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1、BRITISH STANDARD BS EN ISO 9956-10:1997 Specification and approval of welding procedures for metallic materials Part 10: Welding procedure specification for electron beam welding The European Standard EN ISO 9956-10:1996 has the status of a British Standard ICS 25.160.10 Licensed Copy: sheffieldun s
2、heffieldun, na, Sun Nov 19 09:00:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 9956-10:1997 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 February 1997 BS
3、I 11-1998 The following BSI references relate to the work on this standard: Committee reference WEE/36 Draft for comment 94/709275 DC ISBN 0 580 27002 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee WEE/36, Approval tes
4、ting of welding procedures and welders, upon which the following bodies were represented: AEA Technology Association of Consulting Scientists British Constructional Steelwork Association Ltd. British Iron and Steel Producers Association British Nuclear Fuels plc British Railways Board British Stainl
5、ess Steel Association Castings Technology International Electricity Association General Municipal Boilermaker and Allied Trades Union Health and Safety Executive Heating and Ventilating Contractors Association Lloyds Register of Shipping Ministry of Defence Power Generation Contractors Association (
6、PGCA (BEAMA Ltd.) Process Plant Association Railway Industry Association Safety Assessment Federation Ltd. Welding Institute Welding Manufacturers Association (BEAMA Ltd.) Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:00:47 GMT+00:
7、00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 9956-10:1997 BSI 11-1998i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN ISO 9956-103 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:00:47 GMT+00:00 2006, Unc
8、ontrolled Copy, (c) BSI BS EN ISO 9956-10:1997 ii BSI 11-1998 National foreword This British Standard has been prepared by Technical Committee WEE/36 and is the English language version of EN ISO 9956 Specification and approval of welding procedures for metallic materials Part 10:1996 Welding proced
9、ure specification for electron beam welding, published by the European Committee for Standardization (CEN). EN ISO 9956-10:1996 was produced as a result of international discussions in which the United Kingdom took an active part. There has previously been no direct British Standard equivalent to th
10、is standard. It is assumed that the execution of the provisions of this document is entrusted to suitably qualified and experienced persons. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applica
11、tion. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross references Publication referred toCorresponding British Standard EN 288-1:1992BS EN 288 Specification and approval of welding procedures for metallic materials Part 1:1992 General rules for fusi
12、on welding EN 24063:1992BS EN 24063:1992 Welding, brazing, soldering and braze welding of metals Nomenclature of processes and reference numbers for symbolic representation on drawings Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, p
13、ages 2 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:00:47 GMT+00:00 2006, U
14、ncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 9956-10 October 1996 ICS 25.160.10 Descriptors: Welding, metals, fusion welding, electric welding, electron beam welding, specification, procedure, acceptance English version Specification and approval of welding procedur
15、es for metallic materials Part 10: Welding procedure specification for electron beam welding (ISO 9956-10:1996) Descriptif et qualification dun mode opratoire de soudage pour les matriaux mtalliques Partie 10: Descriptif dun mode opratoire de soudage par faisceau dlectrons (ISO 9956-10:1996) Anforde
16、rung und Anerkennung von Schweiverfahren fr metallische Werkstoffe Teil 10: Schweianweiung fr das Elektronenstrahlschweien (ISO 9956-10:1996) This European Standard was approved by CEN on 1996-08-04. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condit
17、ions 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 Central Secretariat or to any CEN member. This European Standard exists in three o
18、fficial 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austri
19、a, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue
20、de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members. Ref. No. EN ISO 9956-10:1996 E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:00:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9956-10:1996 2 BSI 11-1998 Foreword The text of EN ISO 9956-10:1996 has been prepar
21、ed 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 endorsem
22、ent, at the latest by April 1997, and conflicting national standards shall be withdrawn at the latest by April 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Den
23、mark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 3.1Slope up3 3.2Slope down3 3.3Working distance3 3.4Tacking pass3 3.5Wel
24、d pass3 3.6Cosmetic pass3 3.7Overlap3 3.8Back or front support3 3.9Beam current3 3.10 Beam current pulsing3 3.11 Focusing lens current3 3.12 Beam deflection3 3.13 Beam oscillation3 4Technical contents of welding procedure specification (WPS)4 4.1General4 4.2Related to the manufacturer4 4.3Related to
25、 the parent materials4 4.4Welding process4 4.5Joint design4 4.6Welding position4 4.7Joint preparation4 4.8Welding technique4 4.9Jigs, fixtures and tooling4 4.10 Back and/or front support4 4.11 Equipment used4 4.12 Filler or added material(s) (if any)4 4.13 Welding parameters4 4.14 Thermal conditions
26、5 4.15 Magnetism5 4.16 Operations after welding5 Annex A (informative) Welding procedure specification for electron beam welding (process 76)6 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:00:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9956-10:1996 BSI 11-19983 1 Scope This Euro
27、pean Standard specifies requirements for the content of welding procedure specifications for electron beam welding. Variables listed in this European Standard are those influencing the metallurgy, mechanical properties and the geometry of the welded assembly. 2 Normative references This European Sta
28、ndard 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
