意味と目的
4.1 この実践では、3 つのステップで正確な厚さ測定を保証することについて説明します。: 膜厚測定器の校正, verification and adjustment, as well as on the black metal and non-ferrous metal base material to obtain the correct coating thickness measurement method.

4.2 commercial and industrial coating project of many specifications require a coating system in minimum and maximum dry film thickness of each layer. 加えて, most high-performance coating manufacturers will guarantee the coating system partly based on achieving the proper thickness for each layer and the entire coating system. Recommendations published by paint manufacturers on product data sheets can become management documents even if project specifications are not provided. Equipment manufacturers produce nondestructive coating thickness testers that measure the cumulative or individual thickness of a coating after drying. The manufacturer usually provides information on the adjustment and use of these gauges in the form of operating instructions. Users of this equipment need to understand the proper operation of these equipment, including methods to verify the accuracy of the equipment before, during and after use, as well as measurement procedures.

ASTM D7091-2022 鉄金属に適用される非磁性および非導電性コーティングおよび非鉄金属に適用される非磁性および非導電性コーティングの乾燥膜厚の非破壊測定に関する標準実務

の範囲
1.1 This practice describes the use of magnetic and eddy current meters for dry film thickness measurements. This practice is intended to complement the manufacturer’s instructions for the manual operation of the gauges, それらを置き換えないように. It includes definitions of key terms, reference documents, meaning and use in practice, advantages and limitations of coating thickness gauges, and a description of specimens. It describes the methods and recommended frequencies for verifying the accuracy of the gauges and adjusting the equipment, and lists the reporting recommendations.

1.2 the program does not apply to the meter/probe easy deformation under the load of the coating, because the measuring probe need to be placed directly on the coating surface to obtain readings. 5.7 describes the measurements on the soft coating or sticky coating.

1.3 Coating thickness can be measured using various measuring tools. These gauges are divided into “磁気引き離し” そして “電子”. They use a sensing probe or magnet to measure the gap (距離) between the base metal and the probe. This measuring distance is displayed by the measuring tool as the coating thickness.

ASTM D7091-2022 鉄金属に適用される非磁性および非導電性コーティングおよび非鉄金属に適用される非磁性および非導電性コーティングの乾燥膜厚の非破壊測定に関する標準実務

1.4 The coating thickness varies greatly over the entire surface. したがって, obtaining single-point measurements may not accurately represent the actual coating system thickness. SSPC-PA 2 specifies the frequency of coating thickness measurements based on the size of the coating area. The measurement frequencies of coated steel beams (beams) and coated test plates are also provided in the appendix of SSPC-PA 2. The management code is responsible for providing the user with the minimum and maximum coating thickness for each layer and the entire coating system.

1.5 SI 単位に対する値は標準とみなされます。. The SI units given in parentheses value is for reference only, not be regarded as standard.

1.6 この規格は、すべての安全問題に対処することを目的としたものではありません, もしあれば, その使用に関連する. 適切な安全性を確立するのは、この規格の使用者の責任です。, 健康および環境慣行を確認し、使用前に規制制限の適用可能性を判断するため.

1.7 この国際規格は、国際規格開発の原則に関する決定で確立された国際的に認められた標準化原則に従って開発されました。, 世界貿易機関の貿易の技術的障壁に関する委員会が発行したガイドラインと勧告.