BS-EN-24499-1993 ISO-4499-1978.pdf
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1、BRITISH STANDARD BS EN 24499:1993 ISO 4499:1978 Specification for Hardmetals Metallographic determination of microstructure The European Standard EN 24499:1993 has the status of a British Standard UDC 669.018.25:620.186 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:16:34 GMT+00:00 2006,
2、Uncontrolled Copy, (c) BSI BS EN 24499:1993 This British Standard, having been prepared under the direction of the Iron and Steel Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 June 1993 BSI 12-1999 The following BSI references relate
3、 to the work on this standard: Committee reference ISM/65 Special announcement BSI News January 1993 ISBN 0 580 21922 4 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizati
4、ons of the following countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organizatio
5、n for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto
6、 Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun she
7、ffieldun, na, Fri Nov 03 09:16:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 24499:1993 BSI 12-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 1Scope and field of application3 2Symbols and designations3 3Apparatus3 4Preparation of test piece sectio
8、n3 5Procedure3 6Test report3 National annex NA (informative) Committees responsibleInside back cover Figure 1 -phase 1 5005 Figure 2 !-phase 1 5006 Table 13 Table 24 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:16:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 24499:1993 ii BSI 12-
9、1999 National foreword This British Standard has been prepared under the direction of the Iron and Steel Standards Policy Committee and is the English language version of EN 24499:1993 Hardmetals Metallographic determination of microstructure, published by the European Committee for Standardization
10、(CEN). It is identical with ISO 4499:1978, prepared by Technical Committee 119 “Powder metallurgy”, of the International Organization for Standardization (ISO) with the active participation of the UK. This British Standard supersedes BS 5600-4.13:1980, which is withdrawn. This edition makes no techn
11、ical changes to the standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of
12、pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on t
13、he inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:16:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 24499 April 1993 UDC 669.018.25:620.186 Descriptors: Powder metallurgy, hard metals, metallography, microscopic analy
14、sis, microstructure, grain structure English version Hardmetals Metallographic determination of microstructure (ISO 4499:1978) Mtaux-durs Dtermination mtallographique de la microstructure (ISO 4499:1978) Hartmetalle Metallographische Bestimmung der Mikrostruktur (ISO 4499:1978) This European Standar
15、d was approved by CEN on 1993-04-02. CEN members are 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 na
16、tional 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 version in any other language made by translation under the responsibility of a CEN member into its own language and
17、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, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Ki
18、ngdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 24499:1993 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:16:34 GMT
19、+00:00 2006, Uncontrolled Copy, (c) BSI EN 24499:1993 BSI 12-1999 2 Foreword In 1992, ISO 4499:1978 Hardmetals Metallographic determination of microstructure was submitted to the CEN Primary Questionnaire procedure. Following the positive result of the CEN/CS Proposal ISO 4499:1978 was submitted to
20、the Formal Vote. The result of the Formal Vote was positive. 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 October 1993, and conflicting national standards shall be withdrawn at the latest by Oc
21、tober 1993. According to the Internal Regulations of CEN/CENELEC, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and Uni
22、ted Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:16:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 24499:1993 BSI 12-19993 1 Scope and field of application This International Standard specifies methods of metallographic determination of the microstructure of hardmetals. 2 Sym
23、bols and designations Table 1 3 Apparatus 3.1 Metallographic microscope, permitting observations at magnifications up to 1 500 . 3.2 Equipment for preparation of test-piece sections 4 Preparation of test-piece section The test-piece section shall be prepared as for metallographic examination and the
24、 surface to be examined shall be free from grinding and polishing marks. Care shall be taken to avoid tearing out of particles, which may lead to a wrong evaluation of microstructure. NOTEThere are several methods for preparation of hardmetal surfaces for metallographic examination. Firstly, careful
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