1、Designation:E103313Standard Practice forElectromagnetic(Eddy Current)Examination of TypeF-Continuously Welded(CW)Ferromagnetic Pipe andTubing Above the Curie Temperature1This standard is issued under the fixed designation E1033;the number immediately following the designation indicates the year ofor
2、iginal adoption or,in the case of revision,the year 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.1.Scope*1.1 This practice covers a procedure for in-line,eddycurrent examinatio
3、n of continuously welded(CW)ferromag-netic pipe and tubing at temperatures above the Curie tempera-ture(approximately 1400F(760C),where the pipe is sub-stantially nonmagnetic or austenitic.1.2 This practice is intended for use on tubular productshaving nominal diameters of12in.(12.7 mm)to 4 in.(101.
4、6mm).These techniques may be used for larger-or smaller-diameter pipe and tubing as specified by the using parties.1.3 This practice is specifically applicable to eddy currenttesting using encircling coils,or probe coils.1.4 This practice does not establish acceptance criteria.They must be establish
5、ed by the using parties.1.5 UnitsThe values stated in inch-pound units are to beregarded as the standard.The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.1.6 This standard does not purport to address the saf
6、etyproblems associated with its use.It is the responsibility of theuser of this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:2E309 Practice for Eddy-Current Examination of
7、 Steel Tubu-lar Products Using Magnetic SaturationE543 Specification for Agencies Performing NondestructiveTestingE1316 Terminology for Nondestructive Examinations2.2 Other Documents:SNT-TC-1A Recommended Practice for Personnel Qualifi-cation and Certification in Nondestructive Testing3ANSI/ASNT-CP-
8、189 ASNT Standard for Qualification andCertification of Nondestructive Testing Personnel3NAS-410 NAS Certification and Qualification of Nonde-structive Personnel(Quality Assurance Committee)43.Terminology3.1 Standard terminology relating to electromagnetic testingmay be found in Terminology E1316,Se
9、ction C,Electromag-netic Testing.4.Summary of Practice4.1 In-line,automatic,eddy current examination of CWpipe utilizes probes or encircling coils,or both,mounted in thepass line to monitor the quality of pipe during production attemperatures ranging from 1600 to 2200F(870 to 1204C).4.2 Eddy current
10、 instrumentation provides timely and usefulinformation regarding the acceptability of CW pipe for qualitycontrol purposes as well as for early warning that unacceptablepipe is being produced.5.Significance and Use5.1 The purpose of this practice is to outline a procedure forthe in-line eddy current
11、examination of hot CW pipe for thedetection of major imperfections and repetitive discontinuities.5.2 A major advantage of in-line eddy current examinationof ferromagnetic CW pipe above the Curie temperature lies inthe enhanced signal-to-noise ratio and depth of penetrationobtained without the use o
12、f magnetic saturation.5.3 The eddy current method is capable of detecting andlocating weld imperfections commonly referred to as open1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.07 onElectromagnetic Met
13、hod.Current edition approved Dec.1,2013.Published December 2013.Originallyapproved in 1985.Last previous edition approved in 2009 as E1033-09.DOI:10.1520/E1033-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of
14、ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available fromAmerican Society for Nondestructive Testing(ASNT),P.O.Box28518,1711 Arlingate Ln.,Columbus,OH 43228-0518,http:/www.asnt.org.4Available from Aerospace Industries Association of America,Inc.
15、(AIA),1000Wilson Blvd.,Suite 1700,Arlington,VA22209-3928,http:/www.aia-aerospace.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 welds,cave welds,black spots(weld inclus
16、ions),and partialwelds(incomplete penetration).In addition,it will detectpipe-wall imperfections such as slivers,laps,and ring welds(end welds).5.4 The relative severity of the imperfections may beindicated by eddy current signal amplitude or phase,or both.An alarm level may be selected that utilizes signal amplitude orphase,or both,for automatic recording or marking,or both.5.5 Because the responses from natural discontinuities mayvary significantly from those from artificial discontinuities,ca
