BS 7475-1991 Specification for fusion welding of austenitic stainless steels
|
ID： |
3CDF525371DE43B8AA60D78490350672 |
|
文件大小(MB)： |
0.23 |
|
页数： |
16 |
|
文件格式： |
|
|
日期： |
2010-10-4 |
|
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）：
BRITISH STANDARD BS 7475:1991,Incorporating,Amendment No. 1,Specification for,Fusion welding of,austenitic stainless,steels,BS 7475:1991,This British Standard, having,been prepared under the,direction of the Welding,Standards Policy Committee,was published under the,authority of the Standards,Board and comes into effect on,29 November 1991,. BSI 02-1999,The following BSI references,relate to the work on this,standard:,Committee reference WEE/45,Draft for comment 90/75780 DC,ISBN 0 580 19972 X,Committees responsible for this,British Standard,The preparation of this British Standard was entrusted by the Welding,Standards Policy Committee (WEE/-) to Technical Committee WEE/45, upon,which the following bodies were represented:,Associated Offices Technical Committee,British Nuclear Fuels Ltd.,British Railways Board,British Steel Industry,Stainless Steel Fabricators’ Association of Great Britain,United Kingdom Atomic Energy Authority,Welding Institute,Welding Manufacturers’ Association (BEAMA Ltd.),Amendments issued since publication,Amd. No. Date Comments,7642 April 1993 Indicated by a sideline in the margin,BS 7475:1991,. BSI 02-1999 i,Contents,Page,Committees responsible Inside front cover,Foreword ii,1 Scope 1,2 Definitions 1,3 Information and requirements to be agreed and,to be documented 1,4 Storage, handling and workshop requirements 1,5 Parent metal 2,6 Welding process 2,7 Welding consumables 2,8 Equipment 2,9 Butt weld details 3,10 Fillet weld details 4,11 Preparation of fusion faces 5,12 Assembly for welding 6,13 Alignment of butt joints 6,14 Fit-up of parts joined by fillet welds 6,15 Tack welds 6,16 Temporary attachments 7,17 Stray arcing 7,18 Inter-run cleaning 7,19 Details of welding procedure 7,20 Approval and testing of welding procedures 7,21 Approval and testing of welders 7,22 Identification of welds 7,23 Inspection and testing 7,24 Quality of welds 7,25 Correction of faulty welds 8,26 Heat treatment 8,27 Weld finishing 8,Appendix A Metallurgical aspects 9,Appendix B Recommended consumables for gas,shielded arc welding and manual metal arc welding of,austenitic stainless steels 10,Figure 1 — Fillet welds applied to the edge of a part 5,Table 1 — Guidance for shielding gas selection 3,Table 2 — Recommended diameters and welding,currents for TIG electrodes 3,Table 3 — Recommended weld preparation,tolerances for butt joints 5,Table 4 — Alignment of butt joints for plates and sheets 6,Table 5 — Alignment of butt joints for pipes and tubes 6,Table 6 — Recommended consumables for gas,shielded arc welding and manual metal arc welding of,austenitic stainless steels 10,Publication(s) referred to Inside back cover,BS 7475:1991,ii . BSI 02-1999,Foreword,This British Standard has been prepared under the direction of the Welding,Standards Policy Committee.,It supersedes BS 3019-2:1960 which is withdrawn.,This standard expands and updates the recommendations given in,BS 3019-2:1960 and presents them in the form of a specification. The standard is,primarily intended for arc welding but it may be applied to other forms of welding,e.g. laser welding.,The austenitic stainless steels covered by this specification generally contain in,excess of 16 % chromium, together with more than 8 % nickel or nickel plus,manganese. Steels within this category may also contain additional alloying,elements, such as molybdenum, titanium, niobium, carbon or nitrogen to provide,particular properties. The combination of alloying additions in all of these steels,is sufficient to give an almost entirely face centred cubic, “austenitic”, crystal,structure. However, a small amount of the magnetic ferrite phase may be present,in some steels and further small amounts of ferrite may form during autogenous,welding.,It is assumed in the drafting of this British Standard that the execution of its,provisions is entrusted to appropriately qualified and experienced personnel.,A British Standard does not purport to include all the necessary provisions of a,contract. Users 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,pages 1 to 10, an inside back cover and a back 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.,BS 7475:1991,. BSI 02-1999 1,1 Scope,This British Standard specifies requirements for the,manual, semi-automatic, automatic and,mechanized arc welding of austenitic stainless s……
……