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1、a Date: 21 October 2008 Origin: International Latest date for receipt of comments: 31 January 2009 Project no.: 2006/00024 Responsible committee: ISE/6 Steel castings Interested committees: Title: Draft ISO 4987 Founding - Liquid penetrant inspection Supersession information: If this document is pub
2、lished as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STAND
3、ARD. THIS DRAFT IS NOT CURRENT BEYOND 31 January 2009. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commenting. No copying is allowed, in any fo
4、rm, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for briefing purposes. Electronic circulation is limited to dissemination by e-mail within such an organization by committee members.
5、 Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email . British, International and foreign standards are also available from BSI Customer Services. Information on the co-operating organizations represented on the committees referenced above may
6、be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or European publications referred to in this draft may be found via the British Standards Online Service on the BSI web site http:/. Direct tel: 020 8996 7009 Responsible Commit
7、tee Secretary: Committee Service Centre (BSI) E-mail: Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 8.0 DPC: 08/30144215 DC Licensed Copy: London South Bank University, South Bank University, 16/11/200
8、8 11:39, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on international discussions in which the UK has taken an active part. Your comments on this draft are invited and will assist in the preparation of the consequent standard. Comments submitted will be reviewed by the rel
9、evant BSI committee before sending the consensus UK vote and comments to the international secretariat, which will then decide appropriate action on the draft and the comments received. If the international standard is approved, it is possible the text will be published as an identical British Stand
10、ard. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote on this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts
11、are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possible; otherwise comme
12、nts in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank electronic version of a
13、comment form are available from the BSI web site at: http:/ Template for comments and secretariat observations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment (justifica
14、tion for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alterna
15、tive cannot be supported as serious problems have been encountered in its use in the UK. Delete reference to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, South Bank University, 16/11/2
16、008 11:39, Uncontrolled Copy, (c) BSI DRAFT INTERNATIONAL STANDARD ISO/DIS 4987 ISO/TC 17/SC 11 Secretariat: ANSI Voting begins on Voting terminates on 2008-10-13 2009-03-13 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION Steel and iron castings Liquid pen
17、etrant inspection Pices moules en acier ou en fonte Contrle par ressuage Revision of first edition (ISO 4987:1992) ICS 77.040.20; 77.140.80 To expedite distribution, this document is circulated as received from the committee secretariat. ISO Central Secretariat work of editing and text composition w
18、ill be undertaken at publication stage. Pour acclrer la distribution, le prsent document est distribu tel quil est parvenu du secrtariat du comit. Le travail de rdaction et de composition de texte sera effectu au Secrtariat central de lISO au stade de publication. THIS DOCUMENT IS A DRAFT CIRCULATED
19、 FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH. IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION
20、 HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS. RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMEN
21、TATION. International Organization for Standardization, 2008 Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:39, Uncontrolled Copy, (c) BSI ISO/DIS 4987 ii ISO 2008 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with A
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24、are 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. Copyright notice This ISO document is a Draft International Standard and is copyright-p
25、rotected by ISO. Except as permitted under the applicable laws of the users country, neither this ISO draft nor any extract from it may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, photocopying, recording or otherwise, without prior written perm
26、ission being secured. Requests for permission to reproduce should be addressed to 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.i
27、so.org Reproduction may be subject to royalty payments or a licensing agreement. Violators may be prosecuted. Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:39, Uncontrolled Copy, (c) BSI ISO DIS 4987 ISO 2008 All rights reserved iii Contents Page Foreword iv Intro
28、duction.v 1 Scope1 2 Normative references1 3 Ordering information.1 4 Method of inspection 2 4.1 Operating mode.2 4.2 Qualification of the operators 2 4.3 Surface preparation.2 4.4 Conditions of inspection 2 5 Acceptance criteria .3 5.1 Definition of liquid penetrant indications .3 5.1.1 General .3
