1.1 这些试验方法包括通过200号（75 μ m）或325号（45 μ m）筛测定湿磨或干磨瓷釉和其他金属陶瓷涂层中熔块的细度。 1.2 这两种方法如下所示: 章节 方法A-裁判法 方法B-常规方法 4至9 10至14岁 1.3 方法A旨在用于需要更高精度的裁判方法的情况，而方法B旨在满足需要快速、简化筛分测试方法的正常搪瓷工厂生产控制操作的需要。简化方法的准确性已被证明完全足以用于这种用途。然而，在需要高精度的情况下，不建议使用简化测试。 1.4 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。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法规限制的适用性。 1.5 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》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 3.1 玻璃料的细度直接影响其许多性能，例如熔融性、撕裂性、光泽度、不透明度、在浆料中的悬浮性和易于喷涂。

1.1 These test methods cover the determination of the fineness of frit in wet- or dry-milled porcelain enamels and other ceramic coatings for metals by means of the No. 200 (75-μm) or No. 325 (45-μm) sieve. 1.2 The two methods appear as follows: Sections Method A—Referee Method Method B—Routine Method 4 to 9 10 to 14 1.3 Method A is intended for use where a referee method of higher accuracy is required, while Method B is intended to meet the needs of normal enamel plant production control operations where a rapid, simplified method of sieve testing is required. The accuracy of the simplified method has proved to be entirely adequate for this use. The simplified test, however, is not recommended where high accuracy is required. 1.4 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. 1.5 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 ====== 3.1 The fineness of the frit has a direct bearing on many of its properties, such as fusibility, tearing, gloss, opacity, suspension in the slip, and ease of spraying.