ASTM B530 コーティング厚さの磁気測定のための標準試験方法: Electrodeposited Nickel Coatings on Magnetic and non-magnetic Substrates includes non-destructive measurement of the thickness of electrodeposited nickel coatings on magnetic or non-magnetic substrates using a magnetic instrument.
意味と使い方

5.1 一般にコーティングの厚さはその性能にとって重要です. This magnetic method is suitable for non-destructive measurement of thickness and specification acceptance of certain nickel coatings.

5.2 The method requires that the magnetic properties of the coating and its substrate be the same as those of the reference standard used for instrument calibration adjustment.

5.3 The method should not be used to determine the thickness of self-catalyzed deposited nickel-phosphorus alloys containing more than 8% P in steel. As long as the measurements are made prior to any heat treatment, those coatings are sufficiently non-magnetic for test method B499 to be suitable for the determination.

B530-2014 “磁気法による膜厚測定の標準試験方法: 磁性および非磁性基板上のニッケル電着コーティング”

ステップ 1: 範囲

1.1 This test method includes non-destructive measurement of the thickness of an electrodeposited nickel coating on a magnetic or non-magnetic substrate using a magnetic instrument. 機器の操作に関するメーカーの指示を補完することを目的としています。, それらを置き換えないように.

1.2 These instruments measure the magnetic attraction between the magnet and the coating – substrate combination (として分類される “magnetic pull-off”), or the change in magnetic flux density within the probe (として分類される “電子”).

1.3 For this test method, two types of coating-substrate combinations can be encountered: タイプA, nickel coatings on magnetic substrates, and Type B nickel coatings on non-magnetic substrates.

1.4 The effective measurement range of instruments using the magnetic attraction principle is up to 50μm (2 ミル) for type A coatings and up to 25μm (1 ミル) for type B coatings. For gauges based on the principle of flux density variation, the effective range is much larger and measurements up to 1 んん (40 ミル) or higher can be made on both types of coatings.

1.5 Measurements made in accordance with this test method shall comply with the requirements of ISO Standard 2361, に印刷された 1982.

1.6 SI 単位で表される値は標準とみなされます。. 括弧内の値は参考値です。.

1.7 この規格は、すべての安全上の懸念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. 適切な安全衛生慣行を確立し、使用前に規制上の制限の適用可能性を判断することは、この規格のユーザーの責任です。.