1、BRITISH STANDARD BS EN ISO 9455-2:1996 Soft soldering fluxes Test methods Part2: Determination of non-volatile matter, ebulliometric method The European Standard EN ISO9455-2:1995 has the status of a BritishStandard ICS 25.160.20; 25.160.50 UDC 621.791.35.048:543.714BSENISO9455-2:1996 This BritishSt
2、andard, having been prepared under the directionof the Engineering SectorBoard, was published underthe authority of the Standards Board and comes intoeffect on 15February1996 BSI01-2000 The following BSI references relate to the work on this standard: Committee reference NFE/27 Draft for comment92/3
3、8567 DC ISBN 0 580 25229 9 Committees responsible for this British Standard The preparation of this BritishStandard was entrusted to Technical Committee NFE/27, Tin and tin alloys, upon which the following bodies wererepresented: Association of British Pewter Craftsman British Iron and Steel Produce
4、rs Association Federation of the Electronics Industry International Tin Research Institute London Metal Exchange Metal Packaging Manufacturers Association Solder Makers Association Co-opted members The following bodies were also represented in the drafting of the standard, through subcommittees and
5、panels. British Plumbing Fittings Manufacturers Association Institute of Metal Finishing Ministry of Defence Co-opted members Amendments issued since publication Amd. No. Date CommentsBSENISO9455-2:1996 BSI 01-2000 i Contents Page Committees responsible Inside front cover National foreword ii Forewo
6、rd 2 1 Scope 3 2 Normative references 3 3 Principle 3 4 Apparatus 3 5 Procedure 3 6 Calculation of results 3 7 Precision 4 8 Test report 4 Annex A (informative) Method for the preparation ofstandardreferencerosin(colophony) based liquid fluxes, having25% (m/m) non-volatile content 7 Annex ZA (normat
7、ive) Normative references to international publicationswiththeir relevant European publications 8 Figure 1 Martin ebulliometer with spherical distillation mask 5 Figure 2 Typical distillation curve 6 List of references Inside back coverBSENISO9455-2:1996 ii BSI 01-2000 National foreword This British
8、Standard has been prepared by Technical Committee NFE/27 and is the English language version of EN ISO9455-2:1995 Soft soldering fluxes Test methods Part2: Determination of non-volatile matter, ebulliometric method, published by the European Committee for Standardization (CEN). EN ISO9455-2 is ident
9、ical with ISO9455-2:1993, 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 for their correct application. Compliance with a British Standard doe
10、s not of itself confer immunity from legal obligations. Cross-references Publication referred to Corresponding British Standard ISO4791-1:1985 BS6711 Vocabulary relating to laboratory apparatus made essentially from glass, porcelain or vitreous silica Part1:1986 Names for items of apparatus EN29454-
11、1:1993 (ISO9454-1:1990) BS EN29454 Soft soldering fluxes Classification and requirements Part1:1994 Classification, labelling and packaging IEC68-2-20:1979 BS2011 Environmental testing Part2.1 Tests Part2.1T:1981 Test T. Soldering Summary of pages This document comprises a front cover, an inside fro
12、nt cover, pagesi andii, theEN ISO title page, pages2 to8, 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.EUROPEAN STANDARD NORME EUROPENNE EUR
13、OPISCHE NORM EN ISO9455-2 September1995 ICS 25.160.20; 25.160.50 Descriptors: Soldering, soldering fluxes, tests, determination of content, non volatile matter, evaporation analysis English version Soft soldering fluxes Test methods Part2:Determination of non-volatile matter, ebulliometricmethod (IS
14、O9455-2:1993) Flux de brasage tendre Mthodes dessai Partie2: Dosage des matires non volatiles parbulliomtrie (ISO9455-2:1993) Flumittel zum Weichlten Prfverfahren Teil2: Bestimmung nichtflchtiger Stoffe, ebulliometrische Methode (ISO9455-2:1993) This European Standard was approved by CEN on1995-08-2
15、7. 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 alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained o
16、n 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 translation under the responsibility of a CEN member into its own language and notified to the Central Secretaria
17、t 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, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for
18、Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members. Ref. No. EN ISO9455-2:1995 EENISO945
