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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A by-product of the heat-treating process No adhesive bonding materials such as tape, epoxy, etc. One through electric circuit another without. This allows the chemical activators to diffuse rapidly in the film and etch the surface of the metal. Pencil hardness of 6H to 7H. All information presented is for general reference and does not represent a professional opinion nor the policy of an author’s employer.

But now we have another process reported autohporetic offer percent advantages over competitive coatings and 0 percent disadvantages.

Express Coat Corporation

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.

No compounds or lubricants containing animal fat, paraffin, detergents or silicate ingredients. Of course, that doesn’t mean that ALL parts will chip and rust! This process has been in commercial use since Second line has just been coatingg for heavy vehicle brake plates.

Autophoretic® Coating Process

Since this process involves a mild acid acting on the base part, can it result in delayed cracking under stress from hydrogen damage on a quench and tempered part as with other processes i.

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This diffusion control leads to a uniform coating thickness on complex shapes and in recessed areas.

The line would most likely only be able to process zinc substrates and not plain steel at the same time. No tool markers, die, bluing or coil markings. Unlike coating processes that require a charge to deposit the coating i. Cowting have developed, researched, and produced autodeposition coatings, and lead this coatings to be applied in some automobile factories for many years.

However it is not with typical bath chemistry and requires some additional considerations due to the build up of zinc in coating bath. I know that these two processes are not the same. High corrosion resistance Generally hrs. Not compatible with aluminum or galvanized material.

The newly deposited organic film is adherent yet quite porous. Uniformly coats the inside and outside of tubular shapes, complex assemblies, and narrow crevices. Considerably lower temperatures are required to cure the autodeposited parts. The bath viscosity is close to that of water with little or no organic solvents in the coating bath. Are there procedures in place to preclude zutophoretic damage in such parts? I’m searching for any independent research about autodeposition autophoreic.

Free from carbon enbrittlement. In both cases metallic bond is getting formed, but the bonding nature may not be same. The chemical reaction with the metal and the paint flows quickly as the film builds providing a self-limiting feature which results in a uniform thickness for the entire part.

Latex films form by coalescence. Withstands nicking and marring for better handling. This forum is for technical discussions, not promotion of one technology over another, so please tell us what are the indications when electrocoating would be a better choice. This allows the coating dispersion to flow into and around the most complex shapes. Coats evenly on all surfaces; where it flows it coats with no runs or sags.

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It’s one more tool in the arsenal, and will fill the needs some of the time; but you have to look at the actual parts and the actual service conditions. The chemical reaction continues in the second layer, which results in film deposition and increased film thickness instead of solids loss to dragout. So, if you want to replace paint, it may be a great fit.

Sorry for the confusion, I have taken my forty lashes and will continue to hear about this from all those that know me. Please contact your local PPG office for that paper.

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. Thomas Moffitt Massachusett’s Office of Technical Assistance, Boston, MA Well, you have to remember that it is an organic coating, not a metallurgically bonded electroplating. The Autodeposition process can be successfully applied to galvanized substrates. Has anyone experience with this coating on galvanized zinc surface?

These ions interact autphoretic the latex in solution causing coating deposition autophortic the surface of the steel parts.

Autodeposition and hot dip coating are based on two different coating principles. If you try our search engine, I’m sure you can find some more.

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