1、BRITISH STANDARD BS EN 29455-1:1994 ISO 9455-1: 1990 Soft soldering fluxes Test methods Part1: Determination of non-volatile matter, gravimetric method The European Standard EN29455-1:1993 has the status of a British Standard UDC 621.791.35.048:543.21:543.7BSEN29455-1:1994 This British Standard, hav
2、ing been prepared under the directionof the Non-ferrous Metals Standards Policy Committee, was published underthe authority of the Standards Board and comes intoeffect on 15February1994 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference NFM/27 Draft for
3、 comment90/35475 DC ISBN 0 580 22254 3 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 Belgiu
4、m 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 N
5、ational 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 Ce
6、rtificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN29455-1:1994 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover Na
7、tional foreword ii Foreword 2 1 Scope 3 2 Normative reference 3 3 Principle 3 4 Apparatus 3 5 Procedure 3 6 Expression of results 3 7 Precision 3 8 Test report 4 Annex ZA (normative) Normative references to international publications with their relevant European publications 5 National annex NA (inf
8、ormative) Committees responsible Inside back cover National annex NB (informative) Cross-reference Inside back cover Table 1 Precision data 4BSEN29455-1:1994 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Non-ferrous Metals Standards Policy Commit
9、tee. It is the English language version of EN29455-1:1993 Soft soldering fluxes Test methods Part1: Determination of non-volatile matter, gravimetric method published by the European Committee for Standardization (CEN). It partially supersedes BS5625:1980 which will be withdrawn following publicatio
10、n of other European standards in this series. EN29455-1:1993 is identical with ISO9455-1:1990 published by the International Organization for Standardization (ISO). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible f
11、or 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 cover, pagesi andii, theEN title page, pages2 to6, an inside back cover and a back cover. This standard
12、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.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN29455-1 November1993 UDC 621.791.35.048:543.21:543.7 Descriptors: Soldering, soldering fluxes, t
13、ests, determination of content, non volatile matter, gravimetric analysis English version Soft soldering fluxes Test methods Part1: Determination of non-volatile matter, gravimetric method (ISO9455-1:1990) Flux de brasage tendre Mthodes dessai Partie1: Dosage des matires non volatiles par gravimtrie
14、 (ISO9455-1:1990) Flussmittel zum Weichlten Prfverfahren Teil1: Bestimmung nichtflchtiger Stoffe, gravimetrische Methode (ISO9455-1:1990) This European Standard was approved by CEN on1993-11-15. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions
15、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 offici
16、al 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, Be
17、lgium, 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 St
18、assart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 29455-1:1993EEN29455-1:1993 BSI 12-1999 2 Foreword In1993 the International Standard ISO9455-1:1990 Soft soldering fluxes Test methods Part1: Determination of non-volatile matter, gravimetric method was submitted to the fo
19、rmal vote. The result 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 May1994, and conflicting national standards shall be withdrawn at the latest by May1994. In accordance with the
20、CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. NOTENormative refere
21、nces to international publications are listed inAnnex ZA (normative).EN29455-1:1993 BSI 12-1999 3 1 Scope This part of ISO9455 specifies a gravimetric method for the determination of the content of non-volatile matter in soft soldering fluxes. It is applicable to liquid and paste fluxes of type1, as
22、 defined in ISO9454-1. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this part of ISO9455. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements
23、based on this part of ISO9455 are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO9454-1:, Soft soldering fluxes Classification and requirements Par
24、t1:Classification, labelling and packaging 1) . 3 Principle A prepared, weighed sample of the flux is heated in a boiling water bath and then in an oven to drive off volatile matter. The cooled sample is re-weighed and the percentage of non-volatile matter is calculated. 4 Apparatus Ordinary laborat
