PaintSquare.com
Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site

 

Advertisement

Armakleen Company, The


Problem Solving Forum

| More

April 22 - April 28, 2013

Is there a place for using “rust convertors” in heavy-duty maintenance projects?

More items for Surface Preparation


Selected Answers

From Car F. of Municipal City on November 12, 2013:
I would never use a rust converter under a high performance coating, mainly because exotic coatings requires a good, sound, clean and anchor-profiled surface. Using a rust converter defeats the above requirements.

From Krzysztof Warchol of HEMPEL on November 9, 2013:
It is not an accident that all "heavy duty" paint systems are based on "heavy" abrasive blast cleaning to bare steel or almost bare steel, Sa 3 or Sa 2,5 according to ISO 8501-1 2007. Any "rust convertors" can be good enough for C1 or C2, according to ISO 12944.

From Javier Figarella of Ecotek Investments Inc. on May 22, 2013:
Rust converters, particularly those made of tannic or galic acid, are suitable to prepare ferrous surfaces prior to application of protective coatings, when the thicknes of the rust layer is less than 14 mils. the rust converter must contain a resin that adheres strongly to the surface and prevents the presence of oxygen due to impermeability. They reduce in many cases the use of costly abrasive methods of surface preparation.

From Simon Hope of Bilfinger Salamis on May 1, 2013:
     Rust converters are one of the theoretically wonderful materials that do not live up to the hype. Phosphoric acid- based materials tend to be water based and use what is effectively a domestic emulsion paint as the vehicle. This is fine for reacting the corrosion (iron oxide to iron phosphate) but effectively leaves a layer of emulsion paint on the surface. This is fine if you are putting on a weak, single-pack system, but it is debatable whether it is fit for purpose under a typical heavy duty system such as two-pack epoxies, as would be normally expected. There have been several failures where the mix of technologies is not fully understood. In reality, it is difficult to beat proper preparation with a correctly specified coating system applied, though 'snake oil' salesmen would love you to believe otherwise!

From trevor neale of TF Warren Group on April 30, 2013:
     Rust converters embrace a broad range of products. Major drawback is they do not generate a profile or anchor pattern and therefore are not suitable for high performance protective coatings where the surface preparation is an integral part of the specification to ensure long-term durability.Where there is a job or coating manufacturer's specification requiring abrasive blasting to ensure durability, they are not an option.

From Carl Thompson of Hill Brothers on April 26, 2013:
     Rust convertors, particularly those using phosphoric acid, are commonly used in these applications: 1.) Factories 2.) Refineries 3.) Industrial Plants 4.) Chemical Plants 5.) Ship Yards 6.) Fleet Operations 7.) Utilities 8.) Municipalities

Please sign in to submit your answer this question    

Tagged categories: Maintenance coating work; Rust; Surface preparation


Current PSF Question | Submit a PSF Question | Full PSF Archive

Advertisements
 
CHLOR*RID International Inc.
 
SOLUTIONS THAT WORK
 
Companies that invest in corrosion control use CHLOR RID products
  • Soluble salt removal liquid
  • Test kits to verify contamination levels
  • Surface passivation to hold the blast
INFO@CHLOR-RID.COM 800.422.3217
 

 
NLB Corporation
 
NLB Sure Shroud: Greater Protection and Flexibility
 
NLB’s Sure Shroud’s lighter weight and flexibility reduces operator fatigue and offers unmatched protection against high pressure hose ruptures. 10k to 40k psi rated.
 

 
SAFE Systems, Inc.
 
Enduroguard -
The Tough Cable
for a Tough Industry.
 
Reduce maintenance costs and down time, increase job site safety with Enduroguard Cable. Available exclusively from SAFE Systems. UL listed, flexible, abrasion resistant and cut resistant.
 

 
Tarps manufacturing, Inc.
 
QUALITY MADE IN AMERICA —Available near you!
 
CLICK to get a behind-the-scenes look at how Tarps Manufacturing makes the highest-quality tarps right here in the USA — available nationwide.
 

 
Industrial Vacuum Equipment Corp.
 
Hurricane Vacuums
& Dust Collectors
 
Vacuum and dust collector hose, filters and related accessories.
IndustrialVacuum.com
 

 
Novatek Corporation
 
Dustless Coatings Removal
 
Novatek Corporation, Dustless Coatings Removal Strip, clean and profile all dust free! Comply with new lead standards. Contact today: (866) 563-7800 www.Novatekco.com
 

 
Graco Inc.
 
Graco EcoQuip 2: Experience the Difference
 
While others claim their equipment is the same, none of them compare to Graco’s EcoQuip 2™ Vapor Abrasive® blasting line. Visit graco.com/ecoquip to learn more.
 

 
Sika-Us
 
Sika® Industrial Floor Coatings
 
Click to learn about floor and wall systems relied upon for performance, durability, easy maintenance and aesthetics across the every industry and environment.
 

 
Fischer Technology Inc.
 
FISCHER Expands Corrosion Product Line
 
Rounding out Fischer’s extensive line of products for measuring protective coatings in the corrosion industry is the new ultrasonic wall thickness gauge UMP series.
 

 
Bullard
 
Bullard Made in the USA
 
 

 
 
 

Technology Publishing Co., 1501 Reedsdale Street, Suite 2008, Pittsburgh, PA 15233

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL webmaster@paintsquare.com


The Technology Publishing Network

Durability + Design PaintSquare the Journal of Protective Coatings & Linings Paint BidTracker

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy Policy   |   Terms & Conditions   |   Support   |   Site Map   |   Search   |   Contact Us