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1、a Date: 21 October 2008 Origin: International Latest date for receipt of comments: 31 January 2009 Project no.: 2006/00023 Responsible committee: ISE/6 Steel castings Interested committees: Title: Draft ISO 4986 Founding - Magnetic particle inspection Supersession information: If this document is pu
2、blished 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 STAN
3、DARD. 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 f
4、orm, 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 Commi
7、ttee 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: 08/30144212 DC Licensed Copy: London South Bank University, South Bank University, 16/11/20
8、08 11:38, 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 re
9、levant 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 Stan
10、dard. 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 comm
12、ents 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 (justific
14、ation 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 altern
15、ative 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/
16、2008 11:38, Uncontrolled Copy, (c) BSI DRAFT INTERNATIONAL STANDARD ISO/DIS 4986 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 Magnetic
17、particle inspection Pices moules en acier ou en fonte Contrle par magntoscopie Revision of first edition (ISO 4986:1992) 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 composi
18、tion will 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 CIRC
19、ULATED 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 OC
20、CASION 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 D
21、OCUMENTATION. International Organization for Standardization, 2008 Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:38, Uncontrolled Copy, (c) BSI ISO/DIS 4986 ii ISO 2008 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance
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24、very 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. Copyright notice This ISO document is a Draft International Standard and is copyr
25、ight-protected 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 writte
26、n permission 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
27、 www.iso.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 11:38, Uncontrolled Copy, (c) BSI ISO DIS 4986 ISO 2008 All rights reserved iii Contents Page Foreword iv
28、 Introduction.v 1 Scope1 2 Normative refernces1 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.3 4.4 Conditions of inspection 3 5 Acceptance criteria .3 5.1 Definition of magnetic inspection indications3 5.1.1 Gener
29、al .3 5.1.2 Non-linear indications (SM)3 5.1.3 Linear indications (LM).3 5.2 Severity levels4 5.2.1 General .4 5.2.2 Non-linear indications.4 5.2.3 Linear and aligned indications.4 5.2.4 Selection of the severity level4 5.2.5 Designation of severity levels5 6 Classification of the indications and in
30、terpretation of results.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 and aligned indications.5 6.2 Interpretation of results6 7 Cleaning after examination and demagnetization .6 8 Inspection documents 6 Annex A.11 Annex B
31、(informative) Bibliography 12 Annex C (informative) Reference figures - Non-linear indications, SM.13 Annex D (Informative) Reference figures - Linear and aligned indications, LM and AM.18 Annex E (Informative) Model of a magnetic particle inspection document .33 Licensed Copy: London South Bank Uni
32、versity, South Bank University, 16/11/2008 11:38, Uncontrolled Copy, (c) BSI ISO DIS 4986 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
33、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 be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, al
34、so take part in the work. ISO collaborates closely 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 committ
35、ees is to prepare International Standards. Draft 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 poss
36、ibility 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 4986 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 11, Steel castings. This second edition cancels and
37、replaces the first edition (ISO 4986:1992), of which has been technically revised. Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:38, Uncontrolled Copy, (c) BSI ISO DIS 4986 ISO 2008 All rights reserved v Introduction This International Standard complements the gen
38、eral principles of magnetic particle inspection described in ISO 9934-1 for the additional requirements of the foundry industry. Magnetic particle 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 betwee
39、n the purchaser and the manufacturer at the time of acceptance of the order. Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:38, Uncontrolled Copy, (c) BSI Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:38, Uncontrolled Copy, (c) B
40、SI DRAFT INTERNATIONAL STANDARDISO DIS 4986 ISO 2008 All rights reserved 1 Steel and iron castings Magnetic particle inspection 1 Scope This International Standard applies to the magnetic particle inspection of ferro-magnetic steel castings. It also gives acceptance criteria through severity levels
41、defined by the nature, the area and the dimensions of the discontinuities present. This standard applies to all ferro-magnetic castings independent of the moulding method. A steel casting is considered to be ferro-magnetic if the magnetic induction is greater than 1 T (Tesla) for a magnetic field st
42、rength of 2,4 kA/m. This standard only applies to those areas of the castings specified for inspection and the percentage of castings to be inspected. 1 Normative refernces The following referenced documents are indispensable for the application of this document. For dated references, only the editi
43、on 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 Viewing conditions. ISO 4990, Steel castings - General technical delivery requirements. ISO 97
44、12, Non-destructive testing Qualification and certification of personnel. ISO 9934-1, Non-destructive testing Magnetic particle testing Part 1: General principles. ISO 11971, Visual examination of surface quality of steel castings. NOTE Informative references to documents used in the preparation of
45、this standard, and cited at the appropriate places in the text, are listed in a bibliography, see annex A. 2 Ordering information Subject to agreement between the manufacturer and the purchaser, enquiries and purchase orders for castings requiring magnetic particle inspection should include the foll
46、owing information: The areas of the castings and the percentage of the castings to be inspected shall be indicated in the enquiry. Licensed Copy: London South Bank University, South Bank University, 16/11/2008 11:38, Uncontrolled Copy, (c) BSI ISO DIS 4986 ISO 2008 All rights reserved 2 The manufact
47、uring stage(s), when magnetic particle inspection(s) is (are) to be performed, shall be defined by agreement between the manufacturer and the purchaser. The sensitivity can differ depending on the method of magnetic particle inspection selected. Hence the required severity levels and the method shal
48、l be agreed between the manufacturer and the purchaser. The order shall be subject to an agreement between the manufacturer and the purchaser and shall specify at least the following points: the qualification or certification of the operators who will carry out the inspection (see 4.2); the required
49、 surface finish of the areas to be inspected (see 4.3); NOTE It is recommended that the assessment of surface finish be carried out using a visual cast surface roughness comparator rather than an instrumental method (see ISO 11971). if inspection is to be performed in only one direction (see 4.1); the method to be used (type of detecti