25、ory apparatus and 4.1 Petri dish, thin section glass nominally100mm diameter. 4.2 Weighing pipette,20ml to25ml capacity, for sampling liquid fluxes. 4.3 Boiling water bath 4.4 Drying oven, maintained at a temperature of110 C 2 C. 4.5 Desiccator, containing silica gel as the desiccant. 5 Procedure Ca
26、rry out the following procedure in triplicate on the flux sample. Dry the glass Petri dish(4.1) in the oven(4.4). Cool the dish in the desiccator to room temperature and weigh to the nearest0,001g. Transfer to the dish sufficient of the sample, weighed to the nearest0,001g, to yield between0,5g and1
27、,0g of non-volatile matter, taking steps to prevent loss of volatile matter during the weighing. For liquid samples the use of the weighing pipette(4.2) is recommended. Heat the dish and contents on a boiling water bath(4.3) to evaporate the bulk of the volatile matter. NOTE 1For samples already of
28、a low volatile content, this preliminary drying may be omitted. Remove the Petri dish(4.1) from the boiling water bath(4.3) and wipe the outside of the dish to remove condensed water. Place the dish and contents in the oven and dry for3h at110 C 2 C. Cool in the desiccator to room temperature and we
29、igh the dish and residue to the nearest0,001g. NOTE 2The drying temperature used in the procedure,110 C, is applicable to fluxes containing propan-2-ol or other solvents of a similar boiling point. For fluxes with solvents of a higher boiling point, an alternative temperature may be agreed upon betw
30、een the supplier and the purchaser. Fluxes of classes1.1.3 and1.2.3 (see ISO9454-1), if activated with organic acids, and of classes1.1.2 and1.2.2 if they contain mixed organic and halide activators (see ISO9454-1), may lose a proportion of the activator content during the procedure described in cla
31、use5. 6 Expression of results The non-volatile matter in the flux sample, expressed as a percentage by mass, is given by the formula 7 Precision This method was subjected to a limited interlaboratory test programme, involving five laboratories. Repeatability and reproducibility were calculated in ac
32、cordance with ISO5725 2) ; the results are given inTable 1. 1) To be published. where m 2 is the mass, in grams, of the residue after drying; m 1 is the mass, in grams, of the sample taken. 2) ISO5725:1986, Precision of test methods Determination of repeatability and reproducibility for a standard t
33、est method by inter-laboratory tests. m 2 m 1 -100 % EN29455-1:1993 4 BSI 12-1999 8 Test report The test report shall include the following information: a) the identification of the test sample; b) the test method used (i.e.reference to this part of ISO9455); c) details of any variation of the dryin
34、g temperature/drying time used (see note2 to clause5); d) the results obtained; e) any unusual features noted during the determination; f) details of any operation not included in this part of ISO9455, or regarded as optional. Table 1 Precision data Parameter Non-volatile matter content of test flux
35、 5% (m/m) 15% (m/m) 25% (m/m) Within laboratory: standard deviation, S W repeatability, r Between laboratories: standard deviation, S b reproducibility, R 0,06 0,19 0,08 0,25 0,09 0,25 0,20 0,55 0,12 0,35 0,47 1,30EN29455-1:1993 BSI 12-1999 5 Annex ZA (normative) Normative references to internationa
36、l publications with their relevant European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references,
37、subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). Publication Year Title EN/HD Year ISO9454
38、-1 Soft soldering fluxes Classification and requirements Part1: Classification, labelling and packaging EN29454-1 6 blankBSEN29455-1:1994 BSI 12-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by
39、the Non-ferrous Metals Standards Policy Committee (NFM/-) to Technical Committee NFM/27 upon which the following bodies were represented: Association of British Pewter Craftsmen British Plumbing Fittings Manufacturers Association British Steel Industry Department of Trade and Industry EEA (Associati
40、on of Electronics, Telecommunications and Business Equipment Industries) International Tin Research Institute London Metal Exchange Metal Packaging Manufacturers Association Ministry of Defence Solder Makers Association National annex NB (informative) Cross-reference Publication referred to Correspo
41、nding British Standard ISO9454-1:1990 BSEN29454-1:1994 Soft soldering fluxes Classification and requirementsPart1: Classification, labelling and packagingBS EN 29455-1:1994 ISO 9455-1: 1990 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body r
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