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1、 . J IS JAPANESE I N D U STR I AL STANDARD Translated and Published by Japanese Standards Association JIS C 2504:2*00 Soft magnetic irons ICs 29.030 Descriptors : iron, magnetic properties of materials, magnetic materials, electromagnetism, Reference number : JIS C 2504 : 2000 (E) magnets, electroma
2、gnets, electrical equipment, magnetic cores, armatures 7 s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:30:38 MDTNo reproduction or networking permitted without license from IHS -,-,-
3、 2504 : 2000 Foreword This translation has been made based on the original Japanese Industrial Standard revised by the Minister of International Trade and Industry through deliberations at the Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law. Consequently
4、, two standards of JIS C 2503 : 1990 Soft magnetic iron bars and JIS C 2504 : 1990 Soft magnetic iron plates have been revised and unified in this standard, and newly named as “Soft magnetic irons“. Date of Establishment: 1954-12-18 Date of Revision: 2000-02-20 Date of Public Notice in Official Gaze
5、tte: 2000-02-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on Iron and Steel - . JIS C 2504:2000, First English edition published in 2000-10 Translated and published by: Japanese Standards Association 4-1-24,Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN r In the event of
6、 any doubts arising as to the contents, the original JIS is to be the final authority. 8 t 3 JSA2000 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 microfilm,
7、 without permission in writing from the publisher. Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:30:38 MDTNo reproduction or networking permitted without license from
8、IHS -,-,- STDmJIS C 2504-ENGL 2000 b 4933b08 05bb70L O29 M 8 JAPANESE INDUSTRIAL STANDARD Soft magnetic irons JI$ C 2504 : 2000 Introduction This Japanese Industrial Standard has been prepared based on Alloy class A (Irons) classified and standardized in IEC 60404-8-6 draft (68/157/ CDV) Magnetic ma
9、terials, Part 8 : Specification for individual materials Section 6 - Soft magnetic metallic materials without modifying the technical contents for the corresponding parts. In this Standard, the portions underlined with dots are the matters not specified in the corresponding International Standard. 1
10、 Scope This Japanese Industrial Standard specifies the general matters, char- acteristics, shapes and test methods of soft magnetic iron bars (hereafter referred to as “bars”), soft magnetic iron rods (hereafter referred to as “rods”), soft magnetic iron wires (hereafter referred to as ”wires”), sof
11、t magnetic iron sheets (hereafter referred to as “sheets”), and soft magnetic iron strips (hereafter referred to as “strips”) which are used as the iron cores, yokes, contacts of relays, electromagnets, magnetic clutches, brakes, generators and motors, and other magnetic shieldings. Note : The Inter
12、national Standard corresponding to this Standard is given be- low. IEC 60404-8-6 Draft (68/157/CDV) : 1996 Magnetic materials, Part 8 .- Specifications for individual materials Section 6-Soft magnetic metallic materials Informative reference : The IEC Standard number above is based on the new number
13、ing system of IEC Standards put in force on Janu- ary 1st 1997, and the Standard published before the said date is numbered by adding 60000 to the former num- ber. This is only the change in the numbering system and the contents remain unchanged. 2 Normative references The following standards contai
14、n provisions which, through reference in this Standard, constitute provisions of this Standard. If the indication of the year of coming into effect is given to these referred standards, only the edi- tion of indicated year constitutes the provision of this Standard but the revision and amendment mad
15、e thereafter are not applied. The normative references without the indication of the year of coming into effect apply limiting only to the most recent edition (including the amendment). JIS Z 2245 Rockwell hardness test-Test method IEC 60404-1 Draft (68/174/CDV) : 1998 Magnetic materials, Part 1 : C
16、lassification IEC 60404-4 : 1995 Magnetic materials, Part 4 : Method of measurement of d.c. magnetic properties of iron and steel 3 Definitions For the purpose of this Standard the following principal definitions apply: Copyright Japanese Standards Association Provided by IHS under license with JSAL
17、icensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:30:38 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS C 2504-ENGL 2000 = 4933b08 05bb702 765 I 2 C 2504 : 2000 a) magnetic flux density A vector quantity along a solenoid axis which de
