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1、BRITISH STANDARD BS EN ISO 15349-2:2003 Unalloyed steel Determination of low carbon content Part 2: Infrared absorption method after combustion in an induction furnace (with preheating) The European Standard EN ISO 15349-2:2003 has the status of a British Standard ICS 77.040.30 ? Licensed Copy: shef
2、fieldun sheffieldun, na, Sun Nov 19 12:38:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 15349-2:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 25 June 2003 BSI 25 June 2003 ISBN 0 580 42089 2 National foreword This British Sta
3、ndard is the official English language version of EN ISO 15349-2:2003. It is identical with ISO 15349-2:1999. The UK participation in its preparation was entrusted to Technical Committee ISE/18, Sampling and analysis of iron and steel, which has the responsibility to: A list of organizations represe
4、nted on this committee 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 Catalogue under the section entitled “International Standards Correspondence Index”,
5、or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer i
6、mmunity from legal obligations. 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 European developments and promulgate t
7、hem in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 14, the Annex ZA page and a back cover. The BSI copyright date displayed in this document indicates when the d
8、ocument was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15349-2 June 2003 ICS 77.040.30 English version Unall
9、oyed steel - Determination of low carbon content - Part 2: Infrared absorption method after combustion in an induction furnace (with preheating) (ISO 15349-2:1999) Acier non alli - Dtermination des faibles teneurs en carbone - Partie 2: Mthode par absorption dans linfrarouge aprs combustion dans un
10、four induction (avec prchauffage) (ISO 15349-2:1999) Unlegierter Stahl - Bestimmung niedriger Kohlenstoffgehalte - Teil 2: Verfahren mit Infrarotabsorption nach Verbrennung im Induktionsofen (mit Vorwrmung) (ISO 15349-2:1999) This European Standard was approved by CEN on 16 May 2003. CEN members are
11、 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 references concerning such national standards may be obtained on application to t
12、he Management Centre 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 member into its own language and notified to the Management Centre has the same status
13、as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEA
14、N COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 15349-2:2003 E Licensed Co
15、py: sheffieldun sheffieldun, na, Sun Nov 19 12:38:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of ISO 15349-2:1999 has been prepared by Technical Committee ISO/TC 17 “Steel” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 15349-2:2003
16、by Technical Committee ECISS/TC 20 “Methods of chemical analysis“, the secretariat of which is held by SIS. 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 2003, and conflicting national
17、standards shall be withdrawn at the latest by December 2003. According 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,
18、Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 15349-2:1999 has been approved by CEN as EN ISO 15349-2:2003 without any modifications. NOTE Normative references to Int
19、ernational Standards are listed in Annex ZA (normative). EN ISO 153492:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 15349-2:1999(E) INTERNATIONAL STANDARD ISO 15349-2 First edition 1999-12-01 Unalloyed steel Dete
20、rmination of low carbon content Part 2: Infrared absorption method after combustion in an induction furnace (with preheating) Acier non alli Dtermination des faibles teneurs en carbone Partie 2: Mthode par absorption dans linfrarouge aprs combustion dans un four induction (avec prchauffage) EN ISO 1
21、53492:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO -943512:(9991E) DPF dlcsiremia ihTs PDF file mya ctnoain emdeddeb tyfepcaes. In acccnadroe with Aebods licnesign lopic,y this file may be pirntde ro ivwede tub shall ton eb idete
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25、l, inclidugn tohpociypong dna micrfoilm, wittuoh repmissino in writing form eitreh ISO at teh erddass lebwo ro ISOs memreb ydob in the ctnuoyr of the rtseuqee.r ISO cirypothg fofice saCe tsopale 65 ? 1121-HC aveneG 20 leT. + 41 22 947 10 11 xaF + 14 22 437 01 97 E-mail cirypothgiso.ch eWb www.iso.ch
26、 Printed in Switzlredna ii EN ISO 153492:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii ContentsPage 1Scope 1 2Normative references1 3Principle1 4Reagents.2 5Apparatus.3 6Sampling and preparation of the test samples.4 7Procedure.4
27、8Expression of results 7 Annex A (informative) Features of commercial high-frequency induction furnaces and infrared carbon analysers 9 Annex B (informative) Additional information on international cooperative tests.11 Annex C (informative) Graphical representation of precision data .14 EN ISO 15349
28、2:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Stand
29、ards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also ta
30、ke part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted b
