ISO-9606-3-1999.pdf

A Reference number ISO 9606-3:1999(E) INTERNATIONAL STANDARD ISO 9606-3 First edition 1999-04-01 Approval testing of welders Fusion welding Part 3: Copper and copper alloys Épreuve de qualification des soudeurs Soudage par fusion Partie 3: Cuivre et ses alliages ISO 9606-3:1999(E) © ISO 1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56 CH-1211 Genève 20 Switzerland Internetisoiso.ch Printed in Switzerland ii 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 member bodies for voting. Publication as an International Standard requires approval by at least 75 % of member bodies casting a vote. International Standard ISO 9606-3 was prepared by the European Committee for Standardization (CEN) in collaboration with ISO Technical Committee TC 44, Welding and allied processes, Subcommittee SC 11, Approval requirements for welding and allied processes personnel, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). Throughout the text of this standard, read “.this European Standard.“ to mean “.this International Standard.“. ISO 9606 consists of the following parts, under the general title Approval testing of welders Fusion welding: Part 1: Steels Part 2: Aluminium and aluminium alloys Part 3: Copper and copper alloys Part 4: Nickel and nickel alloys Part 5: Titanium and titanium alloys Part 6: Magnesium and magnesium allloys -,-,- © ISOISO 9606-3:1999(E) iii Annexes A and ZA of this part of ISO 9606 are for information only. For the purposes of this part of ISO 9606, the CEN annex regarding fulfilment of European Council Directives has been removed. -,-,- ISO 9606-3:1999(E) © ISO iv Contents Page Foreword v Introduction1 1Scope1 2Normative references1 3Definitions 2 4Symbols and abbreviations2 4.1General2 4.2Test piece2 4.3Consumables2 4.4Miscellaneous 2 5Essential variables for approval testing.3 5.1General3 5.2Welding processes 3 5.3Joint types (butt and fillet welds).3 5.4Material groups3 5.5Consumables4 5.6Dimensions.4 5.7Number of test pieces 5 5.8Welding positions5 6Range of approval for the welder5 6.1General5 6.2Welding process 5 6.3Joint types5 6.4Material groups6 6.5Consumables7 6.6Dimensions.7 6.7Welding positions7 7Examination and testing.9 7.1Supervision.9 7.2Shapes and dimensions of test pieces9 7.3Welding conditions11 7.4Test methods12 7.5Test piece and test specimens .12 8Acceptance requirements for test pieces.16 9Re-tests.16 10Period of validity17 10.1Initial approval17 10.2Prolongation.17 11Certificate .17 12Designation 17 Annex A (informative) Job knowledge20 Annex ZA (informative) Bibliography23 -,-,- © ISOISO 9606-3:1999(E) v Foreword The text of EN ISO 9606-3:1999 has been prepared by Technical Committee CEN/TC 121 “Welding“, the secretariat of which is held by DS, 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 August 1999, and conflicting national standards shall be withdrawn at the latest by August 1999. This European Standard 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 ZB, which is an integral part of this standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. -,-,- -,-,- © ISOISO 9606-3:1999(E) 1 Introduction This standard covers the principles to be observed in the approval testing of welder performance for the fusion welding of copper and copper alloys. The term ''copper'' stands for copper and weldable copper alloys. The ability of the welder to follow verbal or written instructions and testing of his skill are important factors in ensuring the quality of the welded product. Testing of skill to this standard depends on welding methods in which uniform rules and test conditions are complied with, and standard test pieces are used. The test weld can be used to approve a welding procedure and a welder provided that all the relevant requirements, e.g. test piece dimensions, are satisfied (see relevant part of EN 288-2). 1 Scope This standard specifies essential requirements, ranges of approval, test conditions, acceptance requirements and certification for the approval testing of welder performance for the welding of copper. This standard applies to the approval testing of welders for the fusion welding of copper. This standard is intended to provide the basis for the mutual recognition by examining bodies for approval relating to welders' competence in the various fields of application. Tests will be carried out in accordance with this standard unless more severe tests are specified by the relevant application standard when these are applied. During the approval test the welder should be required to show adequate practical experience and job knowledge (test non mandatory) of the welding processes, materials and safety requirements for which he is to be approved; information on these aspects is given in Annex A. This standard is applicable when the welder's approval testing is required by the purchaser, by inspection authorities or by other organizations. The welding processes referred to in this standard include those fusion welding processes which are designated as manual or partly mechanized welding. It does not cover fully mechanized and automatic processes (see 5.2). This standard covers approval testing of welders for work on semi-finished and finished products made from wrought, forged or cast material types listed in 5.4. The certificate of approval testing is issued under the sole responsibility of the examiner or examining body. 