BS EN ISO 10042-2006 Welding - Arc-welded joints in aluminium and its alloys - Quality levels for imperfections《焊接 铝和铝合金弧焊接头 缺陷质量分级》.pdf

1、BRITISH STANDARDBS EN ISO 10042:2005IncorporatingCorrigendum No. 1Welding Arc-welded joints in aluminium and its alloys Quality levels for imperfectionsThe European Standard EN ISO 10042:2005 has the status of a British StandardICS 25.160.40g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g5

2、4g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 10042:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 January 2006 BSI August 2006IS

3、BN 0 580 47197 7National forewordThis British Standard is the official English language version of EN ISO 10042:2005. It is identical with ISO 10042:2005, including Corrigendum Febuary 2006. It supersedes BS EN 30042:1994 which is withdrawn.The UK participation in its preparation was entrusted to Te

4、chnical Committee WEE/-/1, Briefing committee for welding.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary o

5、f pagesThis document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 19 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendm

6、ents issued since publicationAmd. No.16412 August 2006 Correction of wording in subclause 3.3Corrigendum. 1Date CommentsA list of organizations represented on this committee can be obtained on request to its secretary.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 10042November 2005ICS 25.160

7、.40 Supersedes EN 30042:1994Incorporating Corrigendum April 2006English VersionWelding - Arc-welded joints in aluminium and its alloys - Qualitylevels for imperfections (ISO 10042:2005)Soudage - Assemblages en aluminium et alliagesdaluminium souds larc - Niveaux de qualit par rapportaux dfauts (ISO

8、10042:2005)Schweien - Lichtbogenschweiverbindungen anAluminium und seinen Legierungen - Bewertungsgruppenvon Unregelmigkeiten (ISO 10042:2005)This European Standard was approved by CEN on 28 October 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the co

9、nditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three

10、official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria,

11、 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.EUROPEAN COMMITTEE FOR STANDARDIZATIONC

12、OMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 10042:2005: EForeword This document (EN ISO 10042:2005) has be

13、en prepared by Technical Committee ISO/TC 44 “Welding and allied processes“ in collaboration with Technical Committee CEN/TC 121 “Welding“, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or

14、by endorsement, at the latest by May 2006, and conflicting national standards shall be withdrawn at the latest by May 2006. This document supersedes EN 30042:1994. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implemen

15、t this European Standard: 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. En

16、dorsement notice The text of ISO 10042:2005/Cor.1:2006 has been approved by CEN as EN ISO 10042:2005/AC:2006without any modifications. EN ISO 10042:2005Reference numberISO 10042:2005(E)INTERNATIONAL STANDARDISO10042Second edition2005-11-15Welding Arc-welded joints in aluminium and its alloys Quality

17、 levels for imperfections Soudage Assemblages en aluminium et alliages daluminium souds larc Niveaux de qualit par rapport aux dfauts EN ISO 10042:2005iiiiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references . 13 Terms and definitions. 24 Symbols . 35 Assessment of imperfections

18、3Annex A (informative) Examples of the determination of the percent porosity 16Annex B (informative) Additional information and guidelines for users of this International Standard 18Bibliography . 19EN ISO 10042:2005ivForeword ISO (the International Organization for Standardization) is a worldwide f

19、ederation 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 co

20、mmittee. 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 accor

21、dance 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 requir

22、es 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 10042 was prepared by Technical

23、 Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 10, Unification of requirements in the field of metal welding.This second edition cancels and replaces the first edition (ISO 10042:1992), which has been technically revised. EN ISO 10042:2005vIntroduction This International Standar

24、d should be used as a reference in drafting application codes and/or other application standards. It contains a simplified selection of arc welding imperfections based on the designations given in ISO 6520-1. Some imperfections described in ISO 6520-1 have been used directly and some have been group

25、ed together. The basic numerical referencing system from ISO 6520-1 has been used. The purpose of this International Standard is to define the dimensions of typical imperfections which might be expected in normal fabrication. It may be used within a quality system for the production of welded joints

26、. It provides three sets of dimensional values from which a selection can be made for a particular application. The quality level necessary in each case should be defined by the application standard or the responsible designer in conjunction with the manufacturer, user and/or other parties concerned

27、. The quality level will have to be prescribed before the start of production, preferably at the enquiry or order stage. For special purposes, additional details may to be prescribed. The quality levels given in this International Standard provide basic reference data and are not specifically relate

28、d to any particular application. They refer to the types of welded joint in fabrication and not to the complete product or component itself. It is possible, therefore, that different quality levels are applied to individual welded joints in the same product or component. It would normally be expecte

29、d that for a particular welded joint the dimensional limits for imperfections could all be covered by specifying one quality level. In some cases, it may be necessary to specify different quality levels for different imperfections in the same welded joint. The choice of quality level for any applica

