1、BRITISH STANDARD BS EN 25827:1992 ISO 5827:1983 Specification for Spot welding Electrode back-ups and clamps The European Standard EN 25827:1992 has the status of a British StandardBSEN25827:1992 This British Standard, having been prepared under the directionof the Welding Standards Policy Committee
2、, waspublished under the authorityof the Standards Boardand comes intoeffecton 15July 1992 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference WEE/26 Draft for comment 80/79401 DC ISBN 0 580 20614 9 Cooperating organizations The European Committee for St
3、andardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries. Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardis
4、oimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembour
5、g Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de nor
6、malisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN25827:1992 BSI 11-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN 25827 3 National annex NA (informative) Inside back cov
7、er National annex NB (informative) Inside back coverBSEN25827:1992 ii BSI 11-1999 National foreword This British Standard has been prepared under the direction of the Welding Standards Policy Committee and is the English language version of EN25827:1992, “Spot welding Electrode back-ups and clamps”,
8、 publishedbythe European Committee for Standardization (CEN). It supersedes BS 4215-5:1987, which is withdrawn. EN 25827 was produced as a result of international discussion in which the UK took an active part. A British Standard does not purport to include all the necessary provisions of a contract
9、. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to10, an ins
10、ide 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.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN25827 May1992 UDC 621.791.763.1.037 Descriptors:
11、Welding, spot welding, welding equipment, retaining flanges, dimensions English version Spot welding Electrode back-ups and clamps (ISO 5827:1983) Machines souder par points Equipements infrieurs et brides de serrage (ISO 5827:1983) Punktschweigen Keilelektroden und Klemmstcke fr Unterkupfer (ISO 58
12、27:1983) This European Standard was approved by CEN on 1992-05-22. CEN members are bound to comply with the 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
13、 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 official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN mem
14、ber 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 Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Swe
15、den, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1992 Copyright reserved to CEN members Ref. No. EN 25827:1992 EEN25827:1992 2 BSI 11-1999 Foreword In
16、 September 1991, CEN Technical Board decidedto submit the International Standard ISO5827:1983 “Spot welding Electrode back-ups and clamps” to the formal vote procedure. The result was positive and the standard is now adopted as a European Standard. National standards identical to this EuropeanStanda
17、rd shall be published at the latest by 1992-11-30 and conflicting national standards shall be withdrawn at the latest by 1992-11-30. According to the CEN/CENELEC Common Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany,
18、Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of the International Standard ISO5827:1983 was approved by CEN as a European Standard without any modification. Contents Page Foreword 2 1 Scope and
19、field of application 3 2 References 3 3 Dimensions 3 4 Application 9 Figure 1 Dimensions of the back-up profile Form A 3 Figure 2 Dimensions of the wedge electrodes Forms B, C and D 5 Figure 3 Dimensions of clamps Forms E and F 6 Figure 4 Dimensions of back-up with coolingholes 7 Figure 5 Layout of
20、the assembled back-up 8 Figure 6 Representation of a back-up 8-25 9 Table 7EN25827:1992 BSI 11-1999 3 1 Scope and field of application This International Standard lays down the dimensions and specifies characteristics of spot welding electrode back-ups and clamps. 2 References ISO 426-2, Wrought cop
21、per-zinc alloys Chemical composition and form of wrought products Part2:Leaded copper-zinc alloys. ISO 1302, Technical drawings Method of indicating surface texture on drawings. ISO 5182, Materials for resistance welding electrodes and ancillary equipment. 3 Dimensions 3.1 Back-up profile (semi-fini
