ISO 25902-2-2010 Titanium pipes and tubes - Non-destructive testing - Part 2 Ultrasonic testing for the detection of longitudinal imperfections《钛管 无损检验 第2部分 纵向缺.pdf
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1、 Reference number ISO 25902-2:2010(E) ISO 2010INTERNATIONAL STANDARD ISO 25902-2 First edition 2010-03-01 Titanium pipes and tubes Non-destructive testing Part 2: Ultrasonic testing for the detection of longitudinal imperfections Canalisations et tubes en titane Essai non destructif Partie 2: Contrl
2、e par ultrason pour la dtection des dfauts longitudinaux ISO 25902-2:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and
3、 installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software
4、 products used to create this PDF file can be found in the General Info relative to the file; the 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 fo
5、und, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 All rights reserved. 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 mi
6、crofilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. 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
7、 2010 All rights reservedISO 25902-2:2010(E) ISO 2010 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO
8、 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates cl
9、osely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards 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. Dr
10、aft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International 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 doc
11、ument may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 25902-2 was prepared by Technical Committee ISO/TC 79, Light metals and their alloys, Subcommittee SC 11, Titanium. ISO 25902 consists of the following parts, under the gen
12、eral title Titanium pipes and tubes Non-destructive testing: Part 1: Eddy-current examination Part 2: Ultrasonic testing for the detection of longitudinal imperfections INTERNATIONAL STANDARD ISO 25902-2:2010(E) ISO 2010 All rights reserved 1Titanium pipes and tubes Non-destructive testing Part 2: U
13、ltrasonic testing for the detection of longitudinal imperfections 1 Scope This part of ISO 25902 specifies an ultrasonic testing method for detecting longitudinal imperfections in titanium seamless tubes or welded tubes. This part of ISO 25902 also applies to titanium alloy tubes. In this part of IS
14、O 25902 a) the minimum wall thickness is 0,3 mm, b) only rectangular notches are permitted as reference reflectors, and c) the minimum notch depth is 0,08 mm. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only
15、the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 9712, Non-destructive testing Qualification and certification of personnel ISO 10375, Non-destructive testing Ultrasonic inspection Characterization of search unit
16、 and sound field ISO 18175, Non-destructive testing Evaluating performance characteristics of ultrasonic pulse-echo testing systems without the use of electronic measurement instruments 3 General 3.1 Applicable dimension range The range of the applicable dimensions of a tube shall be 10 mm to 150 mm
17、 outside diameter and 0,3 mm to 10 mm thickness. The ratio of thickness to outside diameter shall be less than or equal to 0,2 (20 %). 3.2 Testing technique The test shall be carried out using an ultrasonic angle beam technique, effected by rotating the ultrasonic transducer or the tube. The ultraso
18、nic testing system shall be an immersion technique (including a local immersion technique). ISO 25902-2:2010(E) 2 ISO 2010 All rights reserved3.3 Personnel This test shall be carried out by suitably trained operators qualified in accordance with ISO 9712 or equivalent and supervised by competent per
19、sonnel nominated by the manufacturer. In the case of third-party inspection, this shall be agreed between the purchaser and manufacturer. Non-destructive testing (NDT) operators shall be authorized by a level 3 NDT individual approved by the employer. 4 Apparatus 4.1 Ultrasonic system, composed of a
20、n ultrasonic instrument, at least one ultrasonic transducer, a tube-feeding device, a rotary device for transducers or tubes, and an automatic alarm and recording system. The performance of the transducer shall comply with ISO 10375. The whole test system, i.e. instrument, transducer, tube-feeding d
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- ISO2590222010TITANIUMPIPESANDTUBESNONDESTRUCTIVETESTINGPART2ULTRASONICTESTINGFORTHEDETECTIONOFLONGITUDINALIMPERFECTIONS

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