ASTM E1734-2009 Standard Practice for Radioscopic Examination of Castings《铸件射线检验标准实施规程》.pdf
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1、Designation: E 1734 09Standard Practice forRadioscopic Examination of Castings1This standard is issued under the fixed designation E 1734; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in paren
2、theses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers a uniform procedure for radio-scopic examination of castings.1.2 This practice applies only to radioscopic examination inwhich an
3、 image is finally presented on a display screen(monitor) for evaluation. Test part acceptance may be based ona static or dynamic image. The examination results may berecorded for later review. This practice does not apply to fullyautomated systems in which evaluation is performed automati-cally by a
4、 computer.1.3 Due to the many complex geometries and part configu-rations inherent with castings, it is necessary to recognize thepotential limitations associated with obtaining complete radio-scopic coverage. Consideration shall be given to areas wheregeometry or part configuration does not allow f
5、or completeradioscopic coverage.1.4 The values stated in inch-pound units are to be regardedas the standard. The SI units given in parentheses are forinformation only.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of
6、the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E94 Guide for Radiographic ExaminationE 543 Specification for Agencies Performing Nondestruc-tive Testing
7、E 747 Practice for Design, Manufacture and MaterialGrouping Classification of Wire Image Quality Indicators(IQI) Used for RadiologyE 1000 Guide for RadioscopyE 1025 Practice for Design, Manufacture, and MaterialGrouping Classification of Hole-Type Image Quality Indi-cators (IQI) Used for RadiologyE
8、1255 Practice for RadioscopyE 1316 Terminology for Nondestructive ExaminationsE 1411 Practice for Qualification of Radioscopic SystemsE 1453 Guide for Storage of Magnetic Tape Media thatContains Analog or Digital Radioscopic DataE 1475 Guide for Data Fields for Computerized Transfer ofDigital Radiol
9、ogical Examination DataE 1647 Practice for Determining Contrast Sensitivity inRadiologyE 1742 Practice for Radiographic ExaminationE 2002 Practice for Determining Total Image Unsharpnessin Radiology2.2 ASNT Standards:3ASNT SNT-TC-1A Personnel Qualification and Certifica-tion in Nondestructive Testin
10、gANSI/ASNT CP-189 Personnel Qualification and Certifica-tion in Nondestructive Testing2.3 Military Standard:NAS-410 NAS Certification and Qualification of Nonde-structive Personnel (Quality Assurance Committee)43. Terminology3.1 DefinitionsDefinitions of terms applicable to thispractice may be found
11、 in Terminology E 1316.4. Significance and Use4.1 The requirements in this practice are intended to controlthe quality of the radioscopic images to produce satisfactoryand consistent results. This practice is not intended for con-trolling the acceptability of the casting. The radioscopicmethod may b
12、e used for detecting volumetric discontinuitiesand density variations that are within the sensitivity range ofthis practice. The dynamic aspects of radioscopy are useful formaximizing defect response.5. Basis of Application5.1 The following items shall be agreed upon between thepurchaser and the sup
13、plier:1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.01 onRadiology (X and Gamma) Method.Current edition approved July 1, 2009. Published August 2009. Originallyapproved in 1995. Last previous edition app
14、roved in 2004 as E 1734 - 04.2For 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.3Available from TheAmerican Soci
15、ety for Nondestructive Testing (ASNT), P.O.Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518.4Available from Aerospace Industries Association of America, Inc. 1250 EyeStreet N.W., Washington, DC 20005.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428
16、-2959, United States.5.1.1 Nondestructive Testing Agency EvaluationIf speci-fied in the contractual agreement, nondestructive testing (NDT)agencies shall be qualified and evaluated as described inPractice E 543. The applicable edition of Practice E 543 shallbe specified in the contractual agreement.
17、5.1.2 Personnel QualificationIf specified in the contrac-tual agreement, personnel performing examinations to thisstandard shall be qualified in accordance with a nationally orinternationally recognized NDT personnel qualification prac-tice or standard such as ANSI/ANST-CP-189, SNT-TC-1A,NAS-410 or
18、similar document and certified by the employer orcertifying agency, as applicable. The practice or standard usedand its applicable revision shall be identified in the contractualagreement between the using parties.5.1.3 Recording MediaIf required, the recording media tobe used shall be specified in
19、accordance with the requirementsof Section 6.5.1.4 Performance MeasurementsPerformance measure-ment shall be specified in accordance with the requirements ofSection 6.5.1.5 ProcedureProcedural requirements shall be speci-fied in the contractual agreement.5.1.6 RecordsRecords shall be specified in th
20、e contractualagreement.6. Apparatus6.1 Success of the radioscopic process depends on theoverall system configuration and the selection of appropriatesubsystem components. Guidance on the selection of sub-system components and the overall system configuration isprovided in Guide E 1000 and Practice E
21、 1255. Guidance onthe initial qualification and periodic re-qualification of theradioscopic system is provided in Practice E 1411. The suit-ability of the radioscopic system shall be demonstrated byattainment of the required image quality and compliance withall other requirements stipulated herein.6
22、.2 Equipment:6.2.1 Radiation Source (X-Ray or Gamma-Ray)Selectionof the appropriate source is dependent on variables regardingthe casting being examined, such as material composition andthickness. Guidance on selection of the radiation source maybe found in Practice E 1255.6.2.2 Manipulation Subsyst
23、emSelection of the appropri-ate manipulation system (where applicable) is dependent onvariables such as the size and orientation of the object beingexamined and the range of motions, speed of travel, andsmoothness of motion. Guidance on selection of the manipu-lation subsystem may be found in Practi
24、ce E 1255.6.2.3 Detector SubsystemSelection of the appropriate de-tection system is dependent on variables such as the materialand size of the object being examined and the energy andintensity of the radiation used for the examination. Guidanceon selection of the detector subsystem may be found in P
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