When in close proximity to steel, a coating with a high concentration of zinc dust is known as a zinc rich coating. Zinc Rich Coating are applied to steel surfaces to prevent corrosion and extend their lifespan. Similar to cold galvanizing, zinc-rich coatings protect metals from cathodic corrosion.
Zinc rich coatings are utilized by numerous enterprises to shield steel substrates from consumption. Industrial, automotive, and highway infrastructure applications all make use of them.
Zinc Rich Coating While regular paints protect by creating an impermeable barrier between the metal and moisture from the environment, zinc rich coatings provide cathodic protection. Steel is protected by the cathodic cell, but zinc is not. Additionally, zinc coatings offer the surface some barrier protection.
Although a zinc-rich coating can be applied on its own, it is typically overlaid with paint or epoxy. Under a top coat of epoxy or urethane paint, this primer serves as a backup or additional method of protecting the steel from corrosion.
Coatings made of zinc come in two varieties:
- Inorganic: Coatings made of inorganic zinc must be applied by spraying. When not coated with a top coat, inorganic zinc coatings protect steel better than organic zinc coatings that are not coated with a top coat.
- Natural: Coatings made of organic zinc are typically applied with a brush, roller, or spray. They are not as protective of the steel as an inorganic primer if a top coat is not applied. When top-coated, organic zinc coatings offer the same level of protection as inorganic coatings. Organic zinc coatings can be applied to a surface as a moisture-cured urethane zinc primer.
Zinc-rich paints Zinc-rich paints have a high concentration of active anti-corrosion zinc metal pigments (85%–92%). Paint of this kind forms a metallic zinc film that not only serves as a physical barrier but also protects the steel underneath from cathodic corrosion.
It has been established that zinc-rich paints are the most efficient paint systems for preventing corrosion. The thickness of these zinc primers when applied can range anywhere from 6 to 125 microns. The anti-corrosion protection's durability will be directly proportional to its thickness and zinc content.
Zinc powder paints are mostly used to protect industrial structures like steel infrastructure, pipelines, bridges, windmills, offshore rigs, the petrochemical and power industries, and so on. and the coating that prevents corrosion for use in marine applications (such as sea containers, ship construction and upkeep, and marine equipment).
Zinc oxide (ZnO) was one of the main white pigments used in paint for a long time. Even though other materials are mostly used for this, zinc oxide is still a very important part of paint because of other important properties like protecting against mildew, UV light, hiding power, and neutralizing acids that are made when paint oxidizes. Mechanical Plating Zinc Metal Pigments (ZMP) are extensively used in mechanical plating and galvanizing, whereby small steel parts (screws, fasteners, rivets, bolts, etc.) are protected from corrosion and found in anti-fouling paints for ships. are sprayed with a thin, uniform layer of zinc, which prevents hydrogen embrittlement from forming and enhances corrosion resistance.
A process known as sherardizing involves coating small pieces of steel with zinc. Similar to Mechanical Plating, the application is carried out at higher temperatures (380-450° C).
Products Fine Zinc Powder With a production capacity of 100.000 tons per year, we developed three distinct production processes—Atomization, Larvik, and Muffle—that enable us to offer the broadest selection of products. We are the global market leader for Fine Zinc Powder—formerly known as zinc dust.
Zinc oxide produced through an American direct or reduction-oxidation process is known as EPM. The end product is zinc oxide of high quality with low levels of lead and cadmium, which is especially important for industrial applications.
Zinc oxide produced by EPM-E, a direct or American process, is produced through a reduction-oxidation process that is followed by a special treatment that produces zinc oxide of high quality. EPM-E has a particular fineness and a low level of impurities.
In Nashik, India, we rank among the top producers and suppliers of zinc rich coating. Protexion LLP supplies and applies high-performance coatings for high-end engineering applications. By offering "Techno-Commercial" benefits, each product stands out on its own and adds value.
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