29、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 288-1, Specification and approval of welding procedures for metallic materials Part 1: General rules for fusion welding. EN 24063, Wel
30、ding, brazing, soldering and braze welding of metals Nomenclature of processes and reference numbers for symbolic representation on drawings. (ISO 4063:1992) pr EN ISO 6947, Welds Working positions Definitions of angles of slope and rotation. (ISO 6947:1990) 3 Definitions For the purposes of this st
31、andard, the following definitions apply in addition to those given in EN 288-1. 3.1 slope up the controlled increase of the beam power at the beginning of welding 3.2 slope down the controlled decrease of the beam power at the end of welding. The slope down region is the region on the workpiece in w
32、hich the effects of slope down occur. It can consist of one or two areas, depending on the selected welding mode: a) in full penetration welding: a region where beam penetration is still complete; a region where penetration is partial or decreasing. b) in partial penetration welding: a region where
33、penetration decreases continuously. 3.3 working distance the distance between the surface of the workpiece and a standard reference point of the equipment which is traceable to the true focusing lens or mirror centre 3.4 tacking pass the pass made to hold the parts to be welded in proper alignment u
34、ntil the final welds are made NOTEThis may be produced by a continuous or discontinuous pass with partial penetration. 3.5 weld pass the pass ensuring fusion to the required depth 3.6 cosmetic pass superficial remelting of the weld in order to enhance its appearance NOTEThis pass is made with a defo
35、cused or oscillating beam. 3.7 overlap that portion of the weld pass remelted prior to the slope down 3.8 back or front support a plate placed against the workpiece on either the back or front face of the joint in order to retain the molten weld metal 3.9 beam current the value of the electric curre
36、nt in the beam 3.10 beam current pulsing the periodic variation of the beam current 3.11 focusing lens current the current passing through the focusing lens coil 3.12 beam deflection electromagnetic deflection of the beam from the gun axis 3.13 beam oscillation periodic deflection of the beam, achie
37、ved by electromagnetic forces Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:00:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9956-10:1996 4 BSI 11-1998 NOTEAn oscillation is defined by: a) signal shape, e.g. circular, transversal, longitudinal; b) the signal amplitude; c) the freq
38、uency; d) the orientation in relation to the welding direction. 4 Technical contents of welding procedure specification (WPS) 4.1 General The welding procedure specification (WPS) shall give details of how a welding operation is to be performed and shall contain all relevant information about the we
39、lding work. Welding procedure specifications may cover a certain range of thicknesses of the joined parts and may also cover a range of parent metals and even filler metals. Some manufacturers may additionally prefer to prepare work instructions for each specific job as part of the detailed producti
40、on planning. The information listed below is adequate for most welding operations. For some applications it may be necessary to supplement or reduce the list. The relevant information shall be specified in the WPS. Ranges and tolerances, according to the manufacturers experience, shall be specified
41、when appropriate. An example of the WPS format is shown in annex A. 4.2 Related to the manufacturer 4.2.1 Identification of the manufacturer 4.2.2 Identification of the WPS 4.2.3 Reference to the welding procedure approval record (WPAR) or other documents, as required 4.3 Related to the parent mater
42、ials 4.3.1 Grades Identification of the parent materials (and backing plates, if any), preferably by reference to an appropriate standard, and for information the type of product (rolled, forged, cast, etc.) shall be provided. A WPS may cover a group of materials. 4.3.2 Materials dimensions The foll
43、owing dimensions shall be provided: the thickness range of the joint; the range of workpiece outside diameters. 4.4 Welding process The welding process number is 76 according to EN 24063. 4.5 Joint design A sketch of the joint design showing configuration, dimensions and tolerances shall be provided
44、. 4.6 Welding position The welding positions shall be designated as specified in EN ISO 6947. 4.7 Joint preparation The following regarding joint preparation shall be provided: joint preparation method, cleaning, degreasing, etc.; for magnetic materials any recommendation will be specified on the WP
45、S, if necessary; protection of joint preparation (if necessary). 4.8 Welding technique The welding technique sketch shall show details of all weld passes (tacking pass, welding pass, cosmetic pass). 4.9 Jigs, fixtures and tooling The methods to be used for workpiece fixturing shall be described (inc
46、luding manual tack welding, if used). 4.10 Back and/or front support Type(s) and dimensions (if any) shall be provided. 4.11 Equipment used Identification of any equipment shall be provided. 4.11.1 Electron beam welding equipment 4.11.2 Filler material(s) feeding system (if any) Description (schemat
47、ic) showing design, position of the filler material(s) feeding system in relation to joint, welding direction and welding point shall be provided. 4.12 Filler or added material(s) (if any) The following information shall be provided: 4.12.1 Filler or added material(s) designation 4.12.2 Filler or ad
48、ded material(s) dimensions 4.12.3 Filler or added material(s) handling If a filler or added material is to be cleaned before used, this shall be specified. 4.13 Welding parameters 4.13.1 Electrical parameters Accelerating voltage (in kilovolts); beam current (in milliamperes) (pulse parameters to be
49、 defined, if any); focusing lens current(s) (in amperes); beam deflection; D.C. deflection; A.C. oscillation: signal shape, and orientation to the welding direction, frequency (in hertz), signal amplitude (mm of deflection); Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:00:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 9956-10:1996 BSI 11-19985 overlap, slope up, slope down (in seconds, millimetres or degrees); slope profile. 4.13.2 Mechanical parameters Travel direction including