19、5-2:1995 BSI 01-2000 2 Foreword The text of the International Standard from ISO/TC44, Welding and allied processes, of the International Organization for Standardization (ISO) has been taken over as a European Standard by the Technical Committee CEN/TC121, Welding. This European Standard shall be gi
20、ven the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March1996, and conflicting national standards shall be withdrawn at the latest by March1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to i
21、mplement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. NOTENormative references to International Standards are listed in Annex ZA (normative).ENISO94
22、55-2:1995 BSI 01-2000 3 1 Scope This part of ISO9455 specifies an ebulliometric method for the determination of the content of non-volatile matter in soft soldering fluxes. It is applicable to liquid fluxes of classes1.1.1,1.1.2 and1.1.3, as defined in ISO9454-1, and only those fluxes containing sol
23、vents of relatively high volatility, such as propan-2-ol. The method is applicable only to fluxes with a non-volatile contentof10% or more. NOTE 1For the determination of the content of non-volatile matter of liquid fluxes of these classes, where the solvent has a lower volatility than propan-2-ol,
24、the method given in ISO9455-1 should be used. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO9455. At the time of publication, the editions indicated were valid. All standards are subject to revision,
25、and parties to agreements based on this part of ISO9455 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO4791-1:1985, Laboratory apparatus Voca
26、bulary relating to apparatus made essentially from glass, porcelain or vitreous silica Part1:Names for items of apparatus. ISO9454-1:1990, Soft soldering fluxes Classification and requirements Part1:Classification, labelling and packaging. IEC68-2-20:1979, Environmental testing Part2:Tests Test T: S
27、oldering. 3 Principle A weighed amount of the flux sample is evaporated in an ebulliometer until the entire volatile part is driven off, which is determined by following the graph of distillation temperature against time. The flux residue is considered as the non-volatile content of flux. 4 Apparatu
28、s Usual laboratory apparatus and, in particular, the following. 4.1 Martin ebulliometer (ISO4791-1:1985,5.04.10), but with a spherical distillation flask, as shown in Figure 1. NOTE 2It has been found that better heat exchange characteristics are obtained between the heater and the distillation flas
29、k if a spherical flask is used rather than the pear-shaped flask normally supplied with the Martin ebulliometer. 4.2 Thermostatically controlled heater, suitable for heating the distillation flask of the ebulliometer. 4.3 Laboratory thermometer, covering the range50 C to150 C with0,5 C graduations,
30、for use with the ebulliometer. NOTE 3A corrosion-resistant thermocouple, connected to a digital indicator, or recorder, may be used in place of the laboratory thermometer. 4.4 Laboratory balance, accurate to0,1mg. 5 Procedure Carry out the following procedure in duplicate. All the glass apparatus us
31、ed shall be clean and dry. Remove the distillation flask from the Martin ebulliometer(4.1) and weigh it to the nearest0,001g. Introduce between40g and50g of the flux sample into the flask and re-weigh the flask to the nearest0,001g. This weighing shall be carried out quickly, so as to avoid loss of
32、solvent by evaporation. Attach the flask to the ebulliometer and fit the thermometer, or thermocouple,(4.3) as shown in Figure 1, through a new rubber plug in the top of the distillation column. Adjust the thermometer or thermocouple height so that its tip is on a level with the entry of the cross t
33、ube leading to the condenser. Turn on the water in the condenser. Turn the heater on. When the flux begins to boil, regulate the heat so as to collect the condensate at the rate of1 drop per second for the first millilitre and2 drops per second thereafter. Record the temperature and time at approxim
34、ately2min intervals and plot the distillation curve (temperature versus time) during the course of the distillation. A typical distillation curve is given in Figure 2. NOTE 4This curve may be obtained directly if a thermocouple (see4.3) is used and connected to a suitable recorder. Stop the distilla
