Once the metal is cleaned, treated, and painted, the strip is rewound into a coil size prescribed by the customer. From there, the coil is removed from the line and packaged for shipment or additional processing.
After the primer is applied and cured, then the metal strip enters the finish coat station where a topcoat is applied. Topcoats provide color, corrosion resistance, durability, flexibility and any other required physical properties. Like primers, the topcoat is cured using thermal cure ovens.
Oven
Coil coating ovens can range from 130 feet to 160 feet and will cure the coatings in 13 to 20 seconds.
During this stage, the strip enters the prime coat station whereby a primer is applied to the clean and treated metal. After the primer is applied, the metal strip travels through a thermal oven for curing. Primers are used to aid in paint adhesion, improve corrosion performance and enhance aesthetic and functional attributes of the topcoat.
S Wrap Coater
The S wrap coater design allows for primers and paints to be applied to the top and back side of the metal strip simultaneously in one continuous pass.
The cleaning and pretreating section of the coil coating process focuses on preparing the metal for painting. During the cleaning stage, dirt, debris, and oils are removed from the metal strip. From there, the metal enters the pretreatment section and/or a chemical coater whereby chemicals are applied to facilitate paint adhesion and enhance corrosion resistance.
Dried-In-Place
In this stage a chemical that provides enhanced corrosion performance is applied. This treatment can be chrome free if required.
The accumulator is a structure that adjusts up and down to store material, which makes continuous operation of the coil coating process possible. This accumulation will continue to feed the coil coating processes while the entry end has stopped for the stitching process. As much as 750 feet of metal can be collected.
"AZZ Galvanizing - Nashville" played a vital role in the construction of a monument built to welcome thousands of daily visitors to the Music City.
In a city full of iconic landmarks, the Nashville International Airport adds to this list with the erection of an epic 40+ Ft. monument welcoming the 50,000 travelers who use this airport each day.
The monument displays Nashville’s three letter airport code, BNA (Berry Field Nashville) named for the airport’s first administrator Col Harry S Berry.
“As we celebrate a record-breaking fiscal year in 2022 with 18.4 million passengers, it’s important to have a front entrance that commands attention and welcomes our passengers every day,” said Doug Kreulen, president and CEO of BNA.
The monument will be lit at sunset every day, illuminating the entrance and shining bright with familiar blue and yellow brand colors.
The project was built on a hot-dip galvanized steel frame designed for a long life even while being exposed to the elements. Each of the 14’ tall letters on the frame were designed to be single-dip galvanized before being adorned with decorative steel panels. Hollow fabrications require small openings to ensure that all surfaces (internal and external) receive equal corrosion protection.
For this project the openings were precisely sized and located to help minimize drips and runs, thus producing a smooth, consistent HDG surface, essential for an aesthetically pleasing finish. The monument will be lit at sunset every day, illuminating the entrance to BNA with familiar the blue and yellow brand colors. On the back side of the monument, hinged access panels were installed to reach the internal components for inspections and repairs as needed.
In addition to the entrance monument, the airport plans to install smaller versions of the sign at other locations on the property. Thanks to the design team’s emphasis on the longevity and sustainability, hot-dip galvanizing was the optimum, maintenance free choice to protect this welcoming structure for decades to come.
Hot-dip galvanizing is a trusted solution for long-lasting corrosion protection, relied upon for its durability and unmatched performance. This video provides a step-by-step look at the galvanizing process, showcasing how steel is transformed with a protective zinc coating that stands up to the toughest conditions. From surface preparation to the final finish, see how this process ensures strength and longevity for projects of all sizes.
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