1、Projections for resistance welding (IS0 81 67 : 1989) English version of DIN EN 28 167 Buckel zum Widerstandsschweien (IS0 8167 : 1989) DIN EN 28 167 This standard incorporates the English version of Is0 81 67. Supersedes parts of DIN 8519, July 1978 edition. European Standard EN 28 167 : 1992 has t
2、he status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been published in accordance with a decision taken by CEN/BTto adopt, without alteration, International Standard IS0 81 67 : 1989 (prepared by ISO/TC 44) as a European Standard. The responsible Ge
3、rman body involved in the preparation of this standard was the Normenausschu Schweitechnik (Welding Standards Committee). In respect of circular projections, IS0 8167 is identical to DIN 8519, but as regards elongated and annular projections, DIN 8519 continues to be applicable. Standard referred to
4、 (and not included in Normative references) DIN 8519 (at present at the stage of draft) Projections for projection welding of sheet steel; enlongated and annular pro- jections Previous edition DIN 8519: 07.78. Amendments In comparison with DIN 8519, July 1978 edition, elongated and annular projectio
5、ns are no longer covered. International Patent Classification B 23 K 11/14 EN comprises 5 pages. Beuth Verlag GrnbH, Berlin, has the exclusive right of sale for German Standards (DIN-Normen). DIN EN 28 167 Engl. Price group 6 04.93 Sales No. 1106 EUROPEAN STANDARD NORME EUROPEENNE EN 28 167 EUROPAIS
6、CHE NORM May 1992 UDC 621.791.76.053.95 Descriptors: Welding, resistance welding, projections, dimensions, designation. English version Projections for resistance welding (IS0 81 67 : 1989) Bossages pour le soudage par rsis- tance (IS0 81 67 : 1989) Buckel zum Widerstandsschweien (IS0 8167 : 1989) T
7、his European Standard was approved by CEN on 1992-05-22 and is identical to the IS0 Standard as referred to. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterat
8、ion. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any GEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translat
9、ion 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,
10、Netherlands, Norway, Por- tugal, Spain, Sweden, 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 O 1992. Copyright reserved to all CEN members. Ref. No. EN
11、 28 167 : 1992 E Page 2 EN 28 167 : 1992 Foreword In 1991, CEN/BT decided to submit International Standard IS0 8167 : 1989 Projections for resistance welding to Formal Vote. The result was positive and the standard is now adopted as a European Standard. In the countries bound to implement this Europ
12、ean Standard, a national standard identical to this European Standard shall be published, and conflicting national standards withdrawn, by 1992-1 1-30 at the latest. In accordance with the CENKENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria
13、, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of the International Standard IS0 8167 : 1989 was approved by CEN as a European Standard without any mo
14、difi- cation. 1 Scope Page 3 EN 28 167 : 1992 60 This International Standard specifies the characteristics and dimensions of projections for resistance welding; it also includes the appropriate design and dimensions for tools (see annex BI. The projections may be used on either hot-rolled or cold-ro
15、lled, uncoated mild steel, of conventional welding quaiity and up to 3 mrn thick, as single projections, in multiples or as a group of multiples. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this International Standa
16、rd. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this International Standard are encwrag- ed to investigate the possibility of applying the most recent edi- tion of the standard indicated below. Members of IEC
17、and IS0 maintain registers of currently valid International Standards. IS0 286-1 : 1988. IS0 System of limits and fits - Part I: Bases of tolerances, deviations and fits. 3 Dimensions The dimensions shall be as specified in figure 1 and table 1. The tolerance on the projection diameter, d, shall be
18、+ o“. mm; the tolerance on the projection height, a, shall be f 10 %, except in the case where a number of projections are to be welded in one operation, when the height of the individual pro- jections on any of the components comprising the assembly shall not vary by more than 5 % from one another.
19、 NOTES 1 The height, a, is determined by the punch stroke. 2 If sheet thicknesses are different, the projection should be manufactured in the thicker sheet with the dimensions of the thinner sheet. + See annex A for relationship between sheet thickness, , and pro- jection diameter, dl. Figure 1 - Pr
20、ojection for resistance welding Table 1 - Dimensions Dimensions in millimetres di) +0,1 O 1.6 2 2.5 3.2 4 5 63 8 10 0.4 0.5 0.63 0.8 1 1.25 1.6 2 2.5 d2 1 i The diameter of the forming tool, d3, shall be greater than or equal to dl; an example of a forming tool is given in annex B. 2) See clause 3 f
21、or tolerance on the height, u. 4 Designation Projections (P) covered by this International Standard shall be designated using the following information in the order given: a) the description (;.e. “Projection“); b) the reference of this International Standard; c) the projection diameter, dl, in mill
22、imetres. Example: A projection with a diameter, d, of 2.5 mm shall be designated as follows: Projection IS0 8167-P2.5 Page 4 EN 28 167 : 1992 Sheet thicknees 1 1 0 d,; for other dimensions, see table 1. All unspecified dimensions to be produced within the relevant toierances in accordsnce with IS0 286-1. Figure 6.1 - Tool dimensions
