AUTOPHORETIC COATING PROCESS PDF
March 25, 2020 | by admin
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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Autophoretic® Coating Process
I know that these two processes are not the same. All information presented is for general reference and does not represent a professional opinion nor the policy of an author’s employer.
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 autolhoretic the actual service conditions.
Metal surface must be low to medium carbon, cold or hot rolled steel. If the condition of the received materials deviates from the above stated criteria, performance suffers significantly.
Pencil hardness of 6H to 7H. Considerably lower temperatures are required to cure the autodeposited parts. The coating thickness of the autodeposited film is time and temperature related. Of course, that doesn’t mean that ALL parts will chip and rust! The newly deposited organic film is adherent yet quite porous.
High corrosion resistance Generally hrs. 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.
But in case of electrocoating, the surface atom of the lattice may form bond with foreign atoms. 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 autoohoretic the film increases in thickness.
Description of Autophoretic®
So, if you want to replace paint, it may be a great fit. This unusual feature strongly limits carryover of coating chemicals into the rinse tanks and greatly reduces the demand for waste treatment.
From beautiful Pine Beach New Jersey: The line would most likely only be able to process zinc substrates and not plain steel at the same time. The chemical reaction continues in the second layer, which results in film deposition and increased film thickness instead of solids loss to dragout.
Autophoretjc have two lines running with ACC. But now we have another ;rocess reported to offer percent advantages over competitive coatings and 0 percent disadvantages.
Coats evenly on all surfaces; where it flows it coats with no runs or xutophoretic. Uniformly coats the inside and outside of tubular shapes, complex assemblies, and narrow crevices. If not, I’m not so sure that this work would have legitimate scholarly value: No compounds or lubricants containing animal fat, paraffin, detergents or silicate ingredients.
I’m searching for any independent research about autodeposition coating. This process has been in commercial use since Not compatible with proccess or galvanized material.
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. These criteria have been established to autophroetic the maximum performance on each part.
The metal 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. It’s not possible to diagnose a finishing problem or the hazards of an operation via these pages.
This allows the chemical activators to diffuse rapidly in the film and etch the surface of the metal. Since this process cotaing 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 procss i. 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.
Autophoretic Aquence Industrial Coating Plating Steel Surface Protection Zinc Alternative
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. 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. Second line has just been commissioned for heavy vehicle brake plates.
Has anyone experience with this coating on galvanized zinc surface? I have developed, researched, and produced autodeposition coatings, and lead this coatings to be applied in some automobile factories for many years.
The continuous formation of coating provides a film with a high degree porcess surface protection and corrosion resistance. If you try our search engine, I’m sure you can find some more.
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. Well, you have to remember that it is aautophoretic organic coating, not a metallurgically bonded electroplating.