BS 1429-1980
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F1469FEAB8F44127BB458E6DDEC7095C |
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文件大小(MB)： |
0.61 |
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页数： |
10 |
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日期： |
2006-3-10 |
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购买： |
文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
BS 1429:1980,UDC 62-272 : 669.14-426 :,66914Q1&27 — 153,"八七争十月#5落,用册年3月1招,Specification for,Annealed round steel wire for,general engineering springs 跆,Specification pour Ie fil dzacier recuit rond pour ressorts d'usage mecanique general,Spezifikation fur gegtuhten runden Stahldraht fiir allgemeine Maschinenfedern,British Standards Institution ■■III 050920011270,BS 1429 : 1980,Contents,Page Page,Foreword Inside front cover,Cooperating organizations Back cover,Specification,Section one. General,1.,Scope 1,2.,References 1,3.,Products and quality coding 1,4.,Information to be supplied by the purchaser 1,Section two. Manufacture, testing and packing,5.,Manufacture 1,6.,Selection of test pieces 1,7.,Mechanical testing 2,8.,Dimensional tolerances 2,9.,Examination for defects 3,10.,Retests 3,11.,Packing and identification 3,Section three. Specific requirements,12.,General 3,Foreword,This British Standard has been prepared under the direction of the Iron and Steel Standards Committee and specifies the requirements for annealed steel wire for springs that are to be heat treated after manufacture. The standard has been extensively revised and is now metricated and retitled. BS 1429 : 1948 is now withdrawn.,A range of carbon steels and two types of alloy steel have been retained. Provision has been made however,13.,Chemical composition 4,14.,Hardening test 4,15.,Decarburization, surface defects 4,Appendix,A. Product analysis and permitted variations 4,Tables,1.,Production range and quality codes 1,2.,Maximum tensile strength for annealed wire according to steel grade 2,3.,Tolerances on diameter and ovality 2,4.,Tolerances on length of straight lengths 2,5.,Chemical composition (cast analysis) 3,6.,Minimum hardness requirements 4,7.,Partial decarbur ization levels 4,8.,Surface defect levels 4,9.,Permitted variations of product analysis from specified range 5,Figure,L Position of wire for bend test 2,for various qualities to be supplied that are related to the intended application of the wire. These are identified by an appropriate quality code.,The concept of standard or preferred sizes is not appropriate for this standard. The size ranges listed for each grade may not be available from every manufacturer without restriction.,BS 1429 : 1980,British Standard Specification for,Annealed round steel wire for general engineering springs,Section one. General,1.,Scope,This British Standard specifies the requirements for annealed, or annealed and lightly drawn round steel wire, supplied in coils or straight lengths, suitable for the manufacture of mechanical springs by cold-forming which are hardened and tempered after forming.,It is generally applicable to wire sizes in the range from 1.00 mm to 16 mm.,2.,References,The titles of the standards publications referred to in this standard are listed on the inside back cover.,3.,Products and quality coding,Wire is available in three qualities related to application and shall be designated by the quality code given in table 1.,Table 1. Production range and quality codes,Wire application,Quality code,Range of diameters (inclusive),Normal duty static,NS,mm,1.0 to 16.0,High duty static and normal duty dynamic,ND,1.0 to 16.0,High duty dynamic,HD,1.0 to 16.0,4.,Information to be supplied by the purchaser The following information shall be given on the enquiry or order,(a),The number of this British Standard, i.e. BS 1429.,(b),The steel grade (see clause 12 and table 5).,(c),The wire quality code (see clause 3).,(d),The diameter of the wire.,(e),Any applicable requirements from the appropriate clauses for:,(1),surface finish and condition of wire (see 5.4);,(2),hardness testing (see 7.2);,(3),non-destructive testing (see 9.3);,(4),packing and identification (see clause 11).,(f),Any other special requirements.,Example: 2.80 mm diameter 0.70 % to 0.75 % carbon steel normal duty static spring wire in the annealed condition.,Order as: BS 1429,070A72, NS, 2.80 mm, annealed.,Section two. Manufacture, testing and packing NOTE. The requirements of the clauses in section two are applicable to al! steel grades and qualities of wire.,5.,Manufacture,5.1,Steelmaking process. The steel may be made by any process except that air and mixed air-oxygen bottom blown converter processes shall not be used. In the case of the oxygen process, the nitrogen content of the steel shall not exceed 0.008 %.,5.2,Chemical composition. The chemical compositions of the steels specified in section three are based on cast analysis. On request, the wire manufacturer shall supply the cast analysis for the specified elements. Any subsequent analytical checks shall take into consideration the……
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