1、CEN EN*29q55-L 93 = 3404589 0057349 5bi W EUROPEAN STANDARD EN 29455-1 NORME EUROPENNE EUROPISCHE NORM November 1993 UDC 621.791.35.048 : 543.21 : 543.7 Descriptors: Soldering, soldering fluxes, tests, determination of content, non volatile matter, gravimetric analysis English version Soft soldering
2、 fluxes - Test methods - Part 1 : Determination of non-volatile matter, gravimetric method (IS0 9455-1 1990) Flux de brasage tendre - Mthodes dessai - Flussmittel zum Weichlten - Partie 1 : Dosage des matires non volatiles Prfverfahren - Teil 1 : Bestimmung par gravimtrie nichtflchtiger Stoffe, grav
3、imetrische (IS0 9455-1 1990) Methode (IS0 9455-1 1990) This European Standard was approved by CEN on 1993-11-15. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alt
4、eration. 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. The European Standard exists in three official versions (English, French, German). A version in any other language made by trans
5、lation under the responsibility of a GEN 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, Luxembour
6、g, 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 O 1993 Copyright reserved to CEN members Ref. No. EN 2945
7、5-1 : 1993 E CEN EN*Z9455-1 93 3404589 0057350 287 Page 2 EN 294551 : 1993 Foreword In 1993 the International Standard IS0 9455-1 : 1990 sofl solngfluxt?s - mt methods - Part 1 : Determination of non-volatile mate gravimetric method was submitted to the formal vote. The result was positive. This Eur
8、opean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 1994, and conflicting national standards shall be withdrawn at the latest by May 1994. In accordance with the CENKENELEC Internal Regulations, the follo
9、wing countries are bound to implement this European Standard : Austria, Belgium, Denmark, Finland, fiance, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. NOTE. Normative references to international publications are l
10、isted in annex ZA (normative). CEN EN+29455-L 93 m 34C142F9 0057353 315 Page 3 EN 294551 : 1993 Soft soldering fluxes - Test methods - Part 1: Determination of non-volatile matter, gravimetric method I Scope This part of IS0 9455 specifies a gravime,ic method for the determination of the content of
11、non-volatile matter in soft soldering fluxes. It is applicable to liquid and paste fluxes of type 1, as defined in IS0 9454-1. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this part of IS0 9455. At the time of public
12、ation, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this part of IC0 9455 are encouraged to investi- gate the possibility of applying the most recent edi- tion of the standard indicated below. Members of IEC and IS0 maintain registers of
13、currently valid International Standards. IS0 9454-1 :-), Soft soldering fluxes - Classification and requirements - Part I: Classification, labelling and packaging. 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. T
14、he cooled sample is re-weighed and the percentage of non-volatile matter is calcu- lated. 4 Apparatus Ordinary laboratory apparatus and 4.1 diameter. Petri dish, thin section glass nominally 100 mm 4.2 Weighing pipette, 20 ml to 25 ml capacity, for sampling liquid fluxes. 4.3 Boiling water bath. 4.4
15、 Drying oven, maintained at a temperature of 110 “C +_ 2 “C. 4.5 Desiccator, containing silica gel as the desiccant. 5 Procedure Carry 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 a
16、nd weigh to the nearest 0,001 g. Transfer to the dish sunicient of the sample, weighed to the nearest 0,001 g, to yield between 0,s g and 1,0 g of non- volatile matter, taking steps to prevent loss of vola- tile matter during the weighing. For liquid samples the use of the weighing pipette (4.2) is
17、recom- mended. Heat the dish and contents on a boiling water bath (4.3) to evaporate the bulk of the volatile matter. NOTE 1 this preliminary drying may be omitted. For samples already of a low volatile content, Remove the Petri dish (4.1) from the boiling water bath (4.3) and wipe the outside of th
18、e dish to remove condensed water. 1) To be published. CEN ENt29455-L 93 3404587 0057352 053 H Parameter Within laboratory: - standard deviation, S, - repeatability, r Between laboratories: - standard deviation, S, - reproducibility, R Page 4 EN 29455-1 : 1993 Non-volatile matter content of test flux
19、 5 % (m/m) 15 YO (rnlrn) 25 YO (mim) 0,06 0,09 0,12 0,19 0,25 0,35 0.08 0,20 0,47 0.25 0,55 1,30 Place the dish and contents in the oven and dry for 3 h at 110 “C f 2 “C. Cool in the desiccator to room temperature and weigh the dish and residue to the nearest 0,001 g. NOTE 2 The drying temperature u
20、sed in the procedure, 110 “C, is applicable to fluxes containing propan-2-01 or other solvents of a similar boiling point. For fluxes with solvents of a higher boiling point, an alternative temper- ature may be agreed upon between the supplier and the purchaser. Fluxes of classes 1.1.3 and 1.2.3 (se
21、e IS0 9454-l), if activated with organic acids, and of classes 1.1.2 and 1.2.2 if they contain mixed organic and halide activators (see IS0 9454-I), may lose a proportion of the activator content during the procedure described in clause 5. 6 Expression of results The non-volatile matter in the flux
22、sample, ex- pressed as a percentage by mass, is given by the formula m, - x 100 O! “i where m, is the mass, in grams, of the residue after drying; is the mass, in grams, of the sample taken. m, 7 Precision This method was subjected to a limited interlabora- tory test programme, involving five labora
23、tories. Repeatability and reproducibility were calculated in accordance with IS0 57252); the results are given in table I. 8 Test report The test report shall include the following informa- tion: a) the identification of the test sample; b) the test method used (.e. reference to this part of IS0 945
24、5); c) details of any variation of the drying temperature/drying time used (see note 2 to clause 5); d) the results obtained; e) any unusual features noted during the determi- nation; 9 details of any operation not included in this pari of IS0 9455, or regarded as optional. 2) IS0 5725:1986, Precisi
25、on of test methods - Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests. (EN ENW9455-1 93 m 340Lt589 O057353 T98 m Page 5 EN 294551 : 1993 Annex ZA (normative) Normative references to international publications with their relevant European publica
26、tions 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, subsequent amendments to or revisions of any of the
27、se 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 ENID Year IS0 9454-1 So5 soldering fluxes - Class$fication and EN 29454-1 - requiremenis - Part 1 : C-fication, labelling and packaging
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