1、 IEC 60404-8-7 Edition 4.0 2017-09 REDLINE VERSION Magnetic materials Part 8-7: Specifications for individual materials Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fully-processed state IEC 60404-8-7:2017-09 RLV(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECT
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8、eased. Available online and also once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing 20 000 terms and definitions in English and French, with equivalent terms in 16 additional languages. Also known as the Inter
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11、pecifications for individual materials Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fully-processed state INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.030 ISBN 978-2-8322-4837-9 Registered trademark of the International Electrotechnical Commission Warning! Make su
12、re that you obtained this publication from an authorized distributor. colour inside 2 IEC 60404-8-7:2017 RLV IEC 2017 CONTENTS FOREWORD . 4 1 Scope 6 2 Normative references 6 3 Terms and definitions 7 4 Classification . 8 5 Designation . 8 6 General requirements 8 6.1 Production process . 8 6.2 Form
13、 of supply 8 6.3 Delivery condition . 9 6.4 Surface condition 9 6.5 Suitability for cutting . 9 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 10 7.2 Geometric characteristics and tolerances 11 7.2.1 Thickness 11 7.2
14、.2 Width . 12 7.2.3 Length . 13 7.2.4 Edge camber . 13 7.2.5 Flatness Edge wave (wave factor) . 13 7.2.6 Residual curvature . 13 7.2.7 Burr height . 13 7.3 Technological characteristics 13 7.3.1 Density 13 7.3.2 Stacking factor. 13 7.3.3 Number of bends . 13 7.3.4 Internal stresses 13 7.3.5 Insulati
15、on coating resistance . 14 8 Inspection and testing 14 8.1 General . 14 8.2 Selection of samples . 14 8.3 Preparation of test specimens . 15 8.3.1 Magnetic properties . 15 8.3.2 Geometrical characteristics and tolerances 15 8.3.3 Technological characteristics . 15 8.4 Test methods 16 8.4.1 General .
16、 16 8.4.2 Magnetic properties . 16 8.4.3 Geometrical characteristics and tolerances 16 8.4.4 Technological characteristics . 17 8.5 Retests . 17 9 Marking, labelling and packaging . 17 IEC 60404-8-7:2017 RLV IEC 2017 3 10 Complaints 18 11 Information to be supplied by the purchaser 18 Annex A (infor
17、mative) European steel designation . Bibliography 20 Table 1 Technological and magnetic properties of the conventional grades of grain- oriented material electrical steel strip and sheet . 10 Table 2 Technological and magnetic properties of the high permeability grades of grain-oriented material ele
18、ctrical steel strip and sheet 11 Table 3 Tolerances on nominal width . 12 4 IEC 60404-8-7:2017 RLV IEC 2017 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MAGNETIC MATERIALS Part 8-7: Specifications for individual materials Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fu
19、lly-processed state FOREWORD 1) The International Electrotechnical 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 st
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28、ing 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 this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is
29、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 any or all such patent rights. DISCLAIMER This Redline version is not an official IEC Standard and is intended only to provide the user wi
30、th an indication of what changes have been made to the previous version. Only the current version of the standard is to be considered the official document. This Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. A vertic
31、al bar appears in the margin wherever a change has been made. Additions are in green text, deletions are in strikethrough red text. IEC 60404-8-7:2017 RLV IEC 2017 5 International Standard IEC 60404-8-7 has been prepared by IEC technical committee 68: Magnetic alloys and steels. This fourth edition
32、cancels and replaces the third edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: extension of the range of electrical steels to include the improved grades. The text of thi
33、s International Standard is based on the following documents: CDV Report on voting 68/545/CDV 68/561/RVC Full information on the voting for the approval of this International Standard can be found in the report on voting indicated in the above table. This document has been drafted in accordance with
34、 the ISO/IEC Directives, Part 2. A list of all the parts in the IEC 60404 series, published under the general title Magnetic materials, can be found on the IEC website. The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC we
35、bsite under “http:/webstore.iec.ch“ in the data related to the specific document. At this date, the document will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IMPORTANT The “colour inside” logo on the cov
36、er page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this publication using a colour printer. 6 IEC 60404-8-7:2017 RLV IEC 2017 MAGNETIC MATERIALS Part 8-7: Specifications for indi
37、vidual 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, 0,27 mm, 0,30 mm and 0,35 mm. In par
38、ticular, it gives general requirements, magnetic properties, geometric characteristics, tolerances and technological characteristics, as well as inspection procedures. This document applies to Goss textured grain-oriented electrical steel strip and sheet supplied in the final annealed condition in c
39、oils or sheets, and intended for the construction of magnetic circuits. The grades are grouped into two classes: conventional grades; high permeability grades, including grades which may be delivered in the domain refined condition. They correspond to Class C22 of IEC 60404-1. 2 Normative references
40、 The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appli
41、es. IEC 60050-121, International Electrotechnical Vocabulary Part 121: Electromagnetism (available at http:/www.electropedia.org/) IEC 60050-221, International Electrotechnical Vocabulary Chapter 221: Magnetic materials and components (available at http:/www.electropedia.org/) IEC 60404-1, Magnetic
42、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, Magnetic materials Part 2: Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of
43、 an Epstein frame IEC 60404-3:1992, Magnetic materials Part 3: Methods of measurement of the magnetic properties of magnetic sheet and strip by means of a single sheet tester IEC 60404-3:1992/AMD1:2002 IEC 60404-9, Magnetic materials Part 9: Methods of determination of the geometrical characteristic
44、s of magnetic steel sheet and strip IEC 60404-8-7:2017 RLV IEC 2017 7 IEC 60404-11, Magnetic materials Part 11: Method of test for the determination of surface insulation resistance of magnetic sheet and strip IEC 60404-13, Magnetic materials Part 13: Methods of measurement of density, resistivity a
45、nd 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 10474, Steel and steel products Inspection documents 3 Terms and definitions For the
46、purposes of this document, the terms and definitions of the principal terms relating to magnetic properties given in IEC 60050-121 and IEC 60050-221 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: availab
47、le at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 3.1 edge camber greatest distance between a longitudinal edge of a length of strip or a sheet and the line joining the two extremities of the measured length of this edge Note 1 to entry: See IEC 60404
48、-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. 3.2 edge wave wave factor variations of flatness of a length of strip or a sheet taking a form
49、of waves at the slit edge of the product Note 1 to entry: The edge wave is characterized by the wave factor which is the relation of the height of the wave to its length, expressed as a percentage. 3.3 number of bends number of alternate bends possible before the appearance of the first crack in the base metal visible to the naked eye Note 1 to entry: The number of bends constitutes an indication of the ductility of the material product. 3.4 internal stresses st
