BS-EN-24491-1-1993 ISO-4491-1-1989.pdf
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1、BRITISH STANDARD BS EN 24491-1:1993 ISO 4491-1: 1989 Metallic powders Determination of oxygen content by reduction methods Part 1: General guidelines The European Standard EN 24491-1:1993 has the status of a British Standard UDC 621.762:669-492.2:543.73:546.21 Licensed Copy: sheffieldun sheffieldun,
2、 na, Fri Nov 03 09:15:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 24491-1:1993 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
3、11-1999 The following BSI references relate to the work on this standard: Committee reference ISM/65 Special announcement in BSI News January 1993 ISBN 0 580 21916 X Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepare
4、d, comprises the national standards organizations of the following countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Insti
5、tut fr Normung e.V. GreeceHellenic 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 NorwayNo
6、rges Standardiseringsforbund 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.
7、No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:15:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 24491-1:1993 BSI 11-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Introduction3 1Scope3 2Normative references3 3Sampling3 4
8、Meaning of the results according to the method used4 5Practical application of the standard methods5 6Summary of the implementation of methods for oxygen determination by reduction5 Annex ZA (normative) Normative references to international publications with their relevant European publications6 Nat
9、ional annex NA (informative) Committees responsibleInside back cover National annex NB (informative) Cross-referencesInside back cover Table 1 Content determined depending on method used5 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:15:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN
10、 24491-1:1993 ii BSI 11-1999 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 24491-1:1993 Metallic powders Determination of oxygen content by reduction methods Part 1: General gui
11、delines, published by the European Committee for Standardization (CEN). It is identical with ISO 4491-1:1989, prepared by Technical Committee 119, Powder metallurgy, of the International Organization for Standardization (ISO) with the active participation of the UK. A British Standard does not purpo
12、rt 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 pages This document comprises a front cover, an inside front co
13、ver, 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 the inside front cover. Licensed Copy: sheffieldun sheffieldun,
14、na, Fri Nov 03 09:15:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 24491-1 April 1993 UDC 621.762:669-492.2:543.73:546.21 Descriptors: Powder metallurgy, metallic powder, chemical analysis, determination of content, oxygen, reduction method Englis
15、h version Metallic powders Determination of oxygen content by reduction methods Part 1: General guidelines (ISO 4491-1:1989) Poudres mtalliques Dosage de loxygne par les mthodes de rduction Partie 1: Directive gnrales (ISO 4491-1:1989) Metallpulver Bestimmung des Sauerstoffgehaltes durch Reduktionsv
16、erfahren Teil 1: Allgemeine Hinweise (ISO 4491-1:1989) 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 conditions for giving this European Standard the status of a national standard, without any a
17、lteration. 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 version in any other language made by tr
18、anslation 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemb
19、ourg, 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 Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 244
20、91-1:1993 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:15:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 24491-1:1993 BSI 11-1999 2 Foreword In 1992, ISO 24491-1:1993 Metallic powders Determination of oxygen content by reduction methods Part 1: General guidelines was submitted to th
21、e CEN Primary Questionnaire procedure. Following the positive result of the CEN/CS Proposal ISO 4491-1:1989 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 national standard, either by publication of an identical
22、 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 European Standard: Austria, Belgium, Denmark, Finland
23、, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. NOTEThe European references to international publications are given in Annex ZA (normative). Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 09:15:37 G
24、MT+00:00 2006, Uncontrolled Copy, (c) BSI EN 24491-1:1993 BSI 11-19993 Introduction In powder metallurgy, the purity of the powders is an important parameter for the manufacture of sintered metals. Among the various impurities which may be present in a powder, oxygen plays a particular role as it is
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