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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This allows the coating dispersion to flow into and around the most complex shapes. Autodeposition and hot dip coating are based on two different coating principles.

The continuous formation of coating provides a film pgocess a high degree of surface protection and corrosion resistance.

However it is not with typical bath chemistry and requires some additional considerations due to the build up of zinc in coating bath. I have developed, researched, and produced autodeposition coatings, and lead this coatings to be applied in some automobile factories for many years.

The mildly acid bath liberates a small amount of iron from the steel autophoretiic being immersed, causing an immediate surface reaction that releases iron ions. Second line has just been commissioned for heavy vehicle brake plates. This is a revolutionary way to meet higher performance and corrosion resistance standards at a competitive price.

Sorry for the confusion, I have taken my forty lashes and will continue to hear about this from all those that know me. Typically, film thickness is controlled from 0. Latex films form by coalescence.

Autophoretic® Coating Process

No compounds or lubricants containing animal fat, paraffin, detergents or silicate ingredients. Considerably lower temperatures are required to cure the autodeposited parts. Not compatible with aluminum or galvanized material.

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A by-product of the heat-treating process No adhesive bonding materials such as tape, epoxy, etc. The chemical reaction continues in the second layer, which results in film deposition and increased film thickness instead of solids loss to dragout. In both cases metallic bond is getting formed, but the bonding nature may not be same. Initially, the deposition process is quite rapid, but slows down as the film increases in thickness.

Pencil hardness of 6H to 7H. Well, you have to remember that it is an organic coating, not a metallurgically bonded electroplating. If you try our search engine, I’m sure you can find some more. Depends on solvent, time, and temperature.

Since aitophoretic inception, aytophoretic unique process has been employed to coat billions of square feet of surface. The Autodeposition process can be successfully applied to galvanized substrates. 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.

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

The newly deposited organic film is adherent yet quite porous. All information presented is for general reference and does not represent a professional opinion nor the policy of an author’s employer.

Free from carbon enbrittlement. The bath viscosity is close to that of water with little or no organic solvents in the coating bath.

This unusual feature strongly limits carryover of coating costing into the rinse tanks and greatly reduces the demand for waste treatment. So I am very glad to join this discussion. These ions interact with the latex in solution causing coating deposition on the surface of the steel parts.

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We ocating two lines running with ACC. 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.

Uniformly coats the inside and outside of tubular shapes, complex assemblies, and narrow crevices. So, if you want to replace paint, it may be a great fit.

If not, I’m not so sure that this work would have legitimate scholarly value: Unlike coating processes that require a charge to deposit the coating i.

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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. Is not UV stable. Coats evenly on all surfaces; where it flows it coats with proces runs or sags. I know that these two processes are autopphoretic the same. 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.

But in case of electrocoating, the surface atom of the lattice may form bond with foreign atoms.