31、y the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subjec
32、t of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 15349 was prepared by Technical Committee ISO/TC 17,Steel, Subcommittee SC 1, Methods of determination of chemical composition. ISO 15349 consists of the following parts, u
33、nder the general titleUnalloyed steel Determination of low carbon content: ?Part 1: Infrared absorption method after combustion in an electric resistance furnace (by peak separation) Technical Report ?Part 2: Infrared absorption method after combustion in an induction furnace (with preheating) ?Part
34、 3: Infrared absorption method after combustion in an electric resistance furnace (with preheating) Technical Report Annexes A, B and C of this part of ISO 15349 are for information only. EN ISO 153492:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:58 GMT+00:00 2006, Uncontrolled
35、Copy, (c) BSI INTENRAITONAL TSANDADRISO -943512:(9991E) 1 Unalloyed steel Determination of low carbon content Part 2: Infrared absorption method after combustion in an induction furnace (with preheating) 1Scope This part of ISO 15349 specifies an infrared absorption method after combustion in an ind
36、uction furnace for the determination of the low carbon content in unalloyed steel. The method is applicable to carbon contents between 0,000 3 % (m/m) and 0,010 % (m/m). 2Normative references The following normative documents contain provisions which, through reference in this text, constitute provi
37、sions of this part of ISO 15349. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 15349 are encouraged to investigate the possibility of applying the most recent editions of the normative
38、 documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 648:1977,Laboratory glassware One-mark pipettes. ISO 1042:1998,Laboratory glassware One-mark
39、 volumetric flasks. ISO 3696:1987,Water for analytical laboratory use Specification and test methods. ISO 5725-1:1994,Accuracy (trueness and precision) of measurement methods and results Part 1: General principles and definitions. ISO 5725-2:1994,Accuracy (trueness and precision) of measurement meth
40、ods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method. ISO 5725-3:1994,Accuracy (trueness and precision) of measurement methods and results Part 3: Intermediate measures of the precision of a standard measurement method. ISO
41、14284:1996,Steel and iron Sampling and preparation of samples for the determination of chemical composition. 3Principle Preheating of a test portion at low temperature and combustion of a test portion with accelerator at a high temperature in an induction furnace in a current of pure oxygen. Transfo
42、rmation of carbon into carbon dioxide and/or carbon monoxide. EN ISO 153492:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 Measurement of infrared absorption of the carbon dioxide or carbon dioxide/carbon monoxide evolved from steel
43、and carried by a current of pure oxygen. Calibration graph is established using sucrose or calcium carbonate. 4Reagents During the analysis, unless otherwise stated, use only reagents of recognized analytical grade and only grade 3 water as specified in ISO 3696. 4.1Water, free from carbon dioxide.
44、Boil water for 30 min, bubble with oxygen (4.2) while cooling to room temperature for 15 min. Prepare just before use. 4.2Oxygen, 99,95 % (m/m) minimum. An oxidation catalyst copper(II) oxide or platinum tube heated to a temperature above 450 ?C shall be used prior to a purifying unit, when the pres
45、ence of organic contaminants in the oxygen is suspected. 4.3Pure iron, of known very low carbon content less than 0,000 3 % (m/m). 4.4Suitable solvent, appropriate for washing greasy or dirty test samples, e.g., acetone. 4.5Accelerator, copper plate (see NOTE 1) or pellet type tin and granular tungs
46、ten mixture (see NOTE 2) of known very low carbon content less than 0,000 3% (m/m). NOTE 1Copper plate (about 0,1 g/plate) should be used after the following treatment. Heat the copper plate at 450 ?C to 600 ?C for 10 min in a current of oxygen or air and cool in a desiccator without grease. This tr
47、eatment shall be carried out just before use. NOTE 2Pellet type tin (about 0,2 g/pellet) and granular tungsten (only LECOCEL I is applicable) should be used after the following treatment. Heat the tungsten at 450 ?C in air for 10 min and cool in a desiccator without grease. Clean the tin for more th
48、an 5 min by use of hydrochloric acid in an ultrasonic cleaner, rinse in water and dry in air. These treatments shall be carried out just before use. 4.6Standard substances 4.6.1Sucrose, standard solution. Weigh, to the nearest 0,1 mg, the seven masses of sucrose (C12H22O11) (analytical standard grad
49、e) previously dried at 100 ?C to 105 ?C for 2,5 h and cooled in a desiccator, indicated in Table 1 and transfer to seven 100 ml beakers. Add 30 ml of water (4.1) to dissolve, transfer to seven 100 ml one-mark volumetric flasks quantitatively, dilute to the mark with water (4.1) and mix. EN ISO 153492:2003 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 12:38:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 Table 1 Standard solution series