1、BRITISH STANDARD BS 3338-14: 1965 Method for The sampling of white metal bearing alloy ingots Methods for the sampling and analysis of tin and tin alloysBS3338-14:1965 This British Standard, having been approved by the Non-ferrous Metals Industry Standards Committee and endorsed by the Chairman of t
2、heEngineering Divisional Council, was published undertheauthority of the GeneralCouncil on 18March1965 BSI 12-1999 The following BSI references relate to the work on this standard: Committee references NFE/27, NFE/27/1 Draft for comment D63/1211 ISBN 0 580 03147 0 Co-operating organizations The Non-
3、ferrous Metals Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: The Government departments and scientific and industrial organizations marked wi
4、th an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: Aluminium Federation Institution of Mining and Metallurgy Association of Bronze and Brass Founders Institution of Production Engineers As
5、sociation of Consulting Engineers Institution of Structural Engineers British Bronze and Brass Ingot Manufacturers Lead Development Association Association Light Metal Founders Association British Electrical and Allied Manufacturers London Metal Exchange* Association* Magnesium Industry Council Brit
6、ish Lead Manufacturers Association Ministry of Aviation British Non-ferrous Metals Federation Ministry of Defence, Army Department* British Non-ferrous Metals Research Ministry of Defence, Naval Department* Association* Ministry of Transport Copper Development Association National Brassfoundry Assoc
7、iation Crown Agents for Oversea Governments and Non-ferrous Metal Stockists Administrations Post Office* Electric Cable Makers Federation Royal Institute of British Architects High Commission of India Society of British Aerospace Companies Ltd. High Conductivity Copper Association Society of Motor M
8、anufacturers and Traders Institute of British Foundrymen Ltd.* Institute of Metals Tin Research Institute* Institution of Mechanical Engineers Zinc Development Association (Automobile Division) Individual manufacturer British Railways Board London Transport Board British Tin Box Manufacturers Federa
9、tion Solder Makers Association Cable Makers Association Tinplate Conference(1925) Electronic Engineering Association Tin Producers Association Gas Council White Metal Bearing Manufacturers Institution of Gas Engineers Individual firms Amendments issued since publication Amd. No. Date CommentsBS3338-
10、14:1965 BSI 12-1999 i Contents Page Foreword ii Procedure 1BS3338-14:1965 ii BSI 12-1999 Foreword This standard makes reference to the following British Standards: BS 219, Soft solders. BS 3252, Ingot tin. BS 3332, White metal bearing alloy ingots. This method for the sampling of white metal bearing
11、 alloy ingots is the fourteenth of a series of methods which will form a complete British Standard under the collective title “Methods for the sampling and analysis of tin and tin alloys”, eachmethod being published as a separate part. The preparation of this series of methods has been authorized by
12、 the Non-ferrous Metals Industry Standards Committee as part of a general programme for the standardization of methods for the sampling and analysis of non-ferrous metals. Other methods in the series are as follows: Part 1: Sampling of ingot tin; Part 2: Determination of tin in ingot tin; Part 3: De
13、termination of antimony in ingot tin; Part 4: Determination of copper in ingot tin and tin-lead solders; Part 5: Determination of lead in ingot tin and tin-antimony solders; Part 6: Determination of copper in high purity ingot tin; Part 7: Determination of silver in solders; Part 8: Determination of
14、 bismuth in ingot tin, tin-lead solders and white metal bearing alloys; Part 9: Determination of arsenic in ingot tin, solders and white metal bearing alloys; Part 10: Determination of iron in ingot tin, tin-lead solders and white metal bearing alloys; Part 11: Determination of tin in solders; Part
15、12: Sampling of solders; Part 13: Determination of antimony in solders and white metal bearing alloys; Part 15: Determination of copper and lead in white metal bearing alloys; Part 16: Determination of tin in white metal bearing alloys; Part 17: Determination of cadmium in solders and white metal be
16、aring alloys. The complete British Standard methods will be found suitable for the grades of metals covered by BS3252, “Ingot tin”, BS219, “Soft solders”, and BS3332, “White metal bearing alloy ingots”. A British Standard does not purport to include all the necessary provisions of a contract. Users
17、of British Standards are responsible for 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, pages i and ii, pages1 and 2, an inside back cover and a ba
18、ck 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.BS3338-14:1965 BSI 12-1999 1 Procedure a) Selection of ingots. A selection of ingots in a single consignment of one brand sh
19、all be taken atrandom for examination. b) Preparation of surfaces. All surfaces which may be included in the sample obtained by sawing shall be cleaned by scratch-brushing, and finally by soft brushing to remove the loose surface contaminants. c) Sampling of the selected ingots. In the case of recta
20、ngular shaped ingots they shall be placed side by side and a line drawn diagonally from the top of the first ingot to the bottom of the last. A saw cut shall be made with a hand saw with fine teeth(18 to the inch), in the side of each ingot at a point opposite that at which the diagonal cuts the cen
21、tre line of each ingot. Sawing shall be continued halfway through each ingot. No lubricants shall be used. In the case of ingots in the form of a number of linked circular sections, sampling shall be carried out by sawing along a diameter as far as the centre of one of the sections from each ingot.
22、The circular section chosen should be such that each position within the type of ingot is represented approximately an equal number of times in the final sample. All sawings shall be collected and mixed thoroughly, any iron contamination being removed by means of a powerful magnet. If any oil is pre
23、sent the sawings shall be cleaned in petroleum ether and dried. If the sawings are of uniform small size, no further treatment is necessary other than thorough mixing and sampling by coning and quartering. If powder accompanies the sawings, the sample should be sieved through a sieve which experienc
24、e shows will separate the fines differing markedly in composition from the remainder of the sample, and weights of the coarse and fine materials in proportion to their weights in the sample should be taken for analysis. Number of ingots in consignment Number of ingots to be selected 1 2 3 1 2 3 46 7
25、9 1013 4 5 6 1418 1927 2843 7 8 9 4489 90 or over 10 112 blankBS3338-14:1965 BSI 12-1999 British Standards The following are available on application: YEARBOOK Including subject index and numerical list of British Standards 15s. SECTIONAL LISTS. Gratis Acoustics Aircraft materials and components Bui
26、lding materials and components Chemical engineering Chemicals, fats, oils, scientific apparatus, etc. Cinematography and photography Coal, coke and colliery requisites Codes of Practice Consumer goods Documentation, including Universal Decimal Classification Drawing practice Electrical engineering F
27、arming, dairying and allied interests Furniture, bedding and furnishings Gas and solid fuel and refractories Glassware including scientific apparatus Hospital equipment Illumination and lighting fittings Industrial instruments, etc. Iron and steel Machine tools Mechanical engineering Nomenclature, s
28、ymbols and abbreviations Non-ferrous metals Packaging and containers Paints, varnishes, paint materials and colours for paints Personal safety equipment Petroleum industry Plastics Printing, paper and stationery Road engineering Rubber Shipbuilding Textiles and clothing WeldingBS 3338-14: 1965 BSI 3
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