1.1 本标准附件中提供的参考射线照片是原始射线照片的复制品，用于确定钛铸件中可能通过射线照相检查发现的一些不连续性类别和严重程度。使用本标准对铸件进行规范或分级需要购买辅助参考射线照片，以说明不连续类型和严重程度。应根据合同规范使用。 注1: 第一卷的原始射线照片是在110 kVp到220 kVp范围内用X射线拍摄的。第二卷的原始射线照片是用X射线拍摄的- 200 kVp到340 kVp范围内的光线。 1.2 这些胶片参考射线照片不是为了说明在进行数字射线照相时在钛铸件中发现的不连续类型和程度。如果对钛铸件进行数字射线照相，请参阅数字参考图像 E2669 . 1.3 这些参考射线照片包括两卷。第一卷，见 表1 ，适用于最大1英寸的壁厚。（0至25.4毫米）。第二卷，见 表2 ，适用于壁厚超过1英寸的情况。至2英寸。（25.4毫米至50.8毫米）。在没有其他适用标准的情况下，本标准可用于买方和制造商之间已达成协议的其他厚度。 注1: 1英寸。 = 25.4毫米。 注1: 1英寸。 = 25.4毫米。 注2: 参考射线照片不受本次修订的影响。自原始版本以来，未对辅助参考射线照片进行任何修订。任何版本的附加参考射线照片均有效，并可用于本标准。 1.4 为用于本标准而生产的板材是特意铸造的，以显示所需的不连续性。使用不同的工艺铸造板材，如所示 表1 和 表2 . 没有在任何板材上使用热等静压。 1.5 有时，参考射线照片辅助材料的制造工艺可能会有微小变化。 这些变化可能包括所用薄膜或加工化学品的变化、硬纸板垫模具或印刷的变化等。；然而，在所有情况下，这些变化均由插图监测小组委员会审查，并根据固定原型图像审查所有参考射线照片，以确保参考射线照片所代表的验收水平没有变化。因此，无论文本标准的生产日期或修订水平如何，附加参考射线照片均适用于本标准。 1.6 单位- 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.7 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 根据本标准使用参考射线照片的人员应符合国家或国际公认的无损检测人员资格认证惯例或标准（如ANSI/ASNT）进行射线照相解释的资格和授权- CP-189、SNT-TC-1A、NAS 410、ISO 9712或类似文件，并由业主或认证机构认证（如适用）。使用的惯例或标准及其适用版本应在使用方之间的合同协议中确定。应提供经认证的三级人员，以协助解释适用于参考射线照片的规范和产品要求（如果三级人员是射线照相口译员，则可能是同一个人）。 4.2 这些参考射线照片的设计可以根据这些射线照片规定验收标准，这些验收标准可以针对特定要求制定。射线照片是在产生不连续性的条件下生产的铸件。 参考射线照片拟用于符合以下要求的铸件厚度范围: 表1 和 表2 .

1.1 The reference radiographs provided in the adjunct to this standard are reproductions of original radiographs and are supplied as a means for establishing some of the categories and severity levels of discontinuities in titanium castings that may be revealed by radiographic examination. Use of this standard for the specification or grading of castings requires procurement of the adjunct reference radiographs which illustrate the discontinuity types and severity levels. They should be used in accordance with contractual specifications. Note 1: The original radiographs produced for Volume I were taken with X-rays in the range of 110 kVp to 220 kVp. The original radiographs produced for Volume II were taken with X-rays in the range of 200 kVp to 340 kVp. 1.2 These film reference radiographs are not intended to illustrate the types and degrees of discontinuities found in titanium castings when performing digital radiography. If performing digital radiography of titanium castings, refer to Digital Reference Images E2669 . 1.3 These reference radiographs consist of two volumes. Volume I, described in Table 1 , is applicable to a wall thickness of up to 1 in. (0 to 25.4 mm). Volume II, described in Table 2 , is applicable to a wall thickness of over 1 in. to 2 in. (25.4 mm to 50.8 mm). The standard may be used, where there is no other applicable standard, for other thicknesses for which agreement has been reached between purchaser and manufacturer. Note 1: 1 in. = 25.4 mm. Note 1: 1 in. = 25.4 mm. Note 2: The reference radiographs are not impacted by this revision. There have been no revisions to the adjunct reference radiographs since original issue. The adjunct reference radiographs of any issue remain valid and may be used to this standard. 1.4 The plates produced to serve for use in this standard were purposely cast to exhibit the desired discontinuity. The plates were cast using different processes as shown in Table 1 and Table 2 . Hot isostatic pressing was not used on any of the plates. 1.5 From time to time, there may be minor changes to the process for manufacturing of the reference radiograph adjunct materials. These changes could include changes in the films or processing chemicals used, changes in the dies or printing for the cardboard mats, etc.; however, in all cases, these changes are reviewed by the Illustration Monitoring Subcommittee and all reference radiographs are reviewed against a fixed prototype image to ensure that there are no changes to the acceptance level represented by the reference radiographs. Therefore, the adjunct reference radiographs remain valid for use with this standard regardless of the date of production or the revision level of the text standard. 1.6 Units— 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. 1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 Personnel utilizing reference radiographs to this standard shall be qualified and authorized to perform radiographic interpretation in accordance with a nationally or internationally recognized NDT personnel qualification practice or standard such as ANSI/ASNT-CP-189, SNT-TC-1A, NAS 410, ISO 9712, or a similar document and certified by the employer or certifying agency, as applicable. The practice or standard used and its applicable revision shall be identified in the contractual agreement between the using parties. A certified Level III shall be available to assist with interpreting specifications and product requirements as applied to the reference radiographs (if the Level III is the radiographic interpreter, this may be the same person). 4.2 These reference radiographs are designed so that acceptance standards, which may be developed for particular requirements, can be specified in terms of these radiographs. The radiographs are of castings that were produced under conditions designed to produce the discontinuities. The reference radiographs are intended to be used for casting thickness ranges in accordance with Table 1 and Table 2 .