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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12019 : 1998 The Eu
2、ropean Standard EN 12019 : 1997 has the status of a British Standard ICS 77.120.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Zinc and zinc alloys Optical emission spectrometric analysis Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 16:15:33 GMT+00:00 2006, Uncon
3、trolled Copy, (c) BSI 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 1998 BSI 1998 ISBN 0 580 28809 9 BS EN 12019 : 1998 Amendments issued since publication
4、 Amd. No.DateText affected National foreword This British Standard is the English language version of EN 12019 : 1997. It supersedes BS 1225 : 1970 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee NFE/8, Zinc and zinc alloys, to Subcommittee NFE/8/4, A
5、nalysis of zinc and zinc alloys, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Euro
6、pean developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI St
7、andards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a
8、 front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back cover. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 16:15:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN European Committee for Standardization Comite Europe en de Normalisation Europa
9、isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12019 : 1997 E EUROPEAN STANDARDEN 12019 NORME EUROPE ENNE EUROPA ISCHE NORM October 1997 ICS
10、 77.120.60 Descriptors: Zinc, zinc alloys, chemical analysis, determination, chemical composition, emission spectrophotometry, optical tests, specimen preparation English version Zinc and zinc alloys Optical emission spectrometric analysis Zinc et alliages de zinc Analyse par spectrome trie de missi
11、on optique Zink und Zinklegierungen Analysenverfahren durch Emissionsspektrometrie This European Standard was approved by CEN on 26 September 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of
12、 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 versions (English, French, German). A versio
13、n 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, Czech Republic, Denmark, Finland, France
14、, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 16:15:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 12019 : 1997 BSI 1998 Foreword This European Stan
15、dard has been prepared by Technical Committee CEN/TC 209, Zinc and zinc alloys, the secretariat of which is held by AFNOR. 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 April 1998, and conflicti
16、ng national standards shall be withdrawn at the latest by April 1998. Within its programme of work, Technical Committee CEN/TC 209 entrusted CEN/TC 209/SC3, Methods of analysis and testing, to prepare the following document: EN 12019 Zinc and zinc alloys Optical emission spectrometric analysis Accor
17、ding to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal
18、, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 3.1ingot3 3.2batch3 3.3cast3 3.4sample3 3.5test piece3 3.6optical emission spectrometry3 4Sampling3 5Preparation of test pieces3 6Testing3 6.1General3 6.2Calibration3 6.3Method o
19、f testing3 6.4Expression of results3 6.5Test report3 Annexes A(informative) Selection of analytical lines4 B(normative) Reproducibility4 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 16:15:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 12019 : 1997 BSI 1998 1 Scope This European St
20、andard specifies analytical methods of testing chemical composition of zinc and zinc alloys in accordance with EN 1179, EN 1774, prEN 12844, and EN 988 by optical emission spectrometry. Included are provisions for preparation of test pieces of zinc and zinc alloys. 2 Normative references This Europe
21、an Standard 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 ap
22、ply 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 1774Zinc and zinc alloys Alloys for foundry purposes Ingot and liquid prEN 12844Zinc and zinc alloys Castings Specifications EN 1
23、2060Zinc and zinc alloys Method of sampling Specifications EN 988Zinc and zinc alloys Specifications for rolled flat products for building EN 1179Zinc and zinc alloys Primary zinc 3 Definitions For the purposes of this standard the following definitions apply. 3.1 ingot Cast product intended for rem
24、elting (EN 1179 : 1995). 3.2 batch Number of ingots taken from a single cast (EN 1179 : 1995). 3.3 cast 3.3.1 cast for non-continuous casting Product of one furnace, or crucible melt (EN 1179 : 1995). 3.3.2 cast for continuous casting Identified volume of liquid metal (EN 1179 : 1995). 3.4 sample Po
25、rtion of the product, representative of its chemical composition. 3.5 test piece Final form of the material submitted for analysis. 3.6 optical emission spectrometry Measurement of the intensity of electromagnetic radiations emitted by the components of the sample when excited. Each element emits ra
26、diation of well defined and specific wavelength and its intensity is linked to its concentration. 4 Sampling Sampling shall be in accordance with EN 12060. 5 Preparation of test pieces Test pieces shall be prepared so that they are suitable for optical emission spectrometry. Shape and size of test p
27、ieces are dependent upon device and apparatus used. The surface of test pieces shall be prepared according to requirements given in the operation manual of the apparatus used. 6 Testing 6.1 General The test shall be carried out by optical emission spectrometry using solid test pieces prepared accord
28、ing to clause 5. For the analysis of the impurities and alloying elements in zinc and zinc alloys as defined in EN 1179, EN 1774, prEN 12844 and EN 988 by optical emission spectrometry, different analytical lines can be used. A selection of the wavelengths of analytical lines is listed in annex A. W
29、hich one of the different analytical lines to be used is influenced by the analytical program and the type of instrument. The reproducibility of the apparatus used shall be in accordance with the values given in annex B. 6.2 Calibration The apparatus used shall be capable and suitable for the detect
30、ion and determination of all elements specified in the relevant material standard (see clause 6). The device shall be calibrated within a reasonable time in accordance with the procedures described in the operation manual. As samples, certified reference materials (CRM) shall be used primarily, refe
31、rence materials (RM) secondarily and internal reference materials (IRM) last of all. The reference material used for calibrating the device shall have similar physical and chemical properties to the sample to be analysed. 6.3 Method of testing In general each test piece shall be tested at least two
32、times. If heterogeneity or malfunction of the spectrometer are suspected additional tests shall be performed on the same sample with a new surface. 6.4 Expression of results Test results shall be given as mass fraction, calculated as the arithmetic mean of all valid single results of the test sequen
33、ce according to 6.3 excluding failing single test. Results shall be expressed as defined in EN 1179, EN 1774, prEN 12844 and EN 988. 6.5 Test report The test report shall include the following items: a) identification of sample; b) test result of each test sequence according to 6.4; c) name of labor
34、atory or testing organization; d) date of test; e) number of this European standard (EN 12019); f) signature of the laboratory manager or other responsible person. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 16:15:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 12019 : 1997 BSI 19
35、98 Annex A (informative) Selection of analytical lines Analytical lines (nm) for analysis of zinc and zinc alloys by optical emission spectrometry. Table A.1 ElementAnalytical lines nm Zn267,05 481,05 250,20 Pb405,78 363,90 283,31 Cd228,80 226,50 361,05 214,41 Fe302,06 371,99 Cu327,30 296,10 324,75
36、510,55 550,50 200,00 Sn317,50 Al396,15 308,22 394,40 256,70 266,00 Si288,15 Mg285,20 279,08 382,93 Ni341,48 Cr426,43 425,40 Ti368,52 365,35 337,20 324,19 Annex B (normative) Reproducibility Table B.1 shows typical coefficients of variation of analysis result, obtained from interlaboratory tests and
37、representing the mean of 10 measurements per test piece. Table B.1 ElementContent % (m/m) Coefficient of variation Pb0,014 Cd0,013 Sn0,014 Fe0,014 Cu0,0012 Al0,0014 Al4,02 Mg0,13 Si0,013 Ni0,013 Ti0,13 Cr0,0014 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 16:15:33 GMT+00:00 2006, Uncontrol
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