DIN EN 13603-2013 Copper and copper alloys - Test methods for assessing protective tin coatings on drawn round copper wire for electrical purposes German version EN 13603 2013《铜和铜合.pdf

1、August 2013 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS

2、 25.220.40; 77.150.30!%(6“2051991www.din.deDDIN EN 13603Copper and copper alloys Test methods for assessing protective tin coatings on drawn roundcopper wire for electrical purposes;English version EN 13603:2013,English translation of DIN EN 13603:2013-08Kupfer und Kupferlegierungen Prfverfahren zur

3、 Beurteilung von Schutzberzgen aus Zinn auf gezogenenRunddrhten aus Kupfer fr die Anwendung in der Elektrotechnik;Englische Fassung EN 13603:2013,Englische bersetzung von DIN EN 13603:2013-08Cuivre et alliages de cuivre Mthodes dvaluation des revtements en tain sur les fils ronds tirs en cuivre pour

4、usages lectriques;Version anglaise EN 13603:2013,Traduction anglaise de DIN EN 13603:2013-08SupersedesDIN EN 13603:2002-07www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1707.13 DIN EN 13603:2013-08 2 A comma is used as the decimal

5、 marker. National foreword This document (EN 13603:2013) has been prepared by Technical Committee CEN/TC 133 “Copper and copper alloys” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Nichteisenmetalle (Nonferrous Metals Standards Committe

6、e), Working Committee NA 066-02-04 AA Strangpress- und Zieherzeugnisse. Amendments This standard differs from DIN EN 13603:2002-07 as follows: a) the standard has been editorially revised. Previous editions DIN EN 13603: 2002-07 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13603 June 2013 IC

7、S 25.220.40; 77.150.30 Supersedes EN 13603:2002English Version Copper and copper alloys - Test methods for assessing protective tin coatings on drawn round copper wire for electrical purposes Cuivre et alliages de cuivre - Mthodes dvaluation des revtements en tain sur les fils ronds tirs en cuivre p

8、our usages lectriques Kupfer und Kupferlegierungen - Prfverfahren zur Beurteilung von Schutzberzgen aus Zinn auf gezogenen Runddrhten aus Kupfer fr die Anwendung in der Elektrotechnik This European Standard was approved by CEN on 25 April 2013. CEN members are bound to comply with the CEN/CENELEC In

9、ternal 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 references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to a

10、ny 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 member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official

11、versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norw

12、ay, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in a

13、ny form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13603:2013: EEN 13603:2013 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Thickness of the unalloyed tin coating .4 5 Continuity of the tin coating 10 6 Adherence of the

14、tin coating . 12 7 Test report . 14 Bibliography . 15 Figures Figure 1 Alternative method for supporting fine wire or wire which cannot be straightened 6 Figure 2 Preparation of the test piece . 13 Tables Table 1 Test parameters . 11 DIN EN 13603:2013-08 EN 13603:2013 (E) 3 Foreword This document (E

15、N 13603:2013) has been prepared by Technical Committee CEN/TC 133 “Copper and copper”, 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 by endorsement, at the latest by December 2013, and c

16、onflicting national standards shall be withdrawn at the latest by December 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This

17、document supersedes EN 13603:2002. In comparison with EN 13603:2002, the following changes have been made: Editorial modifications. Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 4 “Extruded and drawn products, forgings and scrap“ to prepare the revision of the

18、following standard: EN 13603:2002, Copper and copper alloys Test methods for assessing protective tin coatings on drawn round copper wire for electrical purposes According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement

19、this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slov

20、akia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 13603:2013-08 EN 13603:2013 (E) 4 1 Scope This European Standard specifies methods for assessing the tin coating on drawn round copper wire for the manufacture of electrical conductors, e.g. according to EN 13602. This

21、 European Standard includes test methods for the determination of the following characteristics: a) thickness of the unalloyed tin coating; b) continuity of the tin coating; c) adherence of the tin coating. WARNING This European Standard can involve the use of hazardous materials, operations, and eq

22、uipment. This standard does not purport to address all of the safety problems associated with their use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 2 Normative refe

23、rences The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

24、EN 610, Tin and tin alloys Ingot tin 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 unalloyed tin coating layer of pure tin on the surface of tinned wire 3.2 alloyed tin coating diffusion layer of copper and tin formed at the copper wire and

25、 tin coating interface during tinning and subsequent drawing and annealing processes 3.3 total tin coating sum of the thicknesses of the unalloyed tin coating and the alloyed tin coating 3.4 measuring area area of the surface over which a single measurement is made 4 Thickness of the unalloyed tin c

26、oating 4.1 Principle Anodic dissolution of a well-defined area of the unalloyed coating using a suitable electrolyte, followed by detection of the virtually complete dissolution of the unalloyed coating by a rapid change in cell voltage. DIN EN 13603:2013-08 EN 13603:2013 (E) 5 Calculation of the un

27、alloyed coating thickness from the quantity of electricity (in coulombs) used, which can in turn be calculated from: a) the time interval between the start of the test and the first rapid change of cell voltage, if it is conducted at constant current density; or b) the integrated quantity of electri

28、city used in dissolving the unalloyed coating. 4.2 Reagents and materials 4.2.1 Electrolyte, either a hydrochloric acid electrolyte or an electrolyte recommended by the instrument manufacturer. For the hydrochloric acid electrolyte, dilute 170 ml of hydrochloric acid (HCl), = 1,18 g/ml, to 1 000 ml

