1、STD*BSI BS EN IS0 L222Li-ENGL 1798 D Lb2qbb7 0724b9b BRITISH STANDARD Solder wire, solid and flux 955 D BS EN IS0 12224-k1998 cored - Specification and test methods - Part 1: Classification and performance requirements The European Standard EN Is0 122241:1998 has the status of a British standard ICs
2、 26.160.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGH LAW BS EN IS0 12224-1:1998 Amd. No. National foreword Date Text affected This British Standard is the English language version of EN IS0 122241:1998. It is identical with IS0 12224131997. Together with BS EN 122242 it super
3、sedes BS 441:1980, which will be withdrawn upon publication of BS EN 122242. Methods of anaiysis for tin alloys are contained in BS 3338. The UK participation in its preparation was entrusted by Technical Committee NFE/27, lin and tin alloys, to Subcommittee NFW27/4, Solders and soldering fluxes, wh
4、ich has the responsibility to: - aid enquirers to understand the te% - present to the responsible internationaU3uropean committee any enquiries on the interpretation, or proposais for change, and keep the UK interests informed; - monitor related international and European developments and promulgate
5、 them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC sandards nody include an annex which lists normative references to international publications with their corresp
6、onding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standars Cataogue under the section entitled “hteniational Standards Correspondence Index“, or by using the “Find“ facility of the BSI Stand
7、ards Electronic Catalogue. A British Standard does not purport to include ali the necessary provisions of a conira Classification and performance requirements - Part 2: Determination of flux content - Part 3: Wetting balance test Annexes A and B form an integral part of this International Standard.
8、Annexes C and D are for information only. hrcilptoir: soldering, solders, wire, soldering fluxes, classification, specifications, dimensions, diameters, performance, sampling. designation, marking. labelling, packaging. ii EN IS0 12224-1:1998 Solder wire, solid and flux cored - Specification and tes
9、t methods - Part 1: Classification and performance requirements 1 Scope This part of IS0 12224 specifies a coding system for the classification and designation of solid and flux cored solder wire, and the performance requirements to be met by flux cored wire and its constituents. Requirements for sa
10、mpling, labelling and packaging are also specified. Annex A specifies a method for the solvent extraction of flux incorporated in flux cored solder wire. The solution so obtained may be used for testing purposes. Annex B specifies the method for measuring the mean diameter of flux cored solder wire.
11、 - Annex C gives guidance on the test methods appropriate for the flux types incorporated in flux cored solder wire. - - 2 Normative references _. II * * zo The following standards contain provisions which, through reference in this text, constitute provisions of this pari of IS0 12224. At the time
12、of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IS0 12224 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain reg
13、isters of currently valid International Standards. IS0 9453:1990, Soft solder alloys - Chemical compositions and forms. IS0 9454-1 :1990, Soft soldering fluxes - Classification and requirements - Part 1: Classification, labelling and packaging. IS0 9455-10:-), Soft soldering fluxes - Test methods -
14、Part 70: Flux efficacy rest, solder spread method. IS0 9455-1 2:1992, Soft soldering fluxes - Test methods - Part 12: Steel tube corrosion test. IS0 9455-1 5:l 996, Soft Soldering fluxes - Test methods - Part 15: Copper corrosion test. IS0 9455-17:-), Soft soldering fluxes - Test methods - Part 17:
15、Sudace insulation resistance comb test and electrical migration test of flux residues. IS0 10564: 1993, Soldering and brazing materials - Methods for the sampling of soft solders for analysis. IS0 12224-2:-), Solder wire, solid and flux cored - Specification and test methods - Part 2: Determination
16、of flux content. 1) To be published. 1 EN IS0 12224-1:1998 3 Classification and designation 3.1 Solder alloy designation The solder alloy used for solid wire, and for the solder component of flux cored solder wire, shall be designated in accordance with the solder alloy designations given in IS0 945
17、3. 3.2 Flux classification The flux component of flux cored solder wire shall be classified in accordance with the system, based on the main fluxing ingredients, given in IS0 9454-1. 3.3 Designation of flux cored solder wire The designations for solid and flux cored solder wire shall consist of the
18、following parts: a) reference to this pari of IS0 12224 (.e. IS0 12224-1); b) the appropriate soft solder alloy designation in accordance with IS0 9453; c) in the case of flux cored solder wire, the appropriate flux classification in accordance with IS0 9454-1. The three parts of the designation sha
