1、Designation:E12563(Reapproved 2013)Standard Reference Photographs forMagnetic Particle Indications on Ferrous Castings1This standard is issued under the fixed designation E125;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year
2、of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.These Reference Radiographs have been approved to
3、replace MIL-M-11473(ORD).These Reference Photographs2have beenreproduced through the courtesy of the Steel Founders Society from photographs obtained from its member companies.1.Scope1.1 This collection of reference photographs covers typesand degrees of discontinuities occurring in steel castings a
4、ndother types of ferrous castings detectable by the dry powdermagnetic particle method.1.2 These reference photographs are intended to assist in theclassification of those discontinuities revealed in ferrous cast-ings subjected to magnetic particle examination.1.3 These reference photographs are int
5、ended to be used forpurposes of comparison with the magnetic particle indicationsobserved on actual castings.2.Referenced Documents2.1 ASTM Standards:3E709 Guide for Magnetic Particle Testing2.2 ASTM Adjuncts:Reference Photographs for Magnetic Particle Indications23.Identification3.1 The types of di
6、scontinuities covered by the referencephotographs are listed and described in Table 1.Each type ofdiscontinuity is designated by Roman numerals I through VIIIas given in the table.3.2 The degrees of discontinuity severity,in increasingorder where applicable,are denoted by numbers 1 through 5.NOTE1To
7、 avoid any misunderstanding,it should be pointed out thereis no correlation between degrees of the various defects.For instance,Degree 3 of Type I is not equivalent to Degree 3 of Type II.3.3 Each reference photograph is identified with the propernumber and letter designation.4.Preparation4.1 The re
8、ference photographs represent magnetic particleindications as found on production steel castings.They repre-sent the actual size of the indications and the procedurefollowed was in accordance with Guide E709.The peakmagnetizing current employed was from 600 to 800Aand prodspacing from 4 to 10 in.4.2
9、 The white line indications as illustrated in most of thephotographs were obtained by painting the casting area with aslurry of lamp-black in kerosene,gasoline,or alcohol.A graymagnetic powder is then used.The result is a white indicationunder normal photographic methods.4.3 The black line indicatio
10、ns result from applying redmagnetic powder to the casting surface and photographing themagnetic particle indications.5.Basis for Use of Reference Photographs5.1 These reference photographs are intended for use whenthey are specified in the inquiry,contract,order,materialspecifications,or applicable
11、code,and when the limiting classof severity is mutually agreed upon by the manufacturer andthe purchaser.It is admitted that it is impossible to rigidlyinterpret magnetic particle indications on castings to a set ofphotographic references;consequently there is a need for closecooperation between the
12、 manufacturer and the purchaser.5.2 Unless otherwise specified all accessible surfaces of thecasting shall be examined.On many castings,however,onlycertain areas are sufficiently critical to justify this type ofexamination.In these cases the locations to be examined shallbe specifically agreed upon.
13、5.3 The severity class and the number of castings madefrom the same pattern to be given magnetic particle examina-tion shall constitute a part of the inquiry,contract,or order,orshall be as specified in the material specification or applicablecode.5.4 The limiting size and shape of the unit area to
14、beexamined shall be established by the applicable code or by1These reference photographs are under the jurisdiction of ASTM CommitteeE07 on Nondestructive Testing and are the direct responsibility of SubcommitteeE07.03 on Liquid Penetrant and Magnetic Particle Methods.Current edition approved June 1
15、,2013.Published June 2013.Originallyapproved in 1963.Last previous edition approved in 2008 as E125 63(2008).DOI:10.1520/E0125-63R13.2These reference photographs are available on four large charts arranged foreach type of discontinuity.The charts are available fromASTM Headquarters.OrderADJE0125.3Fo
16、r referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 mutual agreement of the manufacturer and the purchaser.When more than one type of discontinuity appears in thespecified area,agreement on this situation should
