Standard Test Methods for Field Measurement of Surface Profile of Blast Cleaned Steel

Importancia y uso:

5.1 The height of surface profile has been shown to be a factor in the performance of various coatings applied to steel. For this reason, surface profile should be measured prior to coating application to ensure conformance of a prepared surface to profile requirements specified by the manufacturer of a protective coating or the coating job specification.

Note 2: The peak count/peak density has been shown to be a factor in the performance of various coatings applied to steel. According to research performed by Roper, Weaver and Brandon6, an increase in peak count can improve the adhesion of some coatings to the prepared steel, as well as provide greater resistance to corrosion undercutting once the coating becomes damaged in service.

Note 3: Optical microscope methods serve as a referee method for surface profile measurement methods A and B. Profile depth designations are based on the concept of mean maximum profile (h max); this value is determined by averaging a given number (usually 20) of the highest peak to lowest valley measurements made in the field of view of a standard measuring microscope. This is done because of evidence that coating performance in any one small area is primarily influenced by the highest surface features in that area and not by the average roughness.7

Subcomité:

D01.46

Referida por:

A1055_A1055M-22, D7602-11R17, A0884_A0884M-19E01, A1078_A1078M-22, D6943-15R24, D5367-16R21, A1117-23, D6137-97R18, D5499-94R21, D8271-21, F1348_F1348M-91R23, A1055_A1055M-22, D5498-12AR18, A0884_A0884M-19E01, A0884_A0884M-19E01, A1055_A1055M-22, D7055-19R24, D3276-21, E3355-23, F2016-23

Volúmen:

06.02

Número ICS:

17.040.20 (Properties of surfaces), 77.140.01 (Iron and steel products in general)

Palabras clave:

abrasive; abrasive blast cleaning; anchor pattern; peak count; peak density; peak height; surface profile; surface roughness;