Tag Archives: paint

Why is steel matte gray after Waterjetting (hydroblasting)

July 31, 2017

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Why is Steel dark Gray after hydroblasting?  What does the profile under corrosion look like? A short monograph. dark grey steel  

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WJTA-IMCA Conference Exhibition 2017-Oct New Orleans

July 31, 2017

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WaterJetting Technology Association – Industrial Municipal Cleaning Association WJTA-IMCA Conference & Expo ERNEST N. MORIAL CONVENTION CENTER October 25-27, 2017 New Orleans Eight Reasons Leading Companies are Attending the WJTA-IMCA Conference & Expo Every year, the most forward-looking and progressive contractors, facility/asset owners, and suppliers of all sizes have high level participants at the WJTA-IMCA. […]

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Microscopic Analysis of Steel after Waterjet Cleaning

February 25, 2016

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In the late 1990’s,  I received a report from Materials Evaluation Laboratory.  The report is copyrighted.  The pump company had cleaned UHP WJ on panels supplied by a major oil company.  Materials Evaluation Laboratory analyzed the substrate with microscopy and metallurgy compared to abrasive blasting.  This was at the time that UHP WJ was scarce and […]

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Comparison of Wet Abrasive Blast (WAB) and Dry Abrasive Blast Cleaning

February 4, 2016

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There are many methods of wet abrasive blast cleaning (WAB) in surface preparation to remove coatings. Since the 1980’s, Carolina Equipment and Supply Co. (CESCO) has been supplying WAB equipment  along with recycling methods. Recently CESCO sent me two youtubes to directly compare traditional dry abrasive blast cleaning and Wet Abrasive Blast Cleaning using their […]

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Quality of Water for Use in High Pressure Pumps

October 29, 2015

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For 30 years, I have received questions about the quality of water that should be used for removal of coatings. How much dissolved material or minerals gets left on the surface? Just recently after an hour long webinar to 200 people, the questions was “What shoul the quality of the water be?” Among the first […]

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Surface Preparation- Why surfaces with more surface area look darker.

August 27, 2015

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Surface Appearance with Surface Area. Back in the early 80’s, Dr. Lydia Frenzel and myself took a series of water-jet processed steel panels and examined them with a scanning electron microscope. We were hoping to receive confirmation of what our computer models told us; that is, water jetting at or above a threshold pressure produced […]

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