BS EN 27627-1-1993 Hardmetals - Chemical analysis by flame atomic absorption spectrometry - General requirements《硬质合金 火焰原子吸收光谱法化学分析 第1部分 一般要求》.pdf

《BS EN 27627-1-1993 Hardmetals - Chemical analysis by flame atomic absorption spectrometry - General requirements《硬质合金 火焰原子吸收光谱法化学分析 第1部分 一般要求》.pdf》由会员分享，可在线阅读，更多相关《BS EN 27627-1-1993 Hardmetals - Chemical analysis by flame atomic absorption spectrometry - General requirements《硬质合金 火焰原子吸收光谱法化学分析 第1部分 一般要求》.pdf（10页珍藏版）》请在麦多课文档分享上搜索。

1、BRITISH STANDARD BS EN 27627-1:1993 ISO 7627-1: 1983 Hardmetals Chemical analysis by flame atomic absorption spectrometry Part 1: General requirements The European Standard EN27627-1:1993 has the status of a British Standard UDC 669.018.25:620.1:543.422BSEN27627-1:1993 This British Standard, having

2、been prepared under the directionof the Iron and Steel Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15June1993 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ISM/65 Special announcement i

3、n BSINews January1993 ISBN 0 580 21930 5 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belg

4、ium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland

5、 National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y

6、Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation UnitedKingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN27627-1:1993 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover N

7、ational foreword ii Foreword 2 1 Scope 3 2 Field of application 3 3 Principle 3 4 Interfering elements 3 5 Reagents 3 6 Apparatus 3 7 Sampling 3 8 Procedure 3 9 Test report 3 National annex NA (informative) Committees responsible Inside back cover Table ISO7627 part number, elements and ranges cover

8、ed in the relevant part 3BSEN27627-1:1993 ii BSI 01-2000 National foreword This British Standard has been prepared under the direction of the Iron and SteelStandards Policy Committee and is the English language version of EN27627-1:1993 Chemical analysis by flame atomic absorption spectrometry Part1

9、: General requirements, published by the European Committee for Standardization (CEN). It is identical with ISO 7627-1:1983, prepared by Technical Committee119, Powder metallurgy, of the International Organization for Standardization (ISO) with the active participation of the UK. This British Standa

10、rd supersedes BS5600-4.17.1:1986, 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. Compliance with a Britis

11、h 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, theEN title page, pages 2 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have

12、 had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 27627-1 April 1993 UDC 669.018.25:620.1:543.422 Descriptors: Powder metallurgy, hard metals, chemical analysis, atomic absorption spectrophotomet

13、ry, chemical element, minimum contents, maximum contents, carbides English version HardmetalsChemical analysis by flame atomic absorption spectrometryPart 1: General requirements (ISO 7627-1:1983) Mtaux-dursAnalyse chimique par spectromtrie dabsorption atomique dans la flammePartie 1: Caractristique

14、s gnrales (ISO 7627-1:1983) HartmetalleChemische Analyse durch Flammenabsorptionsspektrometrie Teil 1: Allgemeine Anforderungen (ISO 7627-1:1983) 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 co

15、nditions 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 thr

16、ee 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Au

17、stria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: r

18、ue de Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 27627-1:1993EEN27627-1:1993 BSI 01-2000 2 Foreword In1992, ISO7627-1:1983 Hardmetals Chemicalanalysis by flame atomic absorption spectrometryPart 1: General requirements was submitted to the CEN Primary Questionnai

19、re procedure. Following the positive result of the CEN/CS Proposal ISO 7627-1:1983 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 text or by endorsement,

20、at the latest by October1993, and conflicting national standards shall be withdrawn at the latest by October1993. 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,

21、Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom.EN27627-1:1993 BSI 01-2000 3 1 Scope This part of ISO7627 lays down general requirements for the chemical analysis of hardmetals by flame atomic absorption. Subsequent parts of this Inter

22、national Standard (see theTable) specify methods for determination of the content of the following elements by flame atomic absorption spectrometry. calcium cobalt chromium iron potassium magnesium manganese molybdenum sodium nickel titanium vanadium 2 Field of application The method is applicable t

23、o a) carbides of chromium, niobium, tantalum, titanium, tungsten, vanadium, b) mixtures of these carbides and binder metals, c) all grades of presintered or sintered hardmetals, produced from these carbides, d) coated hardmetals, after total removal of coating, with the elements shown in theTable. T

24、able ISO7627 part number, elements and ranges covered in the relevant part NOTEThe method for the determination of chromium also permits determination of iron, nickel, cobalt and manganese within the range0,01 to2% (m/m). 3 Principle Dissolution of a test portion and determination by flame atomic ab

25、sorption spectrometry. 4 Interfering elements Effects of interference are minimized by using a similar matrix in test and calibration solutions. 5 Reagents During the analysis, use only reagents of recognized analytical grade and only double-distilled water or water of equivalent purity. NOTEIn cert

26、ain cases, reagents of higher purity should be used. 6 Apparatus Ordinary laboratory apparatus and atomic absorption spectrometry apparatus. NOTEAll measurement parameters should be chosen to give optimum sensitivity. Single-element hollow-cathode lamps are recommended. Therecommended instrument req

27、uirements are shown in the relevant parts of this International Standard. 7 Sampling 7.1 If necessary, the sample may be crushed in a mortar made of a material which does not alter the sample composition. If the sample contains lubricant, this shall be extracted before the analysis. 7.2 The analysis

28、 shall be carried out on at least three test portions. 8 Procedure The procedure is given in the relevant parts of this International Standard. 9 Test report The test report shall include the following information: a) a reference to this International Standard; b) all details necessary for identific

29、ation of the test sample; c) the results obtained,i.e.the arithmetical mean; d) all operations not specified by this International Standard, or regarded as optional; e) details of any occurrence which may have affected the result. Relevant part of ISO7627 Element Range % (m/m) 7627-2 7627-3 7627-4 7

30、627-5 7627-6 Ca, K, Mg, Na Co, Fe, Mn, Ni Mo, Ti, V Co, Fe, Mn, Mo, Ni, Ti, V Cr 0,001to0,02 0,01to0,5 0,01to0,5 0,5to2 0,01to24 blankBSEN27627-1:1993 BSI 01-2000 National annex NA (informative) Committees responsible The UnitedKingdom participation in the preparation of this European Standard was e

31、ntrusted by the Iron and Steel Standards Policy Committee (ISM/-) to Technical Committee ISM/65, upon which the following bodies were represented: British Hardmetal Association Federation of British Engineers (Test Manufacturers) Society of Motor Manufacturers and Traders Limited Coopted memberBS EN

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