29、5.1.2 Non-linear indications (SP) 3 5.1.3 Linear indication (LP)3 5.2 Severity levels3 5.2.1 General .3 5.2.2 Non-linear indications.3 5.2.3 Linear indications4 5.2.4 Selection of the severity level4 5.2.5 Designation of severity levels4 6 Classification of the indications and interpretation of resu
30、lts.5 6.1 Classification of the indications using Tables 1 and 25 6.1.1 General .5 6.1.2 Non-linear indications.5 6.1.3 Linear indications5 6.2 Interpretation of results5 7 Retesting 5 8 Post-examination cleaning procedures5 9 Inspection documentation6 Annex A.10 Annex B (Informative) Bibloiography
31、11 Annex C (Informative) Reference figures - Non-linear isolated indications, SP 12 Annex D (informative) Reference figures - Linear indications, LP17 Annex E - Model of a liquid penetrant inspection document.32 Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:39, Un
32、controlled Copy, (c) BSI ISO DIS 4987 iv ISO 2008 All rights reserved Foreword 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 techni
33、cal 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 closely w
34、ith 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. Draft Int
35、ernational 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 document m
36、ay be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 4987 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 11, Steel castings. This second edition cancels and replaces the first edition (ISO 4987:1992), of which
37、 has been technically revised. Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:39, Uncontrolled Copy, (c) BSI ISO DIS 4987 ISO 2008 All rights reserved v Introduction This International Standard complements the general principles of liquid penetrant inspection descr
38、ibed in ISO 3452 for the additional requirements of the foundry industry. Liquid penetrant inspection as well as any other non-destructive examination is part of a general or specific assessment of the quality of the casting to be agreed between the purchaser and the manufacturer at the time of acce
39、ptance of the order. Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:39, Uncontrolled Copy, (c) BSI Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:39, Uncontrolled Copy, (c) BSI DRAFT INTERNATIONAL STANDARD ISO DIS 4987 ISO 2008 Al
40、l rights reserved 1 Steel and iron castings Liquid penetrant inspection 1 Scope This International Standard applies to the liquid penetrant inspection of steel castings whatever their grade and the casting procedure used to produce them. 2 Normative references The following referenced documents are
41、indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3059, Non-destructive testing Penetrant testing and magnetic particle testing Viewin
42、g conditions. ISO 3452, Non-destructive testing Penetrant inspection General principles. ISO 4990, Steel castings - General technical delivery requirements ISO 9712, Non-destructive testing Qualification and certification of personnel. ISO 11971, Visual examination of surface quality of steel castin
43、gs. NOTE Informative references to documents used in the preparation of this standard, and cited at the appropriate places in the text, are listed in a bibliography, see annex A. 3 Ordering information Subject to agreement between the manufacturer and the purchaser, enquiries and purchase orders for
44、 castings requiring liquid penetrant inspection should include the following information: the qualification or certification of the operators who will carry out the inspection the area of the casting to be inspected the required surface finish of the areas to be inspected inspection shall be carried
45、 out in accordance with ISO 3452 the type of discontinuity; the severity level. the frequency/number of castings to be inspected Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:39, Uncontrolled Copy, (c) BSI ISO DIS 4987 2 ISO 2008 All rights reserved the qualificat
46、ion level of the inspector carrying out the inspection Sensitivity can differ depending on the method of liquid penetrant inspection selected. Therefore the severity levels required shall be selected as a function of the liquid penetrants used and the method agreed between the manufacturer and the p
47、urchaser. The type of discontinuity and the severity level can vary depending on the area of the casting inspected (see Tables 1 and 2). 4 Method of inspection 4.1 Operating mode Inspection shall be carried out as described in ISO 3452. The characteristics of the penetrant materials shall be checked
48、 in accordance with specifications to be agreed between the manufacturer and the purchaser. 4.2 Qualification of the operators Inspection shall be performed by personnel, qualified in accordance with ISO 9712 or by a certification scheme which is considered to be equivalent. 4.3 Surface preparation
49、The surface to be inspected shall be clean and free from oil, grease, moulding and coating residues or any other contaminant which could interfere with the correct implementation and interpretation of the penetrant inspection test results. For small indications it may be necessary to improve the surface. Some guidance for the s