BS 499-2-1980 Welding terms and symbols part2 Specification for symbols for welding - Discuz! Board.
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AD6D2AD9DE0D4EF784552B530DA0652D |
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文件大小(MB)： |
0.76 |
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页数： |
21 |
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日期： |
2024-6-23 |
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BS499:Part2:1980,UDC 621.791 :[001.4+003.62],for ar り::「,PYFU\ -,CONSULTIi^G,二”。oRS,ENGINEERS,Welding terms and symbols,Part 2. Specification for symbols for welding,Termes et symbols relatifs au soudage,Partie 2. Specification des symboles relatifs au soudage,Begriffe und Symbole der Schweisstechnik,Teil 2. Spezifikation fur Symbole der Schweisstechnik,for and on behalf o￡,PYPUN . BALFOURs,CONSULTING ENGINEERS,Maunsell Consul:^；i：s As;ユ し'.d,British Standards Institution Gr7,BS 499 : Part2 : 1980,Contents,Foreword,Cooperating organizations,Page,Inside front cover,Back cover,7.,8.,Specification,1.,4.,5.,6.,7.,Scope,References,Symbols,Position of symbols,Dimensions,Complementary indications,Marking,1,1,3,3,Tables,1.,Examples of use of symbols for compound,welds,Examples of combinations of elementary and,supplementary symbols,Main dimensions,Numerical indication of process,Figures,1. Method of representation,2. T-joint with one fillet weld ?济4总由cifdmiointMimiMgiiLlat welds,44.. PPopsdititoioi noOh^rrowlin^ ：,；§ 泰 W t fii m,Supplementary symbols' 4 >> ^ * A 5 6. Use of syrmKfoKAwntfivek,Examples of application;〇^^串^^丒 ム￥eザ丒^^启事4a輕^,symbols j .r B V wr rwi-dRtr.iv^estir,Position of the symbol \ 6 9. Exampl￠jJlbe indication of pro<,Elementary symbols,Position of the symbol :,Examples of the use of elementary s^mEots,Examples of combinations of elementary,symbols 12,liniensions,relds,:esting,icess,Page,14,15,16,18,1,2,2,2,3,3,3,3,3,Foreword,The revision of this Part of BS 499 has been carried out,under the direction of the Welding Standards Committee,to take account of the requirements of ISO 2553-1974,published by the International Organization for,Standardization (ISO). As a result the general content and,presentation have been changed to align with ISO 2553.,The elementary symbols depict the form of the weld to be,made regardless of the welding process to be employed,which was not always the case with the symbols in the,previous edition of this standard. These symbols may be,qualified by the use of supplementary symbols, dimensional,details and complementary indications.,In the absence of a single method being agreed internationally,ISO 2553 provisionally recognizes that the position of,the symbol relative to the reference line should depend on,the method of drawing projection used in the particular,case. It was felt that this situation should not be carried,over into this standard and therefore the practice of placing,the symbol below the reference line for welds on the 'arrow,*side remains unaltered in this revision, for both third and,first angle projection. Because of the existence of two,systems of positioning the symbol, however, it is strongly,recommended that all drawings should clearly state which,system has been employed.,In order to simplify drawings, it is recommended that,requirements relating to the preparation and making of,welds should be included on the welding procedure sheets.,For typical information to appear on welding procedure,sheets for various processes, reference should be made to,the appendices in BS 499 : Part 1, while an example of the,layout of a typical welding procedure test record is given in,the appendix of BS 4870 : Part 1.,BS 499 : Part 2 : 1980,British Standard,Welding terms and symbols,Part 2. Specification for symbols for welding,1. Scope,This Part of BS 499 specifies requirements for the symbolic,representation of welds on drawings. For the most common,types of weld the scheme provides basic indications regarding,the welds to be made without over-burdening the,drawing with notes or showing an additional view. The,scheme is not intended to apply to complex joints, involving,multiple welds for example, for which it may be simpler to,show on the drawing a separate detailed view of the joint,and welds required.,2. References,The titles of the standards publications referred to in this,standard are listed on the inside back cover.,3. Symbols,3.1 Elementary symbols. The various types of weld are,each characterized by a symbol which, in general, is representative,of the shape of the weld to be made or the edge,preparation to be used. The symbol is not to be taken to,pre-judge the welding process to be employed.,The type of weld shall be indicated by the appropriate,elementary symbol given in table 1. Examples are given in,table 5. The vertical portions of the symbols for single-bevel,butt, single-J butt and fillet welds shall always be on the,left-hand side of the symbol irrespective of the orientation,of the weld metal. The symbols shall apply to the respective,welds regardless, of the number of runs to be deposited,whether or not there is a r……
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