19、ll be separated by an oblique stroke (/). EXAMPLE 1 A solid wire, conforming to this part of IS0 12224, in 60/40 tinliead solder, is designated as follows: IS0 12224-1/S-Sn60Pb40 EXAMPLE 2 A flux cored solder wire, conforming to this part of IS0 12224, consisting of 60/40 tidlead solder having a cor
20、e of halide activated colophony flux, is designated as follows: IS0 12224-1/S-Sn60Pb40/1.1.2 4 Requirements 4.1 Solder alloy composition of solid and flux cored solder wire Solid solder wire shall conform to the requirements for the appropriate alloy given in IS0 9453. The solder component of flux c
21、ored solder wire shall conform to the requirements for the appropriate alloy given in IS0 9453. 4.2 Flux composition of flux cored solder wire After extraction from a sample of the flux cored solder wire, using the method given in annex A, the flux composition shall conform to the requirements for t
22、he appropriate flux type given in IS0 9454-1. 4.3 Flux content Table 1 gives the recommended (or preferred) nominal flux contents which are generally available for flux cored solder wire. When tested in accordance with the method given in IS0 12224-2, the flux content of the sample shall be within t
23、he permitted range for the appropriate nominal content given in table 1. 2 EN IS0 12224-1:1998 Table 1 - Recommended (preferred) nominal flux contents Percentage mass flux contents Recommended nominal content (see note) Permitted range min. max. UOTE- Other nominal flux contents may be specified, su
24、bject to agreemenl letween purchaser and supplier. In all cases, the permitted range shall be basec n a tolerance of c 0,15 Yo for nominal contents less than 0,5 Yo, and I 0,3 Yo foi iominal contents 0,5 % and above. The flux core) shall be continuous and uniform along the length of the flux cored s
25、older wire. _I 4.4 Dimensions and tolerances m - 7 I I Table 2 gives the recommended (or preferred) nominal sizes of solid and flux cored solder wire, which are generally available and the associated tolerance values. When tested in accordance with annex B, the mean diameter (.e. the average of the
26、maximum and minimum diameters a! any one cross-section of the wire) at each location shall conform to the tolerances given for the appropriate nominal diameter in tabk 2. - = E n n m Table 2 - Recommended (preferred) nominal diameters and tolerances Dimensions in mm Recommended nominal diameter (see
27、 note) 0,3 0.4 Tolerance on mean diameter i 0.03 I I ? 0,l NOTE- Other nominal diameters may be specified, and the associated tolerance, subject to agreement between the purchaser and the supplier. 3 - STD-BSI BS EN IS0 1222q-ENGL 1998 lb2Libb 0724705 798 W EN IS0 12224-1:1998 Flux core type (IS0 94
28、54-1 :1990) 4.5 Wetting efficiency of flux cored solder wire - spread test Minimum area of Minimum ratio of spread spread mm2 % 4.5.1 Applicability The spread test shall only be applicable to flux cored solder wires of 1,5 mm nominal diameter, having a nominal flux content not less than 2,O %, and a
29、 solder component consisting of one of the alloys: S-Sn63Pb37, S-Sn63Pb37E, S-Sn60Pb40, S-Sn6OPb40E or S-Sn62Pb36Ag2. 4.5.2 Minimum area of spread or ratio of spread For flux cored solder wires to which the area of spread test or ratio of spread test is applicable (see 4.5.1), when tested in accorda
30、nce with the method given in IS0 9455-10, the minimum area or ratio of spread shall conform to the appropriate requirement in table 3. Table 3 - Minimum areas of spread for specific flux cored solder wire 1.1.1 and 1.2.1 1.1.2 and 1.2.2 1.1.3 and 1.2.3 2.1.1 and 2.2.1 2.1.2 and 2.2.2 2.1.3 and 2.2.3
31、 3.1.1 and 3.1.2 3.3.1 1) Fiaures to be confirmed. 80 200 110 80 150 1 O0 180 120 65 85 80 65 85 80 85) 70) NOTE - A test for assessing the wetting efficiency of a flux, using a wetting balance, is being developed. 4.6 Corrosion by residues (applicable only to flux cored solder wires containing type
32、 1, type 2.2.2 and type 2.2.3 fluxes) 4.6.1 Steel tube corrosion test When the flux cored solder wire is tested in accordance with the method given in IS0 9455-12, there shall be no evidence of corrosion of the steel tube. 4.6.2 Copper corrosion test When the flux cored solder wire is tested in acco
33、rdance with IS0 9455-1 5, there shall be no evidence of corrosion: - after 21 days, for wire having core of flux type 1.1.1 or 1.2.1; - after 3 days, for wire having core of flux type 1.1.2, 1.1.3, 1.2.2, 1.2.3,2.2.2 or 2.2.3. 4.7 Influence of flux vapours on insulation resistance (applicable only t
34、o flux cored solder wires containing type 1, type 2.2.2 and type 2.2.3 fluxes) When the flux cored solder wire is tested in accordance with IS0 9455-17, the insulation resistance of the comb pattern shall not decrease by more than one decade. 4 STD.BS1 BS EN IS0 1222q-ENGL 1778 W Lb24bb 1772470b b24