18、fines the magnetic field at an optional point. It is expressed in the unit of tesla (T). coercive field strength The magnetic field strength which makes the mag- netic flux density zero. It is expressed in the unit of ampere per meter (Alm). b) c) ageing The relative change in coercive field strengt
19、h resulting from a heat treatment at 100 O C k 5 O C for 100 h. It is expressed in the unit of percent (%l. bar A straight product of uniform cross-section of round, square, rectangular or regular polygonal. rod A cold-drawn product of uniform cross-section of round or rectangular, sup- plied in str
20、aight lengths. d) e) f) wire A rolled or drawn product of uniform cross-section of round or rectangu- lar, supplied in coil. sheet and plate A flat rolled product of uniform cross-section supplied singly or in coil. The one with a width exceeding 600 mm and a thickness not more than 5 mm is called a
21、 sheet, and the one with a thickness exceeding 5 mm is called a plate. g) h) strip A flat rolled product of uniform cross-section supplied in coil or slit product, which is not more than 600 mm in width and not more than 5 mm in thickness. i) lot Material from the same heat, of the same form, produc
22、ed at the same time, and if annealed, heat treated together or sequentially in a continuous furnace. j) edge camber The edge camber is characterized by the greatest distance e be- tween an edge of the sheet or strip and the line joining the two extremities of the reference length L (refer to Fig. 1)
23、. Fig. 1 Example of edge camber k) flatness Flatness of a sheet or strip is characterized by the wave factor (which is the relation of the height h of the wave to its length L) (refer to Fig. 2). It is expressed in the unit of percent (%I, , Copyright Japanese Standards Association Provided by IHS u
24、nder license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:30:38 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 C 2504 : 2000 L i Fig. 2 Example of flatness 4 Classification and symbols Materials are classified and symbolized
25、accord- ing to the maximum value of coercive field strength in d.c. magnetic characteristics as stated in Table 1. Table 1 Classification and symbols Class and symbol _ SUY-o . SUY- 1 sw-2 ._. ._. -. - sw-3 ._ -. A-12 A-20 A40 A-80 A-120 A-240 5 Chemical composition The chemical composition of soft
26、magnetic irons are determined by - . ladle analysis, .-. and the values shall be as stated in Table 2 (see IEC 60404-1). . Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:30:38 MDTNo rep
27、roduction or networking permitted without license from IHS -,-,- 4 C 2504 : 2000 ! ? L ! x ! SW-2 SUY-3 A-12 -._ . _._ _ _. A-20 Table 2 Chemical composition 0.030 max. C I symbol Classand I 0.015 max. 0.030 max. A-120 Si 0.20 max. ._-_._._._. 0.10 max. Mn 0.50 max. ._-_ 0.03 min. 0.20 max. p(2) I A
28、l I Ti Notes (1) % (mass) means mass percentage. (2) When free-cutting property is required, the values of P and S may ex- ceed the upper limit of this Standard. 6 Quality 6 . 1 cracks or other defects detrimental to service shall be found. Appearance The finish of product shall be good and uniform
29、and no scratches, 6.2 D . C . magnetic property Sheets, strips, bars and wires shall be subjected to the tests of 8.2, and their d.c. magnetic properties shall be as stated in Table 3. The magnetic properties are those after heat treatment. The heat treatment conditions may be agreed between the par
30、ties concerned with acceptance. The ageing shall not exceed 10 %, if so required at the time of ordering. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:30:38 MDTNo reproduction or netw
31、orking permitted without license from IHS -,-,- . Class and symbol STD-JIS C 2504-ENGL 2000 4933bO 05bb705 474 m Coercive Magnetic flux density T field strength Magnetic field strength Alm 100 200 300 500 1 O00 4 O00 Alm 5 C 2504 : 2000 _ _ SUY-1 _._ . SUY-2 Table 3 D.C. magnetic properties(3) Borna
32、x. !-!:60A!k: ! ! 0 . ? ? k ! ! . I20mio: ! : ? O . * : . l!ioS.W.: !:6!?.*.!: 120- .F.?!: - - 1.15min. 1.30min. 1.45min. 1.60min. . SUY-3 A- 12 340- m e : - - 1.15 min. 1.30 min. 1.45min. 1.60 min. 12max. 1.15min. 1.25min. 1.30min. 1.40min. 1.45min. 1.60min. A-20 A-60 20max. 1.15min. 1.25min. 1.30m
33、in. 1.40min. 1.45min. 1.60min. 60 max. - 1.15min. 1.25min. 1.35min. 1.45min. 1.60min. A-80 I 80max. 1 - 1 1.1Omin. 1 1.20min. 1 1.30min. 1 1.45min. I 1.60min. A-120 A-240 120 max. - - 1.15min. 1.30min. 1.45min. 1.60min. 240 max. - - 1.15 min. 1.30 min. - 1.60 min. Note (3) The magnetic properties of
