BS 4871-2-1982 Approval testing of welders working to approved welding procedures Part 2. TIG or MIG welding of alumonium and its alloys
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553C5E0731ED42D9BF263F09442B6D1C |
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文件大小(MB)： |
1.04 |
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页数： |
16 |
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日期： |
2024-6-23 |
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宜;amr.giNm:ハ用丒：ホa* 生七5:,BSI *BHSS?1 PART丒己 8己丒 LGm”bgワ 。01amm“8 0 Bl ',BS 4871: Part 2:1982,u dc 621.791.0075:331,HB^adaea.Tiisai^ai.Twasi,009639,. British Standards Institution. No part,of this publlcatton may be photocopied,or otherwise reproduced without the,prior permission in writing of BSI.,Specification for,Approval testing of welders,working to approved welding procedures,Part 2. TIG or MIG welding of aluminium,and its alloys,Specification pour essal d^Qrdment des soudeurs qualifies,pour les pro西d的 de soudage agr^s,Partie 2. Soudage h Parc eri atmosph&re inerte avec Electrode fusible,ou de tungsUne de『aluminium et des alllages d^luminlum.,.- . ->i , - - -, ??.,Spezlfikation fur SchwelBerpyufung mit Verfa hre n spruf u ng,Teil 2. WIG- und MIG-SchweiBen von Aluminium und seinen Legferungen,BS 4871 ： Part 2 : 1982,BSI *BMSfl71 *2PART BS ■ IkSMbbT ロOb己ヨ“ラ己,Contents I,Page,Foreword Inside front cover,Cooperating organizations ? Back cover,Specification i,it,1. Scope % 1,2. References j 1,3. Definitions { 1,4. Information to be given to the welder 1,5. Items to be recorded く ,6. Extent of approval 1,7. Test pieces 2,8. Submission of test weld 2,9, Examination and testing 6,10. Statement of results 9,11. Reapprova! of welder 9,Appendices,A. Designation cross references,B. Record of approval test of welder,10 .,10,Tablet,1. Grouping of parent metals 1,2. Grouping of filler metals 2,3. Positional approval for pipe 2,4, Acceptance levels 7,6丒 Number of test specimens required 9,6. Bend test former diameter 9,Figures,T丒 Test piece and location of test specimens,for butt weld In sheet or plate 3,2. Test piece for butt weld in pipe and location,of test specimens for pipe welded In the,fixed horizontal or fixed 45 0 inclined,position 4,3. Test piece for fillet weld in sheet or plate 5,4. Test piece and location of test specimens,for branch connection in pipe 6,Foreword V,This British Standard, which has been prepared under the,direction of the Welding Standards Committee, Is one of a,series of standards on the approval testing of welders and,welding procedures, the latter having a bearing on the,former for certain applications. This link has been used as a,means.of arranging the series of standards Into:,(a) approval testing of welding procedures (see,BS487O:Part2);,{b} welder approval when approval of the welding,procedure Is required;,(c) welder approval when approval of the welding,procedure Is not required (for either technical or,contract reasons) (see BS 4872 ： Part 2].,For the purposes of this Part of this standard, a welder,working to an approved procedure or a procedure being,approved Is considered to be sufficiently experienced in,the appropriate welding process for aluminium and its,alloys and hence already capable of passing tests such as,thosa given In BS 4872 ： Part 2.,To indicate the philosophy behind this series of standards,it is considered useful to give details of the practices',relating to welding procedure approval. Depending upon,the emphasis placed on quality control iイ the production,of welded components, the approval of welding procedures,covered in this series of standards may be administered in,one of several ways which should be stipulated at the,enquiry and/or order stage. Tha alternatives currently,employed are the following:,(1) each individual contractor (or sub-contractor) may,have proved by actual test pieces every weld form he,wishes to user In every thickness and material; or,(2) each individual contractor (or sub-contractor) may,have proved by actual tost pieces; a set of welds,representative on a group bash of all the various thicknesses,and materials to be used In production; or,(3) each Individual contractor (or sub-contractor) need,not make procedure test pieces provided he can prove,by appropriate authentic documentation of an,Independent nature that he has previously satisfactorily,welded the type of joint and material In question.,In respect of (1) and (2) it should be appreciated that once,the welding procedure tests have been approved, they need,never be repeated unless there Is a change In certain,variables. As an extension beyond (3)f It may be possible,by agreement between the contracting parties for fully,documented welding procedures, developed Independently,of the particular contractor, to be employed without the,need for further approval tests.,BS 4871 : Part 2 :1982,BSI *4B8S71 PART丒己 8己丒 ILaHtLH DQkSBSO ワ丒 ?,British Standard Specification for,Approval testing of welders,working to approved welding procedures,Part 2. TIG or MIG welding of；aluminium and its alloys,1. Scope . ?v,This Part of this British Standard specifies requi……
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