ISO-17640-2005.pdf
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1、 Reference number ISO 17640:2005(E) ISO 2005 INTERNATIONAL STANDARD ISO 17640 First edition 2005-07-15 Non-destructive testing of welds Ultrasonic testing of welded joints Contrle non destructif des assemblages souds Contrle par ultrasons des assemblages souds ISO 17640:2005(E) PDF disclaimer This P
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4、PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2005 All rights reserve
5、d. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester
6、. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2005 All rights reserved -,-,- ISO 17640:2005(E) ISO 2005 All rights reserved iii Contents Page Foreword iv Introduction v 1 S
7、cope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Symbols and abbreviated terms . 2 5 Information requirements 2 5.1 Information required prior to testing 2 5.2 Additional pre-test information. 3 5.3 Written test procedure 3 6 Requirements for personnel and equipment. 3 6.1 Personnel q
8、ualifications 3 6.2 Equipment . 4 6.3 Probe parameters . 4 7 Test volume. 4 8 Preparation of scanning surfaces. 5 9 Parent material testing. 6 10 Range and sensitivity setting 6 10.1 General. 6 10.2 Reference level 6 10.3 Evaluation levels. 7 10.4 Transfer correction. 7 10.5 Signal-to-noise ratio. 8
9、 11 Testing levels 8 12 Testing technique. 8 12.1 General. 8 12.2 Manual scan path 8 12.3 Testing for imperfections perpendicular to the test surface 9 12.4 Location of indications. 9 12.5 Evaluation of indications . 9 13 Test report . 10 13.1 General. 10 13.2 General data 10 13.3 Information relati
10、ng to equipment 11 13.4 Information relating to testing technique. 11 13.5 Results of testing 11 Annex A (normative) Testing levels for various types of welded joint. 12 Bibliography. 26 -,-,- ISO 17640:2005(E) iv ISO 2005 All rights reserved Foreword ISO (the International Organization for Standard
11、ization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to
12、be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Stand
13、ards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inte
14、rnational Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 17640
15、was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 5, Testing and inspection of welds. ISO 17640:2005(E) ISO 2005 All rights reserved v Introduction This International Standard describes general methods for ultrasonic testing, using standard criteria, of the
16、 most commonly used welded joints. It specifies requirements for equipment, surface preparation, inspection performance and reporting. The parameters specified, in particular those for the probes, are compatible with the requirements of EN 1712 and EN 1713, and are suitable for use with other accept
17、ance criteria standards. The inspection techniques are suitable for the detection of weld imperfections specified in typical weld acceptance standards. The methods used for ultrasonic assessment of indications and acceptance criteria shall be specified, for example by reference to application standa
18、rds. Requests for official interpretations of any aspect of this International Standard should be directed to the Secretariat of ISO/TC 44/SC 5 via your national standards body. A complete listing of these bodies can be found at www.iso.org. NOTE If the acceptance criteria require a more precise det
19、ermination of the height and nature of the defect, e.g. when fitness-for-purpose criteria are applied, this may necessitate the use of techniques outside the scope of this International Standard. -,-,- -,-,- INTERNATIONAL STANDARD ISO 17640:2005(E) ISO 2005 All rights reserved 1 Non-destructive test
20、ing of welds Ultrasonic testing of welded joints 1 Scope This International Standard specifies methods for manual ultrasonic testing of fusion-welded joints in metallic materials, greater than or equal to 8 mm thick, which exhibit low ultrasonic attenuation (especially that due to scatter). This Int
21、ernational Standard is primarily intended for full penetration welded joints where both the welded and parent materials are ferritic. This International Standard specifies four testing levels (A, B, C and D) (see Clause 11), each corresponding to a different probability of detection of imperfections
22、. Rules for the selection of testing levels A, B and C are given in Annex A. This International Standard may be used for assessment of indications, for acceptance purposes, by either of the following methods: a) evaluation based primarily on length and echo amplitude of the signal indication; b) eva
23、luation based on characterization and sizing of the indication by probe movement methods. The techniques described in this International Standard may be specified, for example in an application standard, for use with: materials other than those stated, partial-penetration welds, automated equipment.
24、 In each case, the technique should be verified as having adequate sensitivity. NOTE Where material-dependent ultrasonic values are specified in this International Standard, they are based on steels having an ultrasonic sound velocity of (5 920 50) m/s for longitudinal waves, and (3 255 30) m/s for
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