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. EN 287-1 : 1992Approval testing of welders Fusion welding Part 1: Steels EN 287-2 : 1992Approval testing of welders Fusion welding Part 2: Aluminium and aluminium alloys EN 288-2 : 1992Specification and approval of welding procedures for metallic materials Part 2: Welding procedure specification for arc welding EN 571-1Non destructive testing Penetrant testing Part 1: General principles EN 895Destructive tests on welds in metallic materials Transverse tensile test ISO 9606-3:1999(E) © ISO 2 EN 910Destructive tests on welds in metallic materials Bend tests EN 970Non-destructive examination of fusion welds Visual examination EN 1289Non-destructive examination of welds Penetrant testing of welds Acceptance levels EN 1320Destructive tests on welds in metallic materials Fracture test EN 1321Destructive tests on welds in metallic materials Macroscopic and microscopic examination of welds EN 1435Non-destructive examination of welds Radiographic examination of welded joints EN 24063 : 1992Welding, brazing, soldering and braze welding of metals Nomenclature of processes and reference numbers for symbolic representation on drawings (ISO 4063 : 1990) EN 26520 : 1991Classification of imperfections in metallic fusion welds, with explanations (ISO 6520 : 1982) EN 30042 : 1994Arc-welded joints in aluminium and its weldable alloys Guidance on quality levels for imperfections (ISO 10042 : 1992) EN ISO 6947 : 1997Welds Working positions Definitions of angles of slope and rotation (ISO 6947 : 1993) CR 12187Welding Guidelines for a grouping system of materials for welding purposes ISO 857 : 1990Welding, brazing and soldering processes Vocabulary 3 Definitions For the purposes of this standard, the definitions given in EN 287-1 apply. 4 Symbols and abbreviations 4.1 General Where the full wording is not used, the following symbols and abbreviations shall be used when completing the test certificate in accordance with Annex A of EN 287-2 : 1992. 4.2 Test piece anominal throat thickness ; BWbutt weld ; Doutside diameter of pipe ; FWfillet weld ; Pplate ; tplate or pipe wall thickness ; Tpipe ; zleg length of fillet weld. 4.3 Consumables nmno filler metal ; wmwith filler metal. 4.4 Miscellaneous bswelding from both sides ; ggback grinding or back milling of welds ; mbwelding with backing material; -,-,- © ISOISO 9606-3:1999(E) 3 nbwelding without backing ; ngno back grinding or back milling ; sssingle-side welding 5 Essential variables for approval testing 5.1 General The criteria specified in this clause shall be examined in order to identify the ability of the welder in these areas. Each criterion is considered to be a significant factor in the approval testing. The welder's approval test shall be carried out on test pieces and is independent of the type of construction. 5.2 Welding processes Welding processes are defined in ISO 857 and reference numbers of welding processes for symbolic representation are listed in EN 24063. This standard covers the following welding processes: 111metal-arc welding with covered electrodes; 131metal-arc inert gas welding (MIG welding); 141tungsten inert gas arc welding (TIG welding); 15plasma arc welding; 311oxy-acetylene welding; other fusion welding processes by agreement. 5.3 Joint types (butt and fillet welds) Test pieces shall be produced for butt weld (BW) and fillet weld (FW) in plates (P) or pipes1) (T) for approval tests in accordance with 7.2. 5.4 Material groups 5.4.1 General In order to minimize unnecessary multiplication of technically identical tests, copper with similar metallurgical and welding characteristics are grouped for the purpose of a welder's approval (see 5.4.2). In general, a welder's approval test shall involve depositing weld metal having a chemical composition compatible with any copper in the parent metal group(s). The welding of any one material in a group confers approval on the welder for the welding of all other materials within the same group. When welding parent metals from two different groups which do not give approval to each other according to table 4 (see 6.4), an approval for the combination as a separate group is required. When the filler metal is dissimilar to the parent metal group, an approval for that combination of parent metal group and filler metal is needed, except when permitted by table 4. 1) The word “pipe“ alone or in combination, is used to mean “pipe“, “tube“ or “hollow section“. -,-,- ISO 9606-3:1999(E) © ISO 4 5.4.2 Copper groups of parent metal 5.4.2.1 General Copper casting alloys are included in the following groups but the filler metal shall be compatible with the filler metal used for the wrought materials in the same group. Material groups according to CR 12187 5.4.2.2 Group W 31: Pure copper 5.4.2.3 Group W 32: Copper-zinc alloys 5.4.2.4 Group W 33: Copper-tin alloys 5.4.2.5 Group W 34: Copper-nickel alloys 5.4.2.6 Group W 35: Copper-aluminium alloys 5.4.2.7 Group W 36: Copper-nickel-zinc alloys 5.5 Consumables In the approval test, the filler metal and the shielding gas, including plasma gas, shall be compatible with the parent metal and the process used in accordance with the relevant pWPS or WPS (see EN 288-2). 5.6 Dimensions The approval test should be based on the thickness of the material (i.e. plate thickness or wall thickness of pipe) and pipe diameters which the welder will use in production. A test is listed for each of the ranges of plate thickness and pipe wall thickness or pipe diameter as specified in tables 1 and 2. It is not intended that thicknesses or diameters should be measured precisely but rather the general philosophy behind the values given in tables 1 and 2 should be applied. Table 1: Test piece (plate or pipe) and range of approval Test piece thickness t mm Range approval t0,5 t t 1,5 t 1) 1) For oxy-acetylene welding (311) the test shall be carried out on the minimum and on the maximum production thickness: t t Table 2: Test piece diameter and range of approval Test piece diameter D mm Range approval D 25D to 2D D 25 0,5 D (25 mm min.) -,-,- © ISOISO 9606-3:1999(E) 5 5.7 Number of test pieces Plate:One test piece per position. Pipe:A minimum weld length of 150 mm is required, but not more than three test pieces. 5.8 Welding positions The welding positions shall be taken from EN ISO 6947. The test pieces shall be welded in accordance with the nominal angles of the positions according to EN ISO 6947. 6 Range of approval for the welder 6.1 General As a general rule, the test piece approves the welder not only for the conditions used in the test, but also for all joints which are considered easier to weld. The range of approval for each type of test is given in the relevant sub-clauses and tables. In these tables the range of approval is indicated in the same horizontal line. 6.2 Welding process Each test normally approves one process. A change of process requires a new approval test. However, it is possibl