ASTM B530 Standard test Pamamaraan para sa Magnetic pagsukat ng patong kapal: 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.
Kahulugan at paggamit

5.1 The thickness of the coating is generally important to its performance. 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 “Standard na paraan ng pagsubok para sa Pagsukat ng kapal ng Coating sa pamamagitan ng magnetic method: Electrodeposited nickel Coatings sa magnetic at di magnetic substrates”

Hakbang 1: Saklaw

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. It is intended to complement the manufacturer’s instructions on the operation of the instrument, hindi na palitan ang mga ito.

1.2 These instruments measure the magnetic attraction between the magnet and the coating – substrate combination (classified as “magnetic pull-off”), or the change in magnetic flux density within the probe (classified as “electron”).

1.3 For this test method, two types of coating-substrate combinations can be encountered: Type 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 mils) for type A coatings and up to 25μm (1 mil) 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 mm (40 mils) 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, printed in 1982.

1.6 Values expressed in SI units shall be considered standard. Ang mga halaga na ibinigay sa mga panaklong ay para sa sanggunian lamang.

1.7 Ang pamantayang ito ay hindi nilayon upang matugunan ang lahat ng mga alalahanin sa kaligtasan, kung meron man, na nauugnay sa paggamit nito. Responsibilidad ng mga gumagamit ng pamantayang ito na magtatag ng angkop na mga kasanayan sa kaligtasan at kalusugan at upang matukoy ang pagiging angkop ng mga paghihigpit sa regulasyon bago gamitin.