1、EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 25827 May 1992 UDC 62 1.791.763.1 .O37 Descriptors: Welding, spot welding, welding equipment, retaining flanges, dimensions Enah version Spot welding - Electrode back-ups and clamps (IS0 5827 : 1983) Machines souder par points - Equipements infrie
2、urs et brides de serrage (IS0 5827 : 1983) PunktschweiBeii - Keilelektroden und Klemmstficke ffir Unterkupfer (IS0 5827 : 1983) This European Standard was approved by CEN on 1992-05-22. CEE members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving
3、 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 official version
4、s (English, French, Geiman). 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 Austria, Belgium, Den
5、mark, Wand, France, Geimany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Noiway, Poitugal, Spain, Sweden, Swit,zerland and United Kingdom. CEN European Committee for Standardization Comit Europen de NoimaIisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B
6、-1050 Brussels O 1992 Copyright reserved to CEN members Ref. No. EN 25827 : 1992 E CEN EN*25827 92 3404589 0028907 7 W Page 2 EN 25827 : 1992 Foreword In September 1991, CEN Tkchnical Board decided to submit the International Standard IS0 5827 : 1983 - Spot welding - Electrode back-ups and clamps to
7、 the formal vote procedure. The result was positive and the standard is now adopted as a European Standard. National standards identical to this European Standard shall be published at the latest by 1992-1 1-30 and conflicting national standards shall be withdrawn at the latest by 1992-11-30. Accord
8、ing to the CENKENELEC Common Rules, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, fiance, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands , Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Endorsement noti
9、ce The text of the International Standard IS0 5827 : 1983 was approved by CEN as a European Standard without any modification. Page 3 EN 25827 : 1992 Spot welding - Electrode back-ups and clamps 1 Scope and field of application This International Standard lays down the dimensions and specifies chara
10、cteristics of spot welding electrode back-ups and clamps. 2 References IS0 42612, Wrought copper-zinc alloys - Chemical composi- tion and form of wrought products - Part 2 : Leaded copper- zinc alloys. IS0 1302, Technical drawings - Method of indicating surface texture on drawings. IS0 5182, Materia
11、ls for resistance welding electrodes and an- cillary equipment. 3 Dimensions 3.1 Back-up profile (semi-finished product) The dimensions of the back-up profile (semi-finished product) shall be as shown in figure I. 3.1.1 Material The material shall be A 111, as specified in IS0 5182. 3.1.2 Designatio
12、n The designation shall consist, in order, of the words “back-up profile“, the number of this International Standard, the form letter and the length of the back-up profile. Example : a back-up profile form A and a length of 2 o00 fnm : Back-up profile IS0 5827 A 2 O00 Dimensions in millimetres 62 Fi
13、gure 1 - Dimensions of the back-up profile - Form A CEN EN*25427 92 W 3404549 0028904 O W Page 4 EN 26827 : 1992 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 A 2/2, as specified in IS0 5182. 3.2.2 Ma
14、rking Wedge electrodes to this International Standard shall be marked with the form letter and the material grade. 3.2.3 Designation The designation shall consist, in order, of the words “wedge electrode“, the number of this International Standard, the form letter and the electrode length. Example :
15、 a wedge electrode form B and length equal to 50 mm would have the designation : Wedge electrode IS0 5827 B 50 3.3 Clamps The dimensions of the clamp shall be as shown in figure 3. 3.3. Material The material shall be copper-zinc alloy (brass) Cu Zn4 Pb2 as specified in IS0 426/2, or similar. 3.3.2 M
16、arking Clamps to this International Standard shall be marked with the form letter and the width bl. 3.3.4 Designation The designation shall consist, in order, of the word “clamp“, the number of this International Standard, the form letter and the width of the clamp. Example; a clamp form E and b, eq
17、ual to 35 mm shall be designated as follows : Clamp IS0 5327 E 35 Example . a clamp form F and bl equal to 20 mm shall be designated as follows : Clamp IS0 5827 F 20 CEN EN*25827 92 m 3404589 0028930 7 m In L! +- E 0 E Inn 3E “8 u x c .- C c o, L al O ui E +- E ?= - E C In C O In .- .- .- E no u. !i
18、 m E 9 I I I I I I I I I I I I I I I I I n U c m o m VI O U E I $ 2 U o Q Q al m U al al + - 3 5 Lc O fn c O .- E .- E En .I- w rng $ .F .- E EI U In c O .- 2 b 5 U O - m U. I O z _ In L +- E P E C In al m In al C c o, 3 al .- - eu OE 60 mm and single spots Figure 5 - Layout of the assembled back-up
19、 CEN ENx25827 92 W 3404589 0028933 2 = Page 8 EN 25827 : 1992 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 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. - t+t+i J Back-up 8-25 to IS0 5827 Figure 6 - Representation of a back-up 8-25
