1、CEP4 EN*ISO 9455-2 95 = 3404589 0139117 226 W BRITISH STANDARD Soft soldering fluxes - Test methods Part 2. Determination of non-volatile matter, ebulliometric method The European Standard EN IS0 9455-2 : 1995 has the status of a British Standard ICs 25.160.20, 25.180 50 UDC GZ1 791.35.048 : 543.714
2、 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW EN IS0 455-2 : 1996 CEN ENJISO 9455-2 95 m 3404589 OLLSLLB Lb2 m BS EN IS0 9455-2 : 1996 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the S
3、tandards Board and comes into effect on 15 February 1996 O BSI 1996 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee NlW27, Tin and tin alloys, upon which the following bodies were represented Association of British Pewter
4、 Craftsman British iron and Steel Producers Association Federation of the Electronics Industry International Tin Research Institute London Metal Exchange Metal Packaging Manufacturers Association Solder Makers Association Co-opted members The foliowing bodies were also represented in the drafting of
5、 the standard, through subcommittees and panels. British Plumbing FWngs Manfacturers Association Institute of Metal Finishing Ministry of Defence Co-opted members Amendments issued since publication Amd. No. 1 Date I Text affected The following BSI references relate to the work on this standard i Co
6、mmittee reference NW27 Draft for comment 92/38567 DC ISBN O 680 26229 9 CEN EN*ISO 9455-2 95 3404589 OLLLL OT BS EN IS0 9455-2 : 1996 Contents Page Committees responsible Inside front cover National foreword 11 Foreword 2 Method 1 Scope 3 2 Normative references 3 Principle 4 Apparatus 5 Procedure 6
7、Calculation of results 4 7 Precision 4 8 Test report 4 Annexes A (informative) Method for the preparation of standard reference rosin 7 ZA (normative) Normative references to international publications with their relevant European publications 8 Figures 2 mical distillation curve 6 (colophony) based
8、 liquid fluxes, having 25% (dm) non-volatile content 1 Martin ebulliometer with spherical distillation mask 5 O ES1 1996 i CEN EN*ISO 9455-2 95 m 3404589 OlLqL20 810 m BS EN IS0 9455-2 : 1996 National foreword This British Standard has been prepared by Technical Committee NFEE7 and is the English la
9、nguage version of EN IS0 94552 : 1995 Soft soWngfluxes - Test methods -Part 2: Detmnimtion of non-volatile mat P2 p3 is the mass, in grams, of the flask and the flux sample; is the mass, in grams, of the flask and the non-volatile residue. The valaies calculated for the duplicate determinations on t
10、he flux sample should not differ by more than 0,2 % (dm). Calculate the mean of the two results, to obtain the result for the non-volatile matter content of the flux sample. NOTE 5 The experimental technique may be verified by carrying out the procedure given in clause 5 on a standard flux, containi
11、ng 25 % (m/m) non-volatile content, prepared as described in annex A. 7 Precision Interlaboratory tests were carried out on three fluxes containing non-volatile matter within the range 18 Yo (dm) to 26 % (dm). Six laboratories took part in the tests and the estimates for precision data, ex- pressed
12、as % (dm) non-volatile matter, were as fol- lows: Standard deviations -within laboratory sw 0,32 - between laboratories sb 1,29 Repeatability r 0.9 Reproducibility R 36 8 Test report The test report shall include the following information: a) identification of the test sample; b) the test method use
13、d (.e. reference to this part of IS0 9455); c) the results obtained; d) any unusual features noted during the determi- nation; e) details of any operation not included in this part of IS0 9455, or regarded as optional. Thermometer (or thermocouple) Rubber plug / Vacuum si eve Hollow glass ball Conic
14、al ground-glass joint Distillation flask 200 ml Open-endedtube / Figure 1 - Martin ebulliometer with spherical distillation flask - - CEN EN*ISO 9455-2 95 = 3404589 OL19L26 239 Page 6 EN IS0 9455-2 : 1995 I I I I I l 15 20 25 30 O 5 10 Time (min) Figure 2 - Typical distillation curve CEN ENUISO 9455
15、-2 95 m 3404589 O339327 175 m Page 7 EN IS0 9455-2 : 1995 Annex A (informative) Method for the preparation of standard reference rosin (colophony) based liquid fluxes, having 25 % (dm) non-volatile content A.l General A.4.2 Diethylamine hydrochloride, dried for 2 h at 110 OC $I 2 “C. This annex give
16、s a method for the preparation of two standard rosin (colophony) based liquid fluxes having 25 % (dm) non-volatile content, one nonactivated and the other halogen-activated (.e. being respec- A.4.3 ProPan-2-0lr having the following compo- tively class l.l.l.A and class 1.1.2.A, as defined in IS0 945
17、4-1). The specifications for the flux constitu- ents are based on IEC 68-2-20:1979, 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 IS0 9455. sition
18、: Pro pa n-2-01: Acid content: Non-volatile content: 99,5 % (dm) minimum 0,002 % (dm) maximum 0,2 % (dm) maximum A.2 Principle A.5 Procedure The non-activated flux is prepared by dissolving a special grade of rosin (colophony) in propan-2-01. The halogen-activated flux is prepared in a similar way,
19、with the addition of diethylamine hydrochloride. A.3 Apparatus Usual laboratory apparatus and, in particular, the fol- lowing. A.5.2 Halogen-activated rosin (colophony) A.3.1 Oven, capable of being maintained at Weigh 0,39 g IO.01 g of diethylamine hydrochloride 110 “C f 2 OC. (A.4.2) and dissolve i
20、t in 75 g f 0,l g of propan-2-01 (A.4.3). Then add 25 g i 0.1 g of rosin (A.4.1) and dissolve it with gentle mixing. This flux solution con- A.4 Reagents tains 0,5 % (d.) of active chloride. Use only reagents of recognized analytical grade. A-5.1 Non-activated rosin (colophony) Weigh 25 g f 0,l g of
21、 rosin (A.4.1) and dissolve it with gentle mixing in 75 g I0,l g of propan-2-01 (A.4.3). A.4.1 Gum rosin (colophony), water-white grade or equivalent, having the following properties: A.6 Storage Acid value: Softening point: 70 OC minimum Flow point: 76 OC minimum Ash: 0,05 % maximum Solubility: 155
22、 mg KOH /g to 180 mg The standard flux solutions, prepared as described in A.5 must be stored in a container, properly closed at all times, away from heat or extreme cold. KOH 19 To give clear 1 + 1 solution in propan-2-01 CEN EN*ISO 9Y.55-2 95 3404589 OLL9L2 OOL Page 8 EN IS0 9455-2 : 1995 Annex ZA
23、 (normative) Normative references to 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 publicat
24、ions 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 references the latest edition of the publication referred to applies (including amend
25、ments). Publication Year Title ENMD Year IS0 9454-1 1990 Soft song .xes - Classgication and EN 29454-1 1993 requirements - Part 1: Classification, MeUing and packaging O ES1 1996 CEN EN*ISO 9455-2 95 3404587 OLL7L27 T48 BS EN IS0 9455-2 : 1996 List of references See national foreword. BS EN IS0 9455
26、-2 : 1996 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Contract requir
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