Tag Archives: corrosion

Why is steel gray after Waterjetting (hydroblasting)

July 31, 2017

0 Comments

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

Continue reading...

BHR Group 2016 23rd International Conference on Waterjetting

November 13, 2016

0 Comments

The WJTA-IMCA exhibition in New Orleans is over for 2016.   I missed a good exhibition and round-table of practical talks and a chance to mingle with colleagues. However, I was preparing for the BHR Group Waterjetting 2016 conference in Seattle on Nov 15-18. This BHR group conference is typically held in Europe so it […]

Continue reading...

Newsletter Advisory Council NACE Meeting 2016-03 WJ IN Vancouver BC

September 19, 2016

0 Comments

New Build-Brazil; ISO Meeting Trip Report NACE Corrosion 2016 March Vancouver BC By: Lydia Frenzel I, Lydia Frenzel, scrutinized the program to see if the UHP WJ/ paint maintenance community might find a niche for applications as this conference has paint/coatings, railcar, marine, and pipeline sections but focuses on corrosion, cathodic protection, alloys-and metals. Prior […]

Continue reading...

Microscopic Analysis of Steel after Waterjet Cleaning

February 25, 2016

2 Comments

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 […]

Continue reading...

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

February 4, 2016

0 Comments

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 […]

Continue reading...

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

August 27, 2015

0 Comments

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 […]

Continue reading...