or ? = 5 to 20. f Edge p
49、reparation and fit-up as detailed in the preliminary Welding Procedure Specification (pWPS). g e W 150 mm. h d = outside diameter. Figure 1 Test piece EN ISO 11970:2007 Licensed Copy: London South Bank University, London South Bank University, Sat Sep 01 03:13:21 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 5 7Examination and testing 7.1Extent of testing The examination and testing includes both non-destructive examination (NDE) and destructive testing (D