34、 bars, rods and wires with small cross-sectional area shall be measured on S.R. ring test specimens (see 8.2.1). Shape Sheet and strip Bar and wire 6.3 . Hardness and resistance to bending Sheets 2 . strips -2. bars and wires shall . Hardness Resistance to bending H v HRB 85 to 140 45 to 75 No crack
35、s shall appear on outside of test piece. 110 to 195 60 to 90 - be subjected to the tests of 8 . 3 and 8.4, and their hardness and resistance to bend- ing shall be as stated in Table 4. . Table 4 Hardness and resistance to bending . Remarks : For hot-rolled products these properties shall be as agree
36、d between the parties concerned with acceptance. the parties concerned with acceptance if the thickness is 2.5 mm or more. . _e.reglstcetobeog.shlbeasagreeobe.een . 7 Shapes and dimensional tolerances 7.1 Tolerances on thickness of cold-rolled sheets and strips Tolerances on thickness of cold-rolled
37、 sheets and strips shall be as stated in Table 5. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:30:38 MDTNo reproduction or networking permitted without license from IHS -,-,- STDmJIS
38、C 2504-ENGL 2000 4933b08 05bb70b 300 D 6 C 2504 : 2000 Thickness t Table 5 Tolerances on thickness of cold-rolled sheets and strips Unit: mm Tolerances on thickness for width w w d 150 150 after machining z shall . be subjected to adequate heat . treatment so as to posses necessary magnetic properti
39、es - and then . treated carefully so that no stress is caused during the han- dling. . Use of a protective container of adequate size is recom- mended. . 8.2.2 Windings The test specimen is covered with thin film of insulating mate- rial, then insulated copper wire is wound uniformly thereon as the
40、magnetic flux detecting coil. Then an insulated copper wire capable of passing the maximum mag- netizing current at the measurement is wound in one layer or multi layers by a number of turns which is enough to cause the maximum magnetic field strength, as the magnetizing coil. 8 . 2 . 3 Magnetic fie
41、ld strength The magnetic field strength shall be calculated from formula (3). The magnetizing current shall be measured at an accuracy of 50.5 %. where, H: N i : I : I : . (3) magnetic field strength (Alm) number of turns of magnetizing coil wound on test specimen (turn) magnetizing current (A) aver
42、age magnetic path (m) 8.2.4 Magnetic flux density The magnetic flux detecting coil (number of turns is Nz) is connected to an electronic integrator, ballistic galvanometer or fluxmeter, and the magnetic flux density shall be calculated from formula (4). (4) Q E = - A where, B : magnetic flux density
43、 (T) : magnetic flux (Wb) A : average cross-sectional area (m2) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:30:38 MDTNo reproduction or networking permitted without license from IHS
44、-,-,- STD-JIS C 2504-ENGL 2000 I 4933608 05bb709 OLT I I 9 C 2504 : 2000 8.2.5 Magnetic erasure The magnetic erasure of test specimen shall be carefully carried out by decreasing the magnetic field strength gradually from at least 5 kA/ m while the field is reversed repeatedly. 8.2.6 Coercive field
45、strength The coercive field strength shall be obtained in such a manner that the . magnetic field strength of 400 A/m is applied to the test specimen, then the field is reversed and the magnetic field strength when the mag- netic flux density becomes zero is measured. 8.3 Hardness test In the hardne
46、ss test the measurements are carried out b,y ! using B scale stated in JIS Z 2244 or JIS 2 2245. The measurement shall be car- ried out in accordance with JIS Z 2244 on strips with a thickness less than 2 mm. . The test specimens shall not be annealed. . 8.4 Bending test In the bending test, the res
47、istance to bending when the test specimen is bent through 90“ by means of a tester of the structure illustrated in Fig. 3 shall be examined. The test specimens shall not be annealed. . unit: mm 8.5 a) b) C) Fig. 3 Bending tester Dimensional tests Dimensional tests shall be as follows: Thickness The
48、measurement shall be made by using a micrometer with a mini- mum scale of 1/1 O00 mm. The position of measurement shall be as position 10 mm or more apart from the edges for a flat product of a width exceeding 25 mm, or a position on the lateral center for other products. Edge camber The sheet or strip is placed on a flat base as illustrated in Fig. 1, a ruler is placed so that the both ends touch the concave edge of the product and the maximum value of the distance between the edge and the ruler shall be