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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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 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.
However it is not with typical bath chemistry and requires some additional considerations due to the build up of zinc in coating bath. I’m searching for any independent research about autodeposition coating. If the condition of the received materials deviates from the above stated criteria, performance suffers significantly. Coats evenly on all surfaces; where it flows it coats with no runs or sags. 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.
The continuous formation of coating provides a film with a high degree of surface protection and corrosion resistance. Has anyone experience with this coating on galvanized zinc surface? Metal surface must be low to medium carbon, cold or hot rolled steel. Not compatible with aluminum or galvanized material.
Autophoretic Coating Plants, Autophoretic Coating Plant, Manufacturer, India
Thanks for the help. We have two lines running with ACC.
Well, proces have to remember that it is an organic coating, not a metallurgically bonded electroplating. I just read what I wrote above and I am not sure why I said what I did. We looked at it for replacing some heavy zinc plating on couplings and had to dismiss it because the parts are handled very roughly and will chip and rust. Depends on solvent, time, and temperature.
Sorry for the confusion, I have taken my forty lashes and will continue to hear about this from all those that know me. So I am very glad to join this discussion. Is not UV stable.
Autodeposition and hot dip coating are based on two different coating principles. The bath viscosity is close to that of water with little or no organic solvents in the coating bath.
This process has been in commercial use since Initially, the deposition process is prodess rapid, but slows down as the film increases in thickness.
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. Pencil hardness of 6H to 7H. Of course, that doesn’t mean that ALL parts will chip and rust! All information presented is for general reference and does not represent a professional opinion nor the policy of an author’s employer.
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. 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 procesw processes i.
If you try our search engine, I’m sure you can find some more.
The newly deposited organic film is adherent uatophoretic quite porous. These ions interact with the latex in solution causing coating deposition on the surface of the steel parts.
Withstands nicking and marring for better handling. In both cases metallic bond is getting formed, but the bonding nature may not be same. So, if you want to replace paint, it may be a great fit.
Description of Autophoretic®
Autoophoretic now we have another process reported to offer percent advantages over competitive coatings and 0 percent disadvantages. One through electric circuit another without.
Are there procedures in place to preclude hydrogen damage in such parts? This unusual feature strongly limits carryover of coating chemicals into the rinse tanks and greatly reduces the demand for waste treatment. The coating thickness of the autodeposited film is time and temperature related. These criteria have been established to ensure the maximum performance on each part.
Autophoretic® Coating Process
High corrosion resistance Generally hrs. I know that these two processes are not the same. This allows the coating dispersion to flow into and around the most complex shapes. Please contact your local PPG office for that paper.
If not, I’m not so sure that this work would have legitimate scholarly value: This diffusion control leads to procss uniform coating thickness on complex shapes and in recessed areas. Considerably lower temperatures are required to cure the autodeposited parts. Latex films form by coalescence. This allows the chemical activators to diffuse rapidly in the film and etch the surface of the metal.