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.
American Galvanizers Association Excellence Awards: Protective Stadium – UAB Blazers (Recreation & Entertainment Category)
"AZZ Galvanizing - Crowley" provided corrosion protection for the centerpiece of Birmingham's entertainment district - and earned a 2022 AGA Excellence Award in the process.
The City of Birmingham and the University of Alabama at Birmingham (UAB) have had discussions for 35 years on how to replace Legion Field (UAB’s home field since 1927), which lacks the amenities of modern sports venues and is a maintenance drag because of its age. It took decades for the stadium to take shape, with ideas ranging from an on-campus open-air venue to a domed stadium to attract a professional franchise. Finally, UAB, along with local governments, the area civic center authority and Birmingham-based Protective Life Corporation designed and built an outdoor stadium in downtown Birmingham.
As part of the Birmingham Jefferson Convention Complex, the 45,000-seat venue will be the new home for the UAB Blazers football team, as well as host the Birmingham Bowl, high school football championships, concerts and The World Games opening and closing ceremonies in 2022.
The $200 million civic infrastructure investment must live up to the hype and be able to preserve its beauty and stature for decades to come. Therefore, the design team called on the reliable corrosion protection system: hot-dip galvanized steel. The fabricator has years of experience with hot-dip galvanized coatings on high profile projects such as the Texas Motor Speedway and Daytona Speedway. In fact, the fabricator’s preference for corrosion protection is a hot-dip galvanized coating due to its maintenance and corrosion-free life expectancy.
The general contractor broke ground in January 2020, just before the world changed. It was imperative to have the stadium completed by October 2nd for the first home game of the UAB 2021 football season. The COVID-19 pandemic nor weather delays could stand in the way of the budgeted completion dates. Fortunately, hot-dip galvanizing can be completed in all-weather situations, 24 hours a day, 7 days a week.
Additionally, hot-dip galvanizing was deemed an essential industry and AZZ did not experience downtime during the pandemic; while the impacts of COVID-19 were being felt in all aspects of work and live, the steel fabrication and hot-dip galvanizing of 400 tons of steel was able to remain on schedule and within the budgeted time of completion.
Protective Stadium is the centerpiece for the new entertainment district of downtown Birmingham, Alabama. The hot-dip galvanized, aesthetically pleasing venue will be highly visible to all downtown visitors, student and tourists, promoting hot-dip galvanizing as the coating preference for all outdoor venues for future generations.
Each year, the American Galvanizers Association honors projects that showcase the versatility and long-term value of hot-dip galvanizing. Spanning a wide number of industries, the Excellence Awards highlight how galvanizing contributes to durable, low-maintenance solutions that stand the test of time.
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