35、tion when the temperature drops back to75 C. Remove the distillation flask immediately and put it into a desiccator while it cools down to room temperature. Weigh the distillation flask containing the non-volatile residue. 6 Calculation of results The non-volatile matter content for each determinati
36、on, in% (m/m), is equal to where P 1 is the mass, in grams, of the empty distillation flask; P 3 P 1 () P 2 P 1 () -100 ENISO9455-2:1995 4 BSI 01-2000 The values calculated for the duplicate determinations on the flux sample should not differ by more than0,2% (m/m). Calculate the mean of the two res
37、ults, to obtain the result for the non-volatile matter content of the flux sample. NOTE 5The experimental technique may be verified by carrying out the procedure given in clause5 on a standard flux, containing25% (m/m) non-volatile content, prepared as described in Annex A. 7 Precision Interlaborato
38、ry tests were carried out on three fluxes containing non-volatile matter within the range18% (m/m) to26% (m/m). Six laboratories took part in the tests and the estimates for precision data, expressed as% (m/m) non-volatile matter, were as follows: 8 Test report The test report shall include the foll
39、owing information: a) identification of the test sample; b) the test method used (i.e.reference to this partof ISO9455); c) the results obtained; d) any unusual features noted during the determination; e) details of any operation not included in this part of ISO9455, or regarded as optional. P 2 is
40、the mass, in grams, of the flask and the flux sample; P 3 is the mass, in grams, of the flask and the non-volatile residue. Standard deviations within laboratory s w 0,32 between laboratories s b 1,29 Repeatability r 0,9 Reproducibility R 3,6ENISO9455-2:1995 BSI 01-2000 5 Figure 1 Martin ebulliomete
41、r with spherical distillation flaskENISO9455-2:1995 6 BSI 01-2000 Figure 2 Typical distillation curveENISO9455-2:1995 BSI 01-2000 7 Annex A (informative) Method for the preparation of standard reference rosin (colophony) based liquid fluxes, having25% (m/m) non-volatile content A.1 General This anne
42、x gives a method for the preparation of two standard rosin (colophony) based liquid fluxes having25% (m/m) non-volatile content, one non-activated and the other halogen-activated (i.e.being respectively class1.1.1.A and class1.1.2.A, as defined in ISO9454-1). The specifications for the flux constitu
43、ents are based on IEC68-2-20:1979, Appendix C. The standard flux may be used by a laboratory to verify its experimental procedure, in the method for the determination of non-volatile content, described in the main body of this part of ISO9455. A.2 Principle The non-activated flux is prepared by diss
44、olving a special grade of rosin (colophony) in propan-2-ol. The halogen-activated flux is prepared in a similar way, with the addition of diethylamine hydrochloride. A.3 Apparatus Usual laboratory apparatus and, in particular, the following. A.3.1 Oven, capable of being maintained at110 C 2 C. A.4 R
45、eagents Use only reagents of recognized analytical grade. A.4.1 Gum rosin (colophony), water-white grade or equivalent, having the following properties: A.4.2 Diethylamine hydrochloride, dried for2h at110 C 2 C. A.4.3 Propan-2-ol, having the following composition: A.5 Procedure A.5.1 Non-activated r
46、osin (colophony) Weigh25g 0,1g of rosin(A.4.1) and dissolve it with gentle mixing in75g 0,1g of propan-2-ol(A.4.3). A.5.2 Halogen-activated rosin (colophony) Weigh0,39g 0,01g of diethylamine hydrochloride(A.4.2) and dissolve it in75g 0,1g of propan-2-ol(A.4.3). Then add25g 0,1g of rosin(A.4.1) and d
47、issolve it with gentle mixing. This flux solution contains0,5% (m/m) of active chloride. A.6 Storage The standard flux solutions, prepared as described inA.5 must be stored in a container, properly closed at all times, away from heat or extreme cold. Acid value: 155mg KOH/g to180mg KOH/g Softening p
48、oint: 70 C minimum Flow point: 76 C minimum Ash: 0,05% maximum Solubility: To give clear1+1 solution in propan-2-ol Propan-2-ol: 99,5% (m/m) minimum Acid content: 0,002% (m/m) maximum Non-volatile content: 0,2% (m/m) maximumENISO9455-2:1995 8 BSI 01-2000 Annex ZA (normative) Normative references to
49、international 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, 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 refe
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