Technical
Using
water is the cleanest media for preparing a surface for
paint
White
Papers and Articles provided here discuss the features and benefits
of using ultra high water pressure for coatings removal on steel
prior to painting.
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Grit Blasted Surface
Pits and crevices evident from
abrasive cleaning on magnified metal surface. Rust products
can be hidden in these metal folds preventing proper coating
adhesion of the substrate.
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Water Blasted Surface
Same magnification metal surface
using UHP waterjet cleaning. The substrate is without crevices
and the surface is clean and ready for paint.
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Effects of
Waterjet Cleaning on Surface and Preparation
By Lydia M.
Frenzel, PhD
This extraordinary
picture of a single water drop shows why researchers say a
100-micron diameter water droplet appears to hit the surface as a
5-10 micron particle. On the contrary, a 100-micron
solid abrasive (4 mil, 100 mesh) cannot physically get into a hole
less than 100-micron diameter. So that pit, or crack remains
uncleaned... More...
Posted with
permission of Lydia Frenzel, PhD Advisory
Council |
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Comparision Study
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Comparison of
Secondary Surface Preparation over Waterjetted Surfaces and Effects
on Coating Performance
By
Wayne McGaulley, William Shepperson, Fred Berry
The purpose of this study is to
investigate the performance of coatings over smooth water jetted
surfaces (on a macro level) compared to the performance of surfaces
with a measurable anchor tooth profile achieved by secondary
mechanical surface preparation methods. More...
Posted with permission of the authors |
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Flash Rusting: Characterization and Effect on Coating
Performance
Compared to the industry standard
of abrasive blasting, waterjetting eliminates hazardous airborne
pollutants, airborne dust that can damage or foul shipboard
mechanical systems, and abrasive cleanup and disposal. In
addition, the technology allows adjacent work by other trades. More...
Posted with permission of the JPCL, Similar articles are
available online at paintsquare.com |
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Removal by Grit or by UHP
Waterjetting
By Lydia M. Frenzel, PhD
In Mid May 2008, I
got two separate inquiries about "How much metal will UHP
waterjetting remove compared to dry blasting?" In each case,
the owner was looking at corroded areas and didn't have a protocol
or specification for UHP waterjetting for corrosion removal. More...
Posted with permission of
Lydia Frenzel, PhD Advisory Council |
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Standards |
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Trademarks and Patents
Ultrasweep®
Chariot Robotics, LLC holds the United
States Patent and Trademark Office registered trademark for
our Ultrasweep® process;
Registration number
3,554,051. For: Specialize metal surface preparation
services, namely, reduction of surface coating and the
removal of surface coatings, in class 40 ( U.S. CLS. 100,
103 and 106)
Our Ultrasweep® process is only available
through the technology developed for the ENVIROBOT®.
Using the Ultrasweep® process allows
for selective removal of coating layers. Ultrasweep® provides ultimate flexibility in
maintenance specifications with the ability to remove one or
more layers of coating layers. Our Ultrasweep® will
automatically spot blast areas of coating breakdown,
poor adhesion or corrosion to a WJ-2 (near white metal
blast equivalent) standard.
Patents
Chariot Robotics enjoys significant barriers to
entry from its proprietary technologies and broad
patents. The Company has been assigned the following
patents and exclusive licenses;
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U.S. Patent 5,628,271 - Apparatus and method for
removing coatings from the hulls of vessels using ultrahigh
pressure water - dated May 13, 1997;
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U.S. Patent 5,849,099 - Expansion of a previous
patent for an apparatus and method for removing coatings
from the hulls of vessels using ultra-high-pressure water -
dated December 15, 1998;
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U.S. Patent 6,425,340 - Further expansion of
patents for an apparatus and method for removing coatings
from the hulls of vessels using ultra-high-pressure water -
dated July 30, 2002;
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U.S. Patent 6,564,815 - A mobile robot for
cleaning, stripping, reconditioning, or refurbishing, a
coating on a metal work piece has a remote controlled power
module for locomotion and working head for removing coating
an utilizing an air gap magnetic system for adhesion - dated
June 2003. In addition, in 2003 application was made
for PCT international paten protection. In 2004 the
Company was awarded patent protection in Japan, Singapore
and seventeen European countries;
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U.S. Patent 6,595,152 - Further expansion of
patents for an apparatus and method for removing coating
from the hulls of vessels using ultra-high-pressure water
including both magnetic and vacuum adhesion retroactive to
1995 - patent approval dated July, 22, 2003;
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U.S. Patent 6,60 4,696 - Ultra-high-pressure
water jet ring with angled nozzles and a conical disperasion
pattern capable of operating at 60,000 psi covering a swath
of up to six inches - dated August 12, 2003.
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SSCP - the society for protective coatings NACE International - the corrosion society