30、tion should take account of design considerations, subsequent processing (e.g. surfacing), mode of stressing (e.g. static, dynamic), service conditions (e.g. temperature, environment) and consequences of failure. Economic factors are also important and should include not only the cost of welding but

31、 also of inspection, test and repair. Although this International Standard includes types of imperfection relevant to the arc welding processes given in Clause 1, only those which are applicable to the process and application in question need to be considered. Imperfections are quoted in terms of th

32、eir actual dimensions, and their detection and evaluation may require the use of one or more methods of non-destructive testing. The detection and sizing of imperfections is dependent on the inspection methods and the extent of testing specified in the application standard or contract. This Internat

33、ional Standard does not address the methods used for the detection of imperfections. However, ISO 17635 contains a correlation between the quality level and acceptance level for different NDT methods. This International Standard is directly applicable to visual examination of welds and does not incl

34、ude details of recommended methods of detection or sizing by other non-destructive means. It should be considered that there are difficulties in using these limits to establish appropriate criteria applicable to non-destructive testing methods such as ultrasonic, radiographic and penetrant testing a

35、nd they may need to be supplemented by requirements for inspection, examination and testing. The values given for imperfections are for welds produced using normal welding practice. Requirements for smaller (more stringent) values as stated in quality level B may include additional manufacturing pro

36、cesses, e.g. grinding, TIG dressing. Requests for official interpretation of any aspect of this International Standard 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.EN ISO 10042:2005blank1Weld

37、ing Arc-welded joints in aluminium and its alloys Quality levels for imperfections 1 Scope This International Standard specifies quality levels for imperfections in arc-welded joints in aluminium and its alloys. It applies to material thicknesses above 0,5 mm. It covers full-penetration butt welds a

38、nd all fillet welds. The principles of this International Standard may also be applied to partial-penetration butt welds. Quality levels for beam-welded joints are presented in ISO 13919-2. Three quality levels are given in order to permit application to a wide range of welded constructions. They ar

39、e designated by symbols B, C and D. Quality level B corresponds to the highest requirement on the finished weld. The quality levels refer to production quality and not to the fitness for purpose (see 3.2) of the product manufactured. This International Standard applies to: all types of weld, e.g. bu

40、tt welds, fillet welds and branch connections; the following welding processes and their sub-processes as defined in ISO 4063: 131 metal inert gas welding (MIG welding); gas metal arc welding /USA/, 141 tungsten inert gas welding (TIG welding); gas tungsten arc welding /USA/, 15 plasma arc welding;

41、manual, mechanized and automatic welding; all welding positions. Metallurgical aspects, e.g. grain size, hardness, are not covered by this International Standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, o

42、nly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2553, Welded, brazed and soldered joints Symbolic representation on drawingsISO 4063, Welding and allied processes Nomenclature of processes and reference numb

43、ersISO 6520-1:1998, Welding and allied processes Classification of geometric imperfections in metallic materials Part 1: Fusion weldingEN ISO 10042:200523 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1quality level description of the quality o

44、f a weld on the basis of type, size and amount of selected imperfections 3.2fitness for purpose ability of a product, process or service to serve a defined purpose under specific conditions 3.3short imperfections in cases when the weld is 100 mm long or longer, imperfections are considered to be sho

45、rt imperfections if, in the 100 mm which contains the greatest number of imperfections, their total length is not greater than 25 mm; in cases when the weld is less than 100 mm long, imperfections are considered to be short imperfections if their total length is not greater than 25 % of the length o

46、f the weld 3.4systematic imperfection imperfection that is repeatedly distributed in the weld over the weld length to be examined, the size of each individual imperfection being within the specified limits 3.5cross-sectional area area to be considered after fracture or sectioning 3.6projected area a

47、rea where imperfections distributed along the volume of the weld under consideration are imaged two-dimensionally NOTE In contrast to the cross-sectional area, the occurrence of imperfections is dependent on the weld thickness when exposed radiographically (see Figure 1). Key1 direction of X-rays 2

48、4 pores per volume unit 3 6-fold thickness 4 3-fold thickness 5 2-fold thickness 6 1-fold thickness Figure 1 Radiographic films of specimens with identical occurrence of pores per volume unit EN ISO 10042:200534 Symbols The following symbols are used in Table 1: A area surrounding a gas pore a nomin

49、al throat thickness of a fillet weld (see also ISO 2553) b width of weld reinforcement d diameter of a gas pore dAdiameter of area surrounding a gas pore dAcdiameter of circle surrounding total gas pore area h height or width of an imperfection l length of imperfection in longitudinal direction of weld lplength of projected or cross-sectional area s nominal butt weld thickness (see also ISO 2553) t wall or plate thickness (nominal size) wpwidth of weld or width or height of cross-sectional area z leg length of a fillet