BS-EN-24505-1993 ISO-4505-1978.pdf
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1、BRITISH STANDARD BS EN 24505:1993 ISO 4505:1978 Specification for Hardmetals Metallographic determination of porosity and uncombined carbon The European Standard EN 24505:1993 has the status of a British Standard UDC 669.018.25:620.186 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:16:23
2、GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 24505:1993 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 r
3、eferences relate to the work on this standard: Committee reference ISM/65 Special announcement in BSI News, January 1993 ISBN 0 580 21920 8 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national
4、standards organizations 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. Greece
5、Hellenic Organization 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 Standardiseringsforbu
6、nd PortugalInstituto 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 C
7、opy: sheffieldun sheffieldun, na, Fri Nov 03 09:16:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 24505:1993 BSI 12-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 1Scope and field of application3 2Apparatus3 3Preparation of test piece sections3 4Pr
8、ocedure3 5Test report3 National annex NA (informative) Committees responsibleInside back cover Figure 1 Type A apparent porosity ( 100)4 Figure 2 Type A apparent porosity ( 200)5 Figure 3 Type B apparent porosity ( 100)6 Figure 4 Uncombined carbon ( 100)7 Licensed Copy: sheffieldun sheffieldun, na,
9、Fri Nov 03 09:16:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 24505:1993 ii BSI 12-1999 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 24505:1993 Hardmetals Metallographic
10、 determination of porosity and uncombined carbon, published by the European Committee for Standardization (CEN). It is identical with ISO 4505:1978, prepared by Technical Committee 119 “Powder metallurgy”, of the International Organization for Standardization (ISO) with the active participation of t
11、he UK. This British Standard supersedes BS 5600-4.14:1980, which is withdrawn. This edition makes no technical 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.
12、 Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 8, an inside back cover and a back cover. This standard has been updated (see co
13、pyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:16:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 24505 April
14、 1993 UDC 669.018.25:620.186 Descriptors: Powder metallurgy, hard metals, metallography, microscopic analysis, porosity, pores, carbon English version Hardmetals Metallographic determination of porosity and uncombined carbon (ISO 4505:1978) Mtaux-durs Dtermination mtallographique de la porosit et du
15、 carbone non combin (ISO 4505:1978) Hartmetalle Metallographische Bestimmung der Porositt und des ungebundenen Kohlenstoffs (ISO 4505:1978) This European Standard was approved by CEN on 1993-04-02. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditio
16、ns 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 Central Secretariat or to any CEN member. This European Standard exists in three off
17、icial 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria,
18、 Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de
19、 Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 24505:1993 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:16:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 24505:1993 BSI 12-1999 2 Foreword In 1992, ISO 4505:1978 Hardmetals Metallographic determination
20、 of porosity and uncombined carbon was submitted to the CEN Primary Questionnaire procedure. Following the positive result of the CEN/CS Proposal ISO 4505:1978 was submitted to the CEN Formal Vote. The result of the Formal Vote was positive. This European Standard shall be given the status of a nati
21、onal 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 October 1993. According to the Internal Regulations of CEN/CENELEC, the following countries are bound to implement this E
22、uropean Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:16:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
23、 EN 24505:1993 BSI 12-19993 1 Scope and field of application This International Standard specifies methods for the metallographic determination of the presence, type, and distribution of porosity and uncombined carbon in hardmetals. 2 Apparatus 2.1 Metallographic microscope, or other suitable equipm
24、ent permitting observations and measurements on a screen up to the required magnification (see clause 4). 2.2 Equipment for preparation of test-piece sections 3 Preparation of test-piece sections The test-piece section shall be prepared as for metallographic examination and the surface to be examine
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