ISO-11531-1994.pdf
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1、INTERNATIONAL STANDARD IS0 11531 First edition 1994-04-I 5 Metallic materials - Earing test Mathaux mbtalliques - Essai de come Reference number IS0 I I 531 :I 994(E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9
2、972545001 Not for Resale, 04/27/2007 03:34:30 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 11531:1994(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparin
3、g International Standards is normally carried out through IS0 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 liai
4、son with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publicatio
5、n as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 11531 was prepared by Technical Committee ISO/TC 164, Mechanical testing of metals, Subcommittee SC 2, Ductility testing. 0 IS0 1994 All rights reserved. Unless otherwise
6、 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, without permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Sw
7、itzerland Printed in Switzerland ii Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 03:34:30 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATION
8、AL STANDARD 0 IS0 IS0 11531:1994(E) Metallic materials - Earing test 1 Scope This International Standard specifies a method for determining the ear height of metal sheet and strip of nominal thickness from 0,l mm to 3 mm after deep drawing. 2 Normative references The following standards contain prov
9、isions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the
10、 possibility of applying the most re- cent editions of the standards indicated below. Members of IEC and IS0 maintain registers of cur- rently valid International Standards. IS0 468:1982, Surface roughness - Parameters, their values and general rules for specifying require- ments. IS0 6507-I :I 982,
11、 Metallic materials - Hardness test - Vickers test - Part 1: HV 5 to HV 100. 3 Symbols and their meanings The meanings of the symbols used in the earing test are given in table 1 and illustrated in figures I and 2. Table 1 symbol Meaning Units a Thickness of test piece mm 4 Diameter of punch mm 4 Co
12、rner radius of punch mm 4 inside diameter of die R2 Inside corner radius of die mm db Diameter of circular blank mm ht Distance between outside bottom of cup and any ear peak mm h, Distance between outside bottom of cup and any ear valley mm ht .max Maximum value of I+ mm kvnin Minimum value of h, m
13、m .hl Mean value of /+ mm 7;. Mean value of h, mm h, Mean ear height mm h e,!nax Maximum ear height mm Z Ear height expressed as a percent- age % 43 Surface roughness parameter: arithmetic mean deviation of profile pm Figure 1 - Schematic section of cup 1 Copyright International Organization for Sta
14、ndardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 03:34:30 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 11531:1994(E) Punch Direction of blankholder force Blankholder Die I I Figure 2 - Schem
15、atic diagram of test equipment 4 Principle Cylindrical cups are drawn from circular blanks taken from metal sheets or strips, and the height of any earing produced by this process is measured. 5 Test equipment 5.1 The general arrangement of the test equipment is given in figure2. The punch shall be
16、capable of moving along the central axis of the die and blankholder and the blank. The equipment shall be such that ironing of ears due to the blankholder force and/or due to insufficient clearance between the punch and die is avoided and such that the cup can be removed without damaging the ears. 5
17、.2 The machine shall be capable of controlling the speed of drawing and the blankholder force. 5.3 The machine shall be equipped with a device for positioning the blank concentrically with the central axis of the machine. NOTE 1 The blank-positioning device is not required if blank is produced as pa
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