35、 EN IS0 12224-11998 5 Sampling 5.1 Sampling for chemical analysis of the solder Select samples from the batch of flux cored solder wire and prepare analysis samples in accordance with the procedure given in IS0 10564. 5.2 Sampling for tests to determine the properties of the flux core (.e. Tests as
36、described in the various parts of IS0 9455) Select a sample at random from each batch of flux cored solder wire to be tested. The sample size shall be as indicated in annex A. Extract the flux from the sample, following the procedure given in annex A. Adjust the flux concentration of the resulting s
37、olution, by dilution or evaporation, to that required in the relevant part) of IS0 9455. 5.3 Sampling for tests to determine the flux content and the diameter of the flux cored solder wire Select samples from the batch of flux cored solder wire, as follows: a) wher the batch consists of up to 4 unit
38、s of product (.e. reel, coil or pack), select all units; b) where the batch consists of over 4, up to and including 44 units of product, select at random 4 units; c) where the batch consists of n units of product (n 44), select at random 0,ln units (to the nearest integer above 0,ln). II E E From ea
39、ch selected unit, cut back approximately 2 m from the free end of the wire and then cut a test specimen, approximately 2 m in length, for the determination of flux content and wire diameter. - - * rn * 6 Marking, labelling and packaging Flux cored solder wire shall be suitably packed to avoid damage
40、 or deterioration in handling and storage. Each package (Le. each reel, coil or other unit of product) of flux cored solder wire supplied in accordance with this part of IS0 12224 shall carry a label bearing the following information: a) the suppliers name, or identification; b) the designation of t
41、he flux cored solder wire, in accordance with the designation system described in 3.3; c) the flux content; d) the nominal wire diameter; e) the nett weight of reel or coil; f) the batch number and/or date of manufacture; g) any hazard or health and safety warnings required by local legislation. 5 A
42、nnex A (normative) Method for the solvent extraction of the flux from flux cored solder wire A.l General This method for the solvent extraction of the flux core of the solder wire produces a flux solution which may be used for carrying out tests on the flux core, as described in various parts of IS0
43、 9455. The method described yields only sufficient flux test solution for a single determination. A.2 Principle The flux is extracted from the cored wire with an appropriate solvent to give a solution of the flux for testing purposes. A.3 Reagents A.3.1 Acetone. A.3.2 Propan-2-01, NOTE - If the flux
44、 is not soluble in propan-2-01, then use another suitable solvent. For example, water should be used in the case of a water-soluble flux. A.4 Apparatus and materials Ordinary laboratory apparatus and A.4.1 Laboratory balance, with an accuracy of 0,l mg. A.4.2 Scalpel. A.4.3 Soxhlet extraction appara
45、tus, equipped with a Sint-red glass extraction thimble, porosity 40 brn t 100 pm (.e. porosity grade P100 specified in IS0 4793). A.4.4 Drying oven, suitable for use at (100 t 5) “C. A.5 Procedure Ascertain the approximate mass of solid flux required in the IS0 9455 method to be carried out. For ins
46、tance: - the determination of the acid value, in accordance with IS0 9455-3 would require 0,5 g of flux; - the determination of the halide content, in accordance with IS0 9455-6 would require a mass of flux in accordance with table A.l. 6 STD-BSI BS EN IS0 12224-ENGL 1778 E 262qbb9 0721.1708 4T7 E 0
47、,05 to 0,l 0,l to l,o EN IS0 12224-1:1998 1g 095 9 035 9 0.25 g Table A.l I Halide mass I Method A I Method D I concentration range ?LO I 1 ,o to 2,o I 025 g I 025 g -1 Using table A.2, take a sufficient sample of the cored wire to provide the required mass of flux. Table A.2 Nominal mass flux conte
48、nt of cored wire % Mass of wire containing approximately 1 g of flux 9 300 200 1 O0 75 50 35 30 Wipe the surface of the sample clean with a cloth moistened with acetone (A.3.1). Protecting the solder surface from contamination, cut the sample into 3 mm to 5 mm lengths, using the scalpel (A.4.2), so
49、as not to crimp the cut ends. Carry out this operation on a sheet of glossy paper, or on a white tile on a sheet of paper, so as not to lose any flux debris. Weigh the sintered glass extraction thimble (A.4.3), carefully transfer all of the cut pieces of wire and flux debris to the thimble, and re-weigh, both weighings being carried out to the nearest 0,l mg. Calculate the mass of the sample used, m, in grams. Carefully transfer the extraction thimble containing the cored wire pieces to the tube of a clean Soxhlet extraction apparatus (A.4.3). NOTE
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