【国内外标准大全】BS 5996-1993 Specification forAcceptance levels for internal imperfections in steel late, strip and wide flats, based on ultrasonic testing.pdf
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1、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, Uncont
2、rolled 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 publis
3、hed 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 entruste
4、d 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 Eng
5、land and Wales Engineering Equipment and Materials Users Association Lloyds 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 o
6、f the standard, through subcommittees and panels: National Association of Steel Stockholders Amendments issued since publication Amd. No.DateComments Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sat Sep 22 04:54:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI w w w . b z f
7、 x w . c o m BS 5996:1993 BSI 12-1998i Contents Page Committees responsibleInside front cover Forewordii 1Scope1 2Normative references1 3Definitions1 4Acceptance levels1 Annex A (normative) Method for ultrasonic testing of steel plate, strip and wide flats5 Annex B (normative) Technique for establis
8、hing a distance amplitude correction (DAC) curve7 Annex C (normative) Determination of the size of internal imperfections by manual ultrasonic scanning8 Figure 1 Schematic representation of terms4 Table 1 Acceptance criteria for material body examination2 Table 2 Acceptance criteria for material edg
9、e examination3 Table A.1 Types of ultrasonic transducer for manual and assisted manual testing5 Table A.2 Band width for material edge testing6 List of referencesInside back cover Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sat Sep 22 04:54:16 GMT+00:00 2007, Uncontroll
10、ed Copy, (c) BSI w w w . b z f x w . c o m 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 ste
11、els, 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 a
12、nd 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
13、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
14、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 conf
15、er 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
16、 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 Copy, (c) BSI w w w . b z f x w . c o m BS 5996:1993 BSI 12-19981 1 Scope This British Standard specifies acceptance levels fo
17、r internal imperfections in ferritic and austenitic steel plate, strip and wide flat material based on ultrasonic testing. Six acceptance levels (B1 to B6) are specified for the body of the material, and three acceptance levels (E1 to E3) are specified for the material edges. Two further acceptance
18、levels, one for the body of the material (B7) and the other for the material edges (E4), are specified for austenitic steel plate. This British Standard covers the inspection of material with a thickness in the range of 5 mm to 200 mm, using manual, assisted manual, semi-automatic or automatic testi
19、ng methods. This British Standard may be used to specify the requirements for the ultrasonic testing of steel plate/strip used in the manufacture of welded tubes, for the detection of internal imperfections, to acceptance levels B1 to B4 and E1 to E3. NOTE 1Two further special acceptance levels, one
20、 for the body of the material and the other for the material edges (BX and EX respectively) may be specified by the purchaser when the material is intended for critical applications, and also for certain grades of austenitic steels. When these acceptance levels are specified, the test sensitivity an
21、d the reference standard to be adopted, together with acceptance criteria for imperfection size and population density, should be agreed between the purchaser and the manufacturer. NOTE 2The supply of material in accordance with this British Standard can be to any acceptance level for the material b
22、ody or for the material edges or for any acceptance level combination for both material body and edges, e.g. B3, E2, B3E3, B3E2. NOTE 3For thicknesses less than 5 mm and greater than 200 mm (or less in the case of austenitic plate dependent on chemical composition), difficulties can be experienced i
23、n achieving an adequate ultrasonic test for the detection of internal imperfections. In such instances agreement between purchaser and manufacturer is required to determine any deviation from the requirements of this British Standard. 2 Normative references This British Standard incorporates, by ref
24、erence, provisions from specific editions of other publications. These normative references are cited at the appropriate points in the text and the publications are listed on the inside back cover. Subsequent amendments to, or revisions of, any of these publications apply to this British Standard on
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