1.1 本规程涵盖了将粒状和块状焦炭制备成块状和煤球样品的实验室程序，以便用反射光显微镜进行检查。制备的样品用于检查和鉴定焦炭微观结构中的成分，测量焦炭的反射率，分析焦炭微观结构。 注1: 筛孔尺寸由规范中的标准名称标识 E11 括号中给出的替代名称仅供参考，并不代表不同的标准筛孔尺寸 1.2 单位-- 以国际单位制或英寸-磅单位或其他非国际单位制表示的值应单独视为标准值。 每个系统中所述的值不一定是完全等效的；因此，为确保符合标准，每个系统应独立使用，两个系统的值不得组合。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 5.1 根据本规程的实验室程序制备的焦炭块或团块将具有平坦、无划痕的表面，适合使用反射光照明的显微镜进行检查。使用这种方法制备的块或压块的抛光表面将含有代表原始总样品的颗粒。抛光的焦炭块将保持拼接和平铺图像拼接序列生产中所需的碳形态的孔隙率和不受干扰的分布。显微孔隙度测量需要这样的图像。焦炭的微观结构和微观结构对焦炭强度和冶金焦炭在工业应用中的性能有很强的影响。 5.2 通过本规程制备的样品用于显微镜下测定焦炭中的结构成分（见试验方法 D5061 )以及焦炭反射率的测量。冶金焦炭检验的主要用途是质量分析，以确保焦炭生产要求，以及研发。

1.1 This practice covers laboratory procedures for the preparation of granular and lump coke into block and briquet samples for examination with a reflected light microscope. The samples prepared are used for examination and identification of the components in coke microtexture, the measurement of the reflectance of coke, and the analysis of coke microstructure. Note 1: Sieve size is identified by its standard designation in Specification E11 . The alternative designation given in parentheses is for information only and does not represent a different standard sieve size 1.2 Units— The values stated in either SI units or inch-pound units, or other non-SI units, are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other and values from the two systems shall not be combined. 1.3 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. 1.4 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 Blocks or briquets of coke prepared in accordance with the laboratory procedures of this practice will have flat, scratch-free surfaces suitable for examination with a microscope using reflected light illumination. The polished surface of the blocks or briquets prepared using this practice will contain particles representative of the original gross sample. Polished blocks of coke will preserve the porosity and undisturbed distributions of carbon forms required in the production of sequences of stitched and tiled image mosaics. Such images are required for microscopic porosity measurement. Microstructure and microtexture of coke have a strong influence on the coke strength, and the properties of the metallurgical coke in terms of its use in industrial applications. 5.2 Samples prepared by this practice are used for microscopical determination of the textural components in coke (see Test Method D5061 ) and the measurement of coke reflectance. Major uses for metallurgical coke examination are in quality analysis to ensure coke production requirements, and in research and development.