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astm method c

Differences in Surface Profile Measurements: ASTM D4417- Method B vs. Method C

What is Surface Profile and Why is it Necessary? Surface profile is defined as a measurement of the maximum peak-to-valley depth created by abrasive impingement against a surface during abrasive blast cleaning operations, or by an impact-type power tool. During abrasive blast cleaning, the mass of the abrasive and the velocity of the abrasive movement …

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illumination

Importance of Illumination on Coatings Projects

Industrial coatings project specifications invoke many standards and inspection check points that require visual acceptance. Proper illumination of the work area is vital when determining an acceptable product. If there is insufficient light, it is unlikely that a quality inspection of workmanship can be performed. But requiring excessive light and it may not be practical …

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sling psychrometer

The Psychrometer Duel: Old School vs. New School

Why do we need to measure ambient conditions? Ambient conditions are the prevailing conditions of air temperature, the moisture content of the air (relative humidity), and the temperature at which condensation will occur (dew point).  Most coating specifications have set requirements for monitoring and documenting results for surface and air temperature, relative humidity and dew …

The Psychrometer Duel: Old School vs. New School Read More »

coating edges

Challenges Encountered with In-Process Cleaning and Painting of Buildings

There are many challenges associated with cleaning and painting commercial buildings. Questions often arise regarding surface preparation, application and final thickness or appearance. Three of the many questions our consultancy group has encountered during the cleaning and painting of buildings are addressed in this article. The questions should be familiar situations to those in the …

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Measuring Peak Density Using Optical Grade Replica Tape  

Introduction Most industrial and marine protective coatings rely on a mechanical bond to the substrate to remain attached while in service. This bond is generally provided by a surface profile or anchor pattern that is imparted into the surface prior to application of the coating system and effectively increases the surface area of the substrate …

Measuring Peak Density Using Optical Grade Replica Tape   Read More »

calibration verification

Calibration, Verification of Accuracy and Adjustment… Synonyms or Differences in Terminology?

“Do I have to maintain inspection gage calibration and certification?  Why don’t they retain their calibration over time? Do I need to verify gage accuracy on a regular basis? How often? What is the difference between calibration and verification of accuracy?” These are common questions in the coatings industry.  A simple answer is that without …

Calibration, Verification of Accuracy and Adjustment… Synonyms or Differences in Terminology? Read More »

vapor blasting

New SSPC/NACE Wet Abrasive Blast Cleaning Standards

New SSPC/NACE wet abrasive blast cleaning (WAB) standards were approved in August 2015.  The standards define five degrees of cleaning that are created using a mixture of abrasive and water.  The mixture is created in one of three ways:  water is injected into the dry abrasive blast stream, abrasive is injected into a pressurized water …

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tooke gage

Coating Failure Analysis Learning Series – Part 3 – Tooke Gage

Welcome to the KTA Coating Failure Analysis Video Learning Series! This is a six-part video series that demonstrates the field and laboratory methods that were used to determine why a new coating system applied to a previously painted concrete floor had failed. Each part is standalone, addressing a different aspect of the evaluation, but when viewed …

Coating Failure Analysis Learning Series – Part 3 – Tooke Gage Read More »

positive material identification

Positive Material Identification (PMI)

Positive Material Identification has become a convenient and reliable way to determine the alloy compositions of materials. One of the greatest advantages of using a PMI unit is its portability, weighing approximately 5-8 lbs. with the battery loaded into the unit, it can be easily transported and used in confined areas or field applications. With the …

Positive Material Identification (PMI) Read More »

Type 2 dry film thickness gauge

[VIDEO] Verification of Accuracy Of Type 2 Gauges According To SSPC PA-2 & ASTM D7091

Type 2 Dry Film Thickness Gauge – Verification of Accuracy [embedyt] http://www.youtube.com/watch?v=i5WucAibO9s[/embedyt] Join KTAGage’s Matt Fajt for an explanation on Verification of Accuracy in relation to Type 2 gauges as it relates to SSPC PA-2 and ASTM D7091. For more information, or to view our product listings, please visit www.ktagage.com