Standard Digital Reference Images for Titanium Castings
|Publication Date:||1 December 2011|
The digital reference images provided in the adjunct to this
standard illustrate various types and degrees of discontinuities
occurring in titanium castings.2 Use of this standard
for the specification or grading of castings requires procurement
of the adjunct digital reference images, which illustrate the
discontinuity types and severity levels. They are intended to
provide the following:
A guide enabling recognition of titanium casting discontinuities and their differentiation both as to type and degree through digital radiographic examination.
Example digital radiographic illustrations of discontinuities and a nomenclature for reference in acceptance standards, specifications and drawings.
The digital reference images consist of seventeen digital files each illustrating eight grades of increasing severity. The files illustrate seven common discontinuity types representing casting sections up to 1-in. (25.4-mm).
The reference radiographs were developed for casting sections up to 1 in. (25.4 mm) in thickness.
All areas of this standard may be open to agreement between the cognizant engineering organization and the supplier, or specific direction from the cognizant engineering organization. These items should be addressed in the purchase order or the contract.
NOTE 1-Each of the digital reference images contain an image of a step wedge and two duplex-wire gauges. Refer to Practice E2002 for wire pair details.
The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
These digital reference images are not intended to illustrate the types or degrees of discontinuities when performing film radiography. If performing film radiography of titanium castings, refer to Reference Radiographs E1320.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Only licensed copies of the software and images shall be utilized for production inspection. A copy of the ASTM/User license agreement shall be kept on file for audit purposes.
2 The digital reference images are considered to be applicable to all titanium castings, requiring close tolerances. Castings for which these images are applicable generally include those made by the lost wax, frozen mercury, ceramicast or shell mold processes.
*A Summary of Changes section appears at the end of this standard.