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1、 IEC 60404-8-7 Edition 3.0 2008-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Magnetic materials Part 8-7: Specifications for individual materials Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fully-processed state Matriaux magntiques Partie 8-7: Spcifications pour ma
2、triaux particuliers Bandes et tles magntiques en acier grains orients, lamines froid et livres ltat fini IEC 60404-8-7:2008 -,-,- THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reprod
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17、TIONALE Magnetic materials Part 8-7: Specifications for individual materials Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fully-processed state Matriaux magntiques Partie 8-7: Spcifications pour matriaux particuliers Bandes et tles magntiques en acier grains orients,
18、lamines froid et livres ltat fini INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE R ICS 29.030 PRICE CODE CODE PRIX ISBN 2-8318-9793-9 2 60404-8-7 IEC:2008 CONTENTS FOREWORD.4 1 Scope.6 2 Normative references .6 3 Terms and definitions .7 4 Classification7 5 Desi
19、gnation 7 6 General requirements.8 6.1 Production process8 6.2 Form of supply 8 6.3 Delivery condition9 6.4 Surface condition 9 6.5 Suitability for cutting9 7 Technical requirements 9 7.1 Magnetic properties.9 7.1.1 General .9 7.1.2 Magnetic polarization.9 7.1.3 Specific total loss 11 7.2 Geometric
20、characteristics and tolerances 11 7.2.1 Thickness11 7.2.2 Width.12 7.2.3 Length.12 7.2.4 Edge camber .13 7.2.5 Flatness (wave factor) .13 7.2.6 Residual curvature 13 7.2.7 Burr height 13 7.3 Technological characteristics 13 7.3.1 Density13 7.3.2 Stacking factor 13 7.3.3 Number of bends .13 7.3.4 Int
21、ernal stresses13 7.3.5 Insulation coating resistance .13 8 Inspection and testing 14 8.1 General.14 8.2 Selection of samples .14 8.3 Preparation of test specimens .14 8.3.1 Magnetic properties.14 8.3.2 Geometrical characteristics and tolerances15 8.3.3 Technological characteristics.15 8.4 Test metho
22、ds 16 8.4.1 General .16 8.4.2 Magnetic properties.16 8.4.3 Geometrical characteristics and tolerances16 8.4.4 Technological characteristics.17 8.5 Retests17 9 Marking, labelling and packaging17 10 Complaints .17 60404-8-7 IEC:2008 3 11 Information to be supplied by the purchaser .18 Annex A (informa
23、tive) European steel designation .19 Table 1 Technological and magnetic properties of the conventional grades of grain- oriented material.10 Table 2 Technological and magnetic properties of the high permeability grades of grain-oriented material11 Table 3 Tolerances on nominal width.12 Table A.1 Eur
24、opean steel designation19 -,-,- 4 60404-8-7 IEC:2008 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MAGNETIC MATERIALS Part 8-7: Specifications for individual materials Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fully-processed state FOREWORD 1) The International Elect
25、rotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields.
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27、ional Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization
28、(ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representatio
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32、ication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, pro
33、perty damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in
34、 this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying an
35、y or all such patent rights. International Standard IEC 60404-8-7 has been prepared by IEC technical committee 68: Magnetic alloys and steels. This third edition cancels and replaces the second edition published in 1998 of which it constitutes a technical revision. This revision extends the range of
36、 electrical steels to include the improved grades. The text of this standard is based on the following documents: FDIS Report on voting 68/367/FDIS 68/370/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. 60404-8-7
37、 IEC:2008 5 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all the parts in the IEC 60404 series, under the general title Magnetic materials, can be found on the IEC website. The committee has decided that the contents of this publication will remain u
38、nchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. -,-,- 6 60404-8-7 IEC:2008 MAGNETIC MATERIA
39、LS Part 8-7: Specifications for individual materials Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fully-processed state 1 Scope This part of IEC 60404 defines the grades of cold-rolled grain-oriented electrical steel strip and sheet in nominal thicknesses of 0,23 mm,
40、0,27 mm, 0,30 mm and 0,35 mm. In particular, it gives general requirements, magnetic properties, geometric characteristics, tolerances and technological characteristics, as well as inspection procedures. This standard applies to Goss textured grain-oriented electrical steel strip and sheet supplied
41、in the final annealed condition in sheets or coils, and intended for the construction of magnetic circuits. The grades are grouped into two classes: conventional grades; high permeability grades. They correspond to Class C.22 of IEC 60404-1. 2 Normative references The following referenced documents
42、are 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. IEC 60050-121, International Electrotechnical Vocabulary Part 121: Electromagnetism
43、IEC 60050-221, International Electrotechnical Vocabulary Part 221: Magnetic materials and components IEC 60404-1, Magnetic materials Part 1: Classification IEC 60404-1-1, Magnetic materials Part 1-1: Classification - Surface insulations of electrical steel sheet, strip and laminations IEC 60404-2, M
44、agnetic materials Part 2: Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame IEC 60404-3, Magnetic materials Part 3: Methods of measurement of the magnetic properties of magnetic sheet and strip by means of a single sheet tester IEC 604
45、04-9, Magnetic materials Part 9: Methods of determination of the geometrical characteristics of magnetic steel sheet and strip IEC 60404-11, Magnetic materials Part 11: Method of test for the determination of surface insulation resistance of magnetic sheet and strip -,-,- 60404-8-7 IEC:2008 7 IEC 60
46、404-13, Magnetic materials Part 13: Methods of measurement of density, resistivity and stacking factor of electrical steel sheet and strip ISO 404, Steel and steel products General technical delivery requirements ISO 7799, Metallic materials Sheet and strip 3 mm thick or less Reverse bend test ISO 1
47、0474, Steel and steel products Inspection documents 3 Terms and definitions For the purposes of this document, the definitions of the principal terms relating to magnetic properties given in IEC 60050-121 and IEC 60050-221 apply, as well as the following definitions: 3.1 edge camber greatest distanc
48、e between a longitudinal edge of the sheet and the line joining the two extremities of the measured length of this edge NOTE See IEC 60404-9. 3.2 flatness (wave factor) the property of a sheet or of a length of strip which is characterized by the wave factor, i.e. by the relation of the height of the wave to its length NOTE See IEC 60404-9. 3.3 number of bends number of alternate bends possible before the appearance of the first crack in the base metal visible to the n