29、with deionised water. NOTE The unalloyed tin coating dissolves anodically at an efficiency of nearly 100 %; for determination of the electrolyte efficiency, see 4.5.6. WARNING Hydrochloric acid causes burns and is irritating to the respiratory system. Avoid breathing the vapour and prevent contact w

30、ith eyes and skin. This electrolyte dissolves tin coatings at very low cell voltages at which there is no anodic attack on the substrates when they are exposed at the end of the test. 4.2.2 Tin, tin grade in accordance with EN 610. 4.3 Apparatus Suitable instruments may be constructed from readily a

31、vailable components. Alternatively, a proprietary instrument may be used. 4.3.1 Direct reading instruments Proprietary direct reading instruments are available for use with electrolytes recommended by the manufacturer. The calculation of thickness of tin coating from current density is made electron

32、ically. The instrument shall have some means of indicating when the unalloyed tin coating has been fully removed. 4.3.2 Other instruments Instruments other than proprietary direct reading instruments record the quantity of electricity, in coulombs, used in dissolving the unalloyed coating from the m

33、easuring area, usually in arbitrary units, from which the thickness can be calculated using factors or tables. 4.3.3 Electrolytic cell The electrolytic cell consists of a container for the electrolyte, a cathode and an anode, which is the test sample. If the container is made of metal, such as stain

34、less steel, the container can serve as the cathode. If the container is made of insulating material, a separate cathode is required. Also required are a device for supporting the appropriate length of the test sample and an agitation mechanism. Depending on the wire diameter, the test sample may be

35、a straight length of wire or, if necessary to obtain sufficient surface area for smaller diameter wires, a holding device such as that shown schematically in Figure 1 is required. A magnetic stirrer or similar system shall be used to provide agitation. DIN EN 13603:2013-08 EN 13603:2013 (E) 6 Key 1

36、tee-frame to support test piece of non-conducting material, manufactured from nylon or other plastics 2 test piece 3 test piece connection (anode) 4 cathode connection 5 electrolyte level 6 test piece length L 7 electrolyte 8 non-metallic pin 9 cathode (stainless steel or lead), container (beaker) F

37、igure 1 Alternative method for supporting fine wire or wire which cannot be straightened 4.4 Preparation of the test piece Select a suitable length of test sample in order to provide the appropriate test piece area for exposure to the electrolyte. If necessary, clean the test surface with a suitable

38、 organic solvent (see 4.5.4.5). Care should be taken to avoid removal of metal during the cleaning operation. 4.5 Procedure for determining the thickness of unalloyed tin coatings 4.5.1 General If commercial equipment is used, follow the manufacturers instructions with respect to the operating proce

39、dure for measurement, the electrolyte and, if necessary, calibration. Appropriate attention shall be given to the factors listed in 4.5.4. The performance of the instrument shall be checked using a reference specimen of pure tin wire. A tin grade in accordance with EN 610 shall be used. The test sha

40、ll be carried out in accordance with 4.5.6. If the instrument readings or the calculation of K give an electrolytic efficiency of equal to or greater than 98 %, the instrument may be used without further adjustment. Otherwise, the cause of discrepancy shall be remedied. Proprietary instruments shall

41、 be calibrated in accordance with the manufacturers instructions. DIN EN 13603:2013-08 EN 13603:2013 (E) 7 4.5.2 Determination of measuring area For the determination of the measuring area, the length L of the test piece in millimetres shall be determined with an accuracy of 1 % and the diameter d o

42、f the test piece for wires with a nominal diameter of 0,6 mm shall be determined with an accuracy of 1 % and for wires with a nominal diameter of 0,6 mm with an accuracy of 0,5 %. The measuring area A in square centimetres is given by the Formula (1): 100 L d= A(1) NOTE An exact area of stripping is

43、 necessary for accuracy and the main source of error is due to the meniscus and current field at the electrolyte surface. 4.5.3 Electrolysis (Dissolution of the unalloyed tin coating) The electrolyte (4.2.1) and test piece shall be introduced into the cell so that a known area is exposed to the elec

44、trolyte. Efforts shall be made to ensure that no gas bubbles occur on the measuring area by use of the agitation mechanism. The electrical connections shall be made and the agitator operated. Electrolysis shall be continued until dissolution of the unalloyed tin coating is complete, as indicated by

45、a sharp change in the anode potential or cell voltage, or by the operation of the automatic cut-out. After completion of the test, the test piece shall be removed from the cell, rinsed with water and examined to ensure that complete removal of the unalloyed tin coating has occurred over the measurin

46、g area (see 4.5.4.9). 4.5.4 Factors affecting the measuring accuracy 4.5.4.1 Coating thickness The optimum accuracy is achieved with coating thicknesses in the range 0,2 m up to 50 m. 4.5.4.2 Current variation For instruments using the constant current and time measuring technique, current variation

47、 will cause errors. For instruments using a current-time integrator, too large a change in current can change the anode current efficiency or interfere with the end-point, causing an error. 4.5.4.3 Area variation The accuracy of the thickness measurement will be no better than the accuracy to which

48、the measuring area is known. Area variations due to electrolyte level (excessive agitation), can lead to measurement errors. In some cases it can be advantageous to measure the length after electrolysis is complete and re-calculate the area. 4.5.4.4 Agitation Agitation (i.e. the rate of stirring) shall be sufficient to remove any gas bubbles formed during the test, which can adhere to the test piece or cathode. Excessive agitation shall be avoided to prevent interference with the length of test piece su