PaintSquare.com


The First Word in Protective & Marine Coatings

A Product of Technology Publishing / PaintSquare
JPCL | PaintSquare News | Durability + Design | Paint BidTracker

Get Paint BidTracker's Water Facility Painting Opportunities of 2015

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

Advanced Recycling Systems
ADVANCED RECYCLING SYSTEMS (ARS)

Recycling Machines, Dust Collectors, Rapid Deployment units are time-tested and approved for the rugged industrial environment. Contact ARS today!
(330)536-8210


NLB Corporation
Rotating water jets increase coverage

NLB lance has rotating water jets (40,000 psi), widening the spray pattern to cover more area. Features air-driven swivel with dual triggers to enhance safety.


Axxiom Manufacturing
Revolutionary Units

By integrating Schmidt's Aftercoolers with our blast pots, these systems remove moisture from air and minimize equipment footprint on jobsite.
Call 1-800-231-2085


Atlantic Design, Inc.
MORE THAN JUST A SALES PITCH!

Simplicity! Dependability! Safety! We’ve built these features into every cleverly engineered inch of our newest models. It’s all there. 866.Call.ADI


Clemco Industries Corp.
Powerful Protection in a Small Package

Mounts inside blast helmet, alerts operator to dangerous breathing-air condition by audible, visual, and vibratory alarms. Easily calibrated, battery operated.


LS Industries
LS Blasters: Optimum Steel Cleaning Efficiency

Simplify surface prep with the precise shot control of LS Blasters. Our blast technology delivers optimum coverage and finish. 800-533-8008


Industrial Vacuum Equipment Corp.
Hurricane Vacuums
& Dust Collectors

Vacuum and dust collector hose, filters and related accessories.
IndustrialVacuum.com

 
 
 
Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker JPCL Europe

 
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   |   Site Map   |   Search   |   Contact Us
 

© Copyright 2000-2014, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com