ASTM A596 A596M-2014 Standard Test Method for Direct-Current Magnetic Properties of Materials Using the Ballistic Method and Ring Specimens《利用环形试验法和冲击法测定材料的直流磁性能的标准试验方法》.pdf
《ASTM A596 A596M-2014 Standard Test Method for Direct-Current Magnetic Properties of Materials Using the Ballistic Method and Ring Specimens《利用环形试验法和冲击法测定材料的直流磁性能的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM A596 A596M-2014 Standard Test Method for Direct-Current Magnetic Properties of Materials Using the Ballistic Method and Ring Specimens《利用环形试验法和冲击法测定材料的直流磁性能的标准试验方法》.pdf(10页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: A596/A596M 95 (Reapproved 2009)1A596/A596M 14Standard Test Method forDirect-Current Magnetic Properties of Materials Using theBallistic Method and Ring Specimens1This standard is issued under the fixed designation A596/A596M; the number immediately following the designation indicates th
2、e yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1 NOTEUpdated IEC information editorially in November 2009.1.
3、Scope1.1 This test method covers dc ballistic testing for the determination of basic magnetic properties of materials in the form ofring, toroidal, link, double-lapped Epstein cores, or other standard shapes which may be cut, stamped, machined, or ground fromcast, compacted, sintered, forged, or rol
4、led materials. It includes tests for normal induction and hysteresis taken under conditionsof steep wavefront reversals of the direct-current magnetic field strength.1.2 This test method shall be used in conjunction with Practice A34/A34M.1.3 This test method is suitable for a testing range from ver
5、y low magnetic field strength up to 200 or more Oe 15.9 or morekA/m. The lower limit is determined by integrator sensitivity and the upper limit by heat generation in the magnetizing winding.Special techniques and short duration testing may extend the upper limit of magnetic field strength.1.4 Testi
6、ng under this test method is inherently more accurate than other methods. When specified dimensional or shaperequirements are observed, the measurements are a good approximation to absolute properties. Test accuracy available is primarilylimited by the accuracy of instrumentation. In most cases, equ
7、ivalent results may be obtained using Test Method A773/A773M orthe test methods of IEC Publication 60404-4.1.5 This test method permits a choice of test specimen to permit measurement of properties in any desired direction relative tothe direction of crystallographic orientation without interference
8、 from external yoke systems.1.6 The symbols and abbreviated definitions used in this test method appear in Fig. 1 and Sections 5, 6, 9, and 10. For the officialdefinitions see Terminology A340. Note that the term flux density used in this document is synonymous with the term magneticinduction.1.7 Wa
9、rningMercury has been designated by EPA and many state agencies as a hazardous material that can cause centralnervous system, kidney, and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Cautionshould be taken when handling mercury and mercury-containing pr
10、oducts. See the applicable product Material Safety Data Sheet(MSDS) for details and EPAs website (http:/www.epa.gov/mercury/faq.htm ) for additional information. Users should be awarethat selling mercury or mercury-containing products, or both, in your state may be prohibited by state law.1.8 The va
11、lues stated in either customary (cgs-emu and inch-pound) units or SI units are to be regarded separately as standard.Within this test method, the SI units are shown in brackets except for the sections concerning calculations where there are separatesections for the respective unit systems. The value
12、s stated in each system are not exact equivalents; therefore, each system shallbe used independently of the other. Combining values from the two systems may result in nonconformance with this method.1.9 This standard does not purport to address all of the safety concerns, if any, associated with its
13、 use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A34/A34M Practice for Sampling and Procurement Testing of Magnetic Material
14、s1 This test method is under the jurisdiction of ASTM Committee A06 on Magnetic Properties and is the direct responsibility of Subcommittee A06.01 on Test Methods.Current edition approved Nov. 1, 2009May 1, 2014. Published January 2010June 2014. Originally approved in 1969. Last previous edition app
15、roved in 20042009 asA596/A596M95(2004)A596/A596M95(2009)1. DOI: 10.1520/A0596_A0596M-95R09E01. 10.1520/A0596_A0596M-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer t
16、o the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all change
17、s accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unit
18、ed States1A340 Terminology of Symbols and Definitions Relating to Magnetic TestingA341/A341M Test Method for Direct Current Magnetic Properties of Materials Using D-C Permeameters and the Ballistic TestMethodsA343/A343M Test Method for Alternating-Current Magnetic Properties of Materials at Power Fr
19、equencies Using Wattmeter-Ammeter-Voltmeter Method and 25-cm Epstein Test FrameA773/A773M Test Method for dc Magnetic Properties of Materials Using Ring and Permeameter Procedures with dc ElectronicHysteresigraphs2.2 IEC Standard:3Publication 60404-4 Ed. 2.2, Magnetic MaterialsPart 4: Methods of Mea
20、surement of the D-C Magnetic Properties ofMagnetically Soft Materials, IEC, 20083. Significance and Use3.1 Test methods using suitable ring-type specimens4 are the preferred methods of determining the basic magnetic propertiesof a material caused by the absence of demagnetizing effects and are well
21、suited for specification acceptance, service evaluation,and research and development.3.2 Provided the test specimen is representative of the bulk material as is usually the case for thin strip and wire, this test isalso suitable for design purposes.3.3 When the test specimen is not necessarily repre
22、sentative of the bulk material such as a ring machined from a large forgingor casting, the results of this test method may not be an accurate indicator of the magnetic properties of the bulk material. In suchinstances, the test results when viewed in context of past performance history will be usefu
23、l for judging the suitability of the currentmaterial for the intended application.4. Interferences4.1 This test method has several important requirements. Unless adequate inside diameter to outside diameter ratios aremaintained in the test specimens, the magnetic field strength will be excessively n
24、onuniform throughout the test specimen and themeasured parameters cannot be represented as material properties.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.4 Lloyd, M. G., “Errors in Magnetic Testing with Ring Specimens,Specimens,” Tech
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