AUTOPHORETIC COATING PROCESS PDF

Autophoretic Coating Process is a waterborne process in which organic polymeric emulsion gets chemically deposited on the surface of a clean metal substrate. Basics of Autophoretics: Also known as autodeposition, A-coat or AP. It is a waterborne process which depends on chemical reactions between a ferrous. AUTODEPOSITION is a waterborne process which depends on chemical reactions to achieve 5 — [email protected] Chemical Coating. Stage No. 6 — Plant.

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We have two lines running with ACC.

Autophoretic® Coating Process

Is not UV stable. So I am aufophoretic glad to join this discussion. Metal surface must be low to medium carbon, cold or hot rolled steel. Autodeposition and hot dip coating are based on two different coating principles.

Express Coat Corporation

So, if you want to replace paint, it may be a great fit. Coats evenly on all surfaces; where it flows it coats with no runs or sags.

High corrosion resistance Generally hrs. In hot dip coating, where Zn getting may be diffused into the lattice structure of the Fe and get attached simple substitution.

This diffusion control leads to a uniform coating thickness on complex shapes and in recessed areas. The elimination of these stages leads to considerable savings in required floor space, energy, and operating costs, as well as the total elimination of toxic metals from the process.

Electrocoat or electrodeposition is of course a painting process which is offered by several coatings manufacturers including PPG.

I’m searching for any independent cozting about autodeposition coating. The chemical reaction continues in the second layer, which results in film deposition and increased film thickness instead of solids loss to dragout.

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The newly deposited organic film is adherent yet quite porous. Sorry for the confusion, I have taken my cowting lashes and will continue to hear about this from all those that know me. These ions interact with the latex in solution causing coating deposition on the surface of the steel parts.

Please contact your local PPG office for that paper. Considerably lower temperatures are required to cure the autodeposited parts. Has anyone experience with this coating on galvanized zinc surface? These criteria have been established to ensure the maximum performance on each part. The coating thickness of the autodeposited film is time and temperature related.

In both cases metallic bond is getting formed, but the bonding nature may not be same. Second line has just been commissioned for heavy vehicle brake plates. The bath viscosity is close to that of water with little or no organic solvents in the coating bath. Typically, film thickness is controlled from 0.

Description of Autophoretic®

I know that these two processes are not the same. Coating may be bent back on itself with no cracking or peeling. However it is not with typical bath chemistry and requires some additional considerations due to the build up of zinc in coating bath. The mildly acid bath liberates a small amount of iron from the steel parts being immersed, causing an immediate surface reaction that releases iron ions. This forum is for technical discussions, not promotion of one technology over another, so please tell us coaing are the indications when electrocoating would be a better choice.

Presently, there are numerous installations in operation, both captive and job-shop, coating a variety of fabricated steel parts for the coahing and general industry markets. I just read what I wrote above and I am not sure why I said what I did. This is a revolutionary way to meet higher performance and corrosion resistance standards at a competitive price. Well, you have to remember that it is an organic coating, not a metallurgically bonded electroplating.

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If not, I’m not so sure that this work would have legitimate scholarly value: The metal surface of the part requires autophofetic cleaning and rinsing to prepare for the chemical reaction to take prpcess NO electrical charge or pre-coat is required.

But now we have another process reported to offer percent advantages over competitive coatings and 0 percent disadvantages. Not compatible with aluminum or galvanized material. If the condition of the received materials orocess from the above stated criteria, performance suffers significantly. This allows the coating dispersion to flow into and around the most complex shapes.

This process has been in commercial use since It’s one more tool in the arsenal, and will fill the needs some of the time; but you have to procdss at the actual parts and the actual service conditions. Uniformly coats the inside and outside of tubular shapes, complex assemblies, and narrow crevices.

On leaving the bath, the coating consists of two layers; one is a very cohesive reacted layer; while the other is composed of undeposited excess polymer and activator from the bath.