ASTM E802-1995(2005) Standard Reference Radiographs for Gray Iron Castings Up to 4 1 2 in (114 mm) in Thickness《厚度4 1 2英寸(114mm)的灰口铸铁件用基准射线照相》.pdf

1、Designation: E 802 95 (Reapproved 2005)Standard Reference Radiographs forGray Iron Castings Up to 412 in. 114 mm in Thickness1This standard is issued under the fixed designation E 802; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision

2、, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 These reference radiographs for gray iron castingsconsist of one set of illustrations of centerline shr

3、inkage withseverity levels 1 to 5 using three radiation source types asfollows:1.1.1 Volume I: Medium Voltage (nominal 250 kVp) X-RayReference RadiographsSet of 5 severity levels in a 15 by17 in. folder.1.1.2 Volume II: Iridium-192 Reference RadiographsSetof 5 severity levels in a 15 by 17 in. folde

4、r.1.1.3 Volume III: Cobalt-60 Reference RadiographsSet of5 severity levels in a 15 by 17 in. folder.NOTE 1The reference radiograph films are an adjunct to this docu-ment and must be purchased separately from ASTM International ifneeded.1.2 The values stated in inch-pound units are to be regardedas t

5、he standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of 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.

6、Referenced Documents2.1 ASTM Standards:2E94 Guide for Radiographic TestingE 186 Reference Radiographs for Heavy-Walled (2 to 412-in. 51 to 114-mm) Steel CastingsE 446 Reference Radiographs for Steel Castings Up to 2 in.51 mm in ThicknessE 1316 Terminology for Nondestructive Examinations2.2 ASTM Adju

7、ncts:3Reference Radiographs for Gray Iron Castings Up to 412 in.114 mm in Thickness:Volume I, Medium Voltage (Nominal 250 kVp) X-rays4Volume II, Iridium-1925Volume III, Cobalt-6063. Terminology3.1 DefinitionsFor definitions of terms used in this docu-ment, see Terminology E 1316, Section D.4. Signif

8、icance and Use4.1 These reference radiographs, along with the referencedapplicable steel casting standards (Reference RadiographsE 186 and E 446), are supplied as a means of establishingcategories and severity levels of common internal discontinuitytypes in gray iron castings subjected to radiograph

9、ic examina-tion. They may be used in accordance with contractual speci-fications as agreed upon between purchaser and supplier.4.2 The use of this standard is not intended to be restrictedto the specific energy level or to the absolute thickness limitsthat are contained in this standard title. The t

10、itle is intended tobe descriptive and not restrictive. This document may be used,where there is no other applicable document, for other energylevels or thicknesses, or both, for which it is found to beapplicable and for which agreement has been reached betweenpurchaser and supplier.5. Method of Prep

11、aration5.1 The original radiographs used to prepare the accompa-nying reference radiographs were produced on high contrast,fine-grain film by the respective use of radiation energies statedin 1.1.1-1.1.3. The radiographs were made with a penetrametersensitivity as determined by ASTM penetrameters (s

12、ee GuideE94) of 2-2T. The reproductions have been prepared to anH discontinuities; gamma ray; gray iron; refer-ence radiographs; X-rayASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standa

13、rd are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif

14、 not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, whi

15、ch you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).E 802 95 (2005)2