22、shed product) The dimensions of the back-up profile (semi-finished product) shall be as shown in Figure 1. 3.1.1 Material The material shall be A 1/1, as specified in ISO 5182. 3.1.2 Designation The designation shall consist, in order, of the words“back-up profile”, the number of this International
23、Standard, the form letter and the length of the back-up profile. Example: a back-up profile form A and a length of2000 mm: Back-up profile ISO 5827 A 2000 3.2 Wedge electrodes The dimensions of the wedge electrode shall be as shown in Figure 2 for form B, C or D. 3.2.1 Material The material shall be
24、 A 2/2, as specified in ISO 5182. 3.2.2 Marking Wedge electrodes to this International Standard shall be marked with the form letter and the material grade. Figure 1 Dimensions of the back-up profile Form AEN25827:1992 4 BSI 11-1999 3.2.3 Designation The designation shall consist, in order, of the w
25、ords “wedge electrode”, the number of this International Standard, the form letter and the electrode length. Example: a wedge electrode form B and length equal to 50 mm would have the designation: Wedge electrode ISO 5827 B 50 3.3 Clamps The dimensions of the clamp shall be as shown in Figure 3. 3.3
26、.1 Material The material shall be copper-zinc alloy (brass) Cu Zn40 Pb2 as specified in ISO 426-2, or similar. 3.3.2 Marking Clamps to this International Standard shall be marked with the form letter and the width b 1 . 3.3.4 Designation The designation shall consist, in order, of the word “clamp”,
27、the number of this International Standard, the form letter and the width of the clamp. Example: a clamp form E and b 1equal to 35 mm shall be designated as follows: Clamp ISO 5827 E 35 Example: a clamp form F and b 1equal to 20 mm shall be designated as follows: Clamp ISO 5827 F 20EN 25827:1992 BSI
28、11-1999 5 NOTEFor forms C and D, all other dimensions are as for form B. Figure 2 Dimensions of the wedge electrodes Forms B, C and DEN 25827:1992 6 BSI 11-1999 NOTEFor form F, all other dimensions are as for form E. Figure 3 Dimensions of clamps Forms E and FEN25827:1992 BSI 11-1999 7 3.4 Back-ups
29、with cooling holes (finished) The dimensions of the back-up profile (finished) shall be as shown in Figure 4 and given in the Table. 3.5 Layout of assembled back-ups The layout of the assembled back-up shall be as given in Figure 5. Dimensions in millimetres, surface roughness values in micrometres
30、Table Distance between spots a b 2c Wedge electrode Clamp 25 4 38 19 Form B E 18 31,5 4 48 13 Form C E 18 40 4 55,5 13 Form C E 25 45 4 60,5 13 Form C E 30 50 4 65,5 13 Form C E 35 56 4 70,6 13 Form C E 40 40 10 62 13 Form D E 20 50 10 72 13 Form D E 30 60 and single spots 35 13 Form C F 20 41 Form
31、D Figure 4 Dimensions of back-up with cooling holes +0,2 0 +0,1 0EN25827:1992 8 BSI 11-1999 Figure 5 Layout of the assembled back-upEN25827:1992 BSI 11-1999 9 4 Application Complete back-ups can be simply represented, e.g. in weld studies, by the number of spots to be welded and the distance between
32、 spots, a, in accordance with the Table in Figure 4. A complete back-up for 8 spots with a distance between spots of 25 mm is shown in Figure 6. Figure 6 Representation of a back-up 8-2510 blankBSEN25827:1992 BSI 11-1999 National annex NA (informative) Committees responsible The United Kingdom parti
33、cipation in the preparation of this European Standard was entrusted by the Welding Standards Policy Committee (WEE/-) to Technical Committee WEE/26 upon which the following bodies were represented: British Non-ferrous Metals Federation British Steel Industry Copper Development Association Electricit
34、y Association Institution of Incorporated Executive Engineers Society of British Aerospace Companies Limited Society of Motor Manufacturers and Traders Limited Welding Institute Welding Manufacturers Association (BEAMA Ltd.) Coopted Members National annex NB (informative) Cross-references Publicatio
35、n referred to Corresponding British Standard a ISO 1302:1978 BS 308 Engineering drawing practice Part 2:1985 Recommendations for dimensioning and tolerancing of size a Where no identical or technically equivalent British Standard exists, the user is directed to the relevant European or International
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