BS 5996-1993 Specification forAcceptance levels for internal imperfections in steel late, strip and wide flats, based on ultrasonic testing
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1A7D6984A64644918958F74F12620F32 |
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文件大小(MB)： |
0.17 |
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页数： |
14 |
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日期： |
2010-10-4 |
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BRITISH STANDARD BS 5996:1993,Specification for,Acceptance levels for,internal imperfections,in steel plate, strip and,wide flats, based on,ultrasonic testing,UDC 669.14-41:620.179.16,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sat Sep 22 04:54:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 5996:1993,This British Standard, having,been prepared under the,direction of the Iron and Steel,Standards Policy Committee,was published under the,authority of the Standards,Board and comes into effect on,15 August 1993,. BSI 12-1998,First published as DD 21, 1972,First published as BS 5996,October 1980,Second edition August 1993,The following BSI references,relate to the work on this,standard:,Committee reference ISM 73,Draft for comment 91 47792 DC,ISBN 0 580 21676 4,Committees responsible for this,British Standard,The preparation of this British Standard was entrusted by the Iron and Steel,Standards Policy Committee (ISM/-) to Technical Committee ISM/73, upon,which the following bodies were represented:,Associated Offices Technical Committee,BEAMA Ltd.,British Forging Industry Association,British Gas plc,British Steel Industry,Electricity Supply Industry in England and Wales,Engineering Equipment and Materials Users’ Association,Lloyd’s Register of Shipping,Power Generation Contractors’ Association (BEAMA Ltd.),Process Plant Association,Seamless Steel Tube Association,Welding Institute,Coopted members,The following body was also represented in the drafting of the standard,through subcommittees and panels:,National Association of Steel Stockholders,Amendments issued since publication,Amd. No. Date Comments,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sat Sep 22 04:54:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 5996:1993,. BSI 12-1998 i,Contents,Page,Committees responsible Inside front cover,Foreword ii,1 Scope 1,2 Normative references 1,3 Definitions 1,4 Acceptance levels 1,Annex A (normative) Method for ultrasonic testing of,steel plate, strip and wide flats 5,Annex B (normative) Technique for establishing a distance,amplitude correction (DAC) curve 7,Annex C (normative) Determination of the size of internal,imperfections by manual ultrasonic scanning 8,Figure 1 — Schematic representation of terms 4,Table 1 — Acceptance criteria for material body examination 2,Table 2 — Acceptance criteria for material edge examination 3,Table A.1 — Types of ultrasonic transducer for manual,and assisted manual testing 5,Table A.2 — Band width for material edge testing 6,List of references Inside back cover,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sat Sep 22 04:54:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI,BS 5996:1993,ii . BSI 12-1998,Foreword,This British Standard has been prepared under the direction of the Iron and Steel,Standards Policy Committee. It supersedes BS 5996:1980 which is withdrawn.,Improvements in steelmaking technology resulting in cleaner steels, and the,improvements in ultrasonic test techniques since the publication of BS 5996:1980,have resulted in technical changes being introduced in this edition. These include,broadening the scope to permit the testing of material up to 200 mm thickness,the testing of austenitic stainless steels and the use of automatic ultrasonic,testing. To reflect the increase in cleanliness of steels additional stringent,acceptance levels have been introduced, particularly for edge testing.,This standard differs from BS 5996:1980 in that for any acceptance level only one,test procedure is specified, the terms “discontinuity”, “lamination” and “inclusion,cluster” have been replaced by “internal imperfections”, and the criteria for,rejection have been simplified.,Assessed capability. Users of this British Standard are advised to consider the,desirability of quality system assessment and registration against the,appropriate Part of BS 5750 by a third party certification body.,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 8, 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.,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sat Sep 22 04:54:16 GMT+00:00 2007, Uncontrolled Co……
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