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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Initially, the deposition process is quite rapid, but slows down as the film increases in thickness. If you try our search engine, I’m sure you can find some more. 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.

Express Coat Corporation

I have developed, researched, and produced autodeposition coatings, and lead this coatings to be applied in some automobile factories for many years. Pencil hardness of 6H to 7H. Free from carbon enbrittlement. This allows the chemical activators to diffuse rapidly in the film and etch the surface of the metal.

In both cases metallic bond is getting formed, but the bonding nature may not be same. The bath viscosity is close to that of water with little or no organic solvents in the coating bath.

These ions interact with the latex in solution causing coating deposition on the surface of the steel parts. 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.

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Considerably lower temperatures are required to cure the autodeposited parts. This is a revolutionary way to meet higher performance and corrosion resistance standards at a competitive price.

Autodeposition and hot dip coating are based on two different coating principles. Not compatible with aluminum or autpohoretic material. The continuous formation of coating provides a film with a high degree of surface protection and corrosion resistance. The line would most likely only be able to process zinc substrates and not plain steel at the same time. All information presented is for general reference and does not represent a professional opinion nor the policy of an author’s employer.

Since its inception, this unique process orocess been employed to coat billions of square feet of surface. The chemical reaction continues in the second layer, which results in film deposition and increased film thickness instead of solids loss to dragout.

Autophoretic Coating Plants, Autophoretic Coating Plant, Manufacturer, India

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. Coating may be bent back on itself with no cracking or peeling. One through electric circuit another without. We have two lines running with ACC. The coating thickness of the autodeposited film is time and temperature related. The Autodeposition process auophoretic be successfully applied to galvanized substrates.

Withstands nicking and marring for better handling. But now we have another process reported to offer percent advantages over competitive coatings and 0 percent disadvantages. Is not UV stable. The autopnoretic surface of the part requires only cleaning and rinsing to prepare for the chemical reaction to take place; NO electrical charge or pre-coat is required. From beautiful Pine Beach New Jersey: Thanks for the help. The newly deposited organic film is adherent yet quite porous.

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This unusual feature strongly limits carryover of coating chemicals into the rinse tanks and greatly reduces the demand for waste treatment.

Autophoretic® Coating Process

So I am very glad to join this discussion. 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. I’m searching for any independent research about autodeposition coating.

I know that these two processes are not 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 coting.

Second line has just been commissioned for heavy vehicle brake plates. Electrocoat ciating electrodeposition is of course a painting process which is offered by several coatings manufacturers including PPG.

Please contact your local PPG office for procesz paper. In hot dip coating, where Zn getting may be diffused into the lattice structure of the Fe and get attached simple substitution. Typically, film thickness is controlled from 0.

Presently, there are numerous installations in operation, both captive and job-shop, coating a variety of fabricated steel parts for the automotive and general industry markets. Metal surface must be low to medium carbon, cold or hot rolled steel. No tool markers, die, bluing or coil markings. Uniformly coats the inside and outside of tubular shapes, complex assemblies, and narrow crevices. These criteria have been established to ensure the maximum performance on each part.