1.1 这种做法 2. 介绍了使用溶剂去除工艺进行荧光渗透检测的程序。它是一种无损检测方法，用于检测对表面开放的不连续性，如裂纹、接缝、搭接、冷隔、层压、孤立孔隙、贯穿泄漏或未熔合，适用于过程中、最终和维护检查。它可以有效地用于检查无孔金属材料，包括黑色和有色金属，以及非金属材料，如釉面或完全致密的陶瓷和某些无孔塑料和玻璃。 1.2 本实践还提供了参考: 1.2.1 通过该方法，可以审查单个组织推荐或要求的荧光渗透检测溶剂去除工艺，以确定其适用性和完整性。 1.2.2 用于制备处理荧光溶剂的工艺规范- 材料和零件的可拆卸液体渗透检验。强烈建议买方和制造商就具体技术达成协议。 1.2.3 用于组织与液体渗透检测相关的设施和人员。 1.3 本规程未说明或建议所获得适应症的评估标准。然而，应该指出的是，必须对显示进行解释或分类，然后进行评估。为此，必须有一个单独的代码或规范或特定协议来定义被视为可接受和不可接受的显示的类型、尺寸、位置和方向。 1.3.1 鼓励用户使用必要的材料和加工参数来检测可能影响产品评估的类型或严重程度。 1.4 本文件的所有方面均可由认可的工程组织和供应商达成协议，或接受认可的工程组织的具体指示。 1.5 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。 1.6 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。 1.7 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====== 5.1 液体渗透检测方法表明检测到的不连续性的存在、位置以及在有限程度上的性质和大小。 当需要比使用可见过程更高的灵敏度时，本规程主要用于便携性和局部检查区域，使用最少的设备。表面粗糙度可能是一个限制因素。如果是这样，当磨削或机加工不可行时，应考虑使用后乳化渗透剂等替代工艺。

1.1 This practice 2 covers procedures for fluorescent penetrant examination utilizing the solvent-removable process. It is a nondestructive testing method for detecting discontinuities that are open to the surface, such as cracks, seams, laps, cold shuts, laminations, isolated porosity, through leaks, or lack of fusion and is applicable to in-process, final, and maintenance examination. It can be effectively used in the examination of nonporous, metallic materials, both ferrous and nonferrous, and of nonmetallic materials such as glazed or fully densified ceramics and certain nonporous plastics and glass. 1.2 This practice also provides a reference: 1.2.1 By which a fluorescent penetrant examination solvent-removable process recommended or required by individual organizations can be reviewed to ascertain its applicability and completeness. 1.2.2 For use in the preparation of process specifications dealing with the fluorescent solvent-removable liquid penetrant examination of materials and parts. Agreement by the purchaser and the manufacturer regarding specific techniques is strongly recommended. 1.2.3 For use in the organization of the facilities and personnel concerned with the liquid penetrant examination. 1.3 This practice does not indicate or suggest standards for evaluation of the indications obtained. It should be pointed out, however, that indications must be interpreted or classified and then evaluated. For this purpose there must be a separate code or specification or a specific agreement to define the type, size, location, and direction of indications considered acceptable, and those considered unacceptable. 1.3.1 The user is encouraged to use materials and processing parameters necessary to detect conditions of a type or severity which could affect the evaluation of the product. 1.4 All areas of this document may be open to agreement between the cognizant engineering organization and the supplier, or specific direction from the cognizant engineering organization. 1.5 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. 1.6 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. 1.7 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 ====== 5.1 Liquid penetrant examination methods indicate the presence, location, and, to a limited extent, the nature and magnitude of the detected discontinuities. This practice is intended primarily for portability and for localized areas of examination, utilizing minimal equipment, when a higher level of sensitivity than can be achieved using visible process is required. Surface roughness may be a limiting factor. If so, an alternative process such as post-emulsified penetrant should be considered, when grinding or machining is not practical.