1.1 本文给出了在试板上制备均匀涂层厚度薄膜的五种方法。这些做法包括: 实践A-自动喷涂机应用 实践B-电机驱动浸涂机的应用 C电机驱动叶片薄膜应用实践 实践D-手持式喷枪应用 实践电动手持式刀片贴膜应用 1.2 实践中所述的钢丝缠绕下降杆的使用 D4147 也可能是生产均匀涂层厚度薄膜的合适方法。 1.3 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.4 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。 1.5 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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 本规程适用于设计用于在工厂或现场喷涂物体的涂料。尤其重要的是，它可用于评估金属涂层的外观性能，如光泽和颜色。 4.2 通过本试验方法涂覆的涂层可能会出现轻微的桔皮或喷雾波。

1.1 Five practices are given for preparing films of uniform thickness of coatings on test panels. These practices are: Practice A—Automated Spray Machine Application Practice B—Motor-Driven Dip Coater Application Practice C—Motor-Driven Blade Film Application Practice D—Hand-Held Spray Gun Application Practice E—Hand-Held Blade Film Application 1.2 The use of wire-wound drawdown bars as described in Practice D4147 may also be an appropriate method for producing films of uniform coating thickness. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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 ====== 4.1 This practice should be used for those coatings that are designed for spray applications of objects in the factory or in the field. It is particularly important that it be used in the evaluation of metallic coatings for appearance properties, such as gloss and color. 4.2 Coatings applied by this test method may exhibit a slight orange-peel or spray wave.