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 unusual feature strongly limits carryover of coating chemicals into the rinse tanks and greatly reduces the demand for waste treatment. If you try our search engine, I’m sure you can find some more. The coating thickness of the autodeposited film is time and temperature related.
No tool markers, die, bluing or coil markings. I have developed, researched, and produced autodeposition coatings, and lead this coatings to be applied in some automobile factories for many years.
This allows the coating dispersion to flow into and around the most complex shapes. We have two lines running with ACC. The bath viscosity is close to that of water with little or no organic solvents in the coating bath. Metal surface must be low to medium carbon, cold or hot rolled steel. 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.
Free from carbon enbrittlement. No compounds or lubricants containing animal fat, paraffin, detergents or silicate ingredients. From beautiful Pine Beach New Jersey: This diffusion control leads to a uniform coating thickness on complex shapes and in recessed areas. High corrosion resistance Generally hrs.
Pencil hardness of 6H to 7H. This is a revolutionary way to meet higher performance and corrosion resistance standards at a competitive price. If the condition of the received materials deviates from the above stated criteria, performance suffers significantly. These criteria have been established to ensure the maximum performance on each part.
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 elimination of these stages leads to considerable savings in required floor autophoretuc, energy, and operating costs, as well as the total elimination of toxic metals from the process.
Autophoretic Aquence Industrial Coating Plating Steel Surface Protection Zinc Alternative
Typically, film thickness is controlled from 0. The newly deposited organic film is adherent yet quite porous. Thanks for the help. This allows the chemical activators to diffuse rapidly in the film and etch the surface of the metal.
The continuous formation of coating provides a film with a high degree of surface protection and corrosion resistance. So, if you want to replace paint, it may be a great fit. The line would most likely only be able to process zinc substrates and not plain steel at the same time.
Coating may be bent back on itself with no cracking or peeling. 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. Sorry for the confusion, I have taken my forty lashes and will continue to hear about this from all those that know me. Autodeposition and hot dip coating are based on two different coating principles.
Autophoretic® Coating Process
But now we have another process reported to offer percent advantages over competitive coatings and 0 percent disadvantages. Of course, that doesn’t mean that ALL parts will chip and rust! Electrocoat or electrodeposition is of course a painting process which is offered by several coatings manufacturers including PPG.
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.
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. One through electric circuit another without. So I am very glad to join this discussion.
Description of Autophoretic®
However it is not with typical bath chemistry and requires some additional considerations due to the build up of zinc in coating bath. Initially, the deposition process is quite rapid, but slows down as the film increases in thickness. Latex films form by coalescence. Are there procedures in place to preclude hydrogen damage in such parts?
Unlike coating processes that require a charge to deposit the coating i. The chemical reaction continues in the second layer, which results in film deposition and increased film thickness instead of solids loss to dragout. But in case of electrocoating, the surface atom of the lattice may form bond with foreign atoms. 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.
Is not UV stable.
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. Since its inception, this unique process has been employed to coat billions of square feet of surface. Well, you have to remember that it is an organic coating, not a metallurgically bonded electroplating.