Coil Coating Process

mil-spec military protective coating, AZZ

Exit End (Recoiler)

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.

Coil Coating Process

Exit Accumulator

Like the Entry Accumulator, the Exit Accumulator adjusts up and down to store metal while the recoiler is unloading a completed coil.

Coil Coating Process

Top Coat

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.

Coil Coating Process

Prime Coat

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.

Coil Coating Process

Cleaning & Pretreating

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.

Coil Coating Process

Entry Accumulator

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.

Coil Coating Process

Entry End

Uncoiler

Metal coils, up to 60,000 pounds, are received and undergo visual inspection before moving to the uncoiler for unwinding.

Coil Stitch

At this stage, previous and next coil ends are mechanically joined, ensuring continuous feed in the coil coating line.

Surface Technologies

Mil-Spec

Protective coatings which meet military specifications and are designed to protect critical equipment from hazardous agents

Protection from radioactive, chemical, and biological agents

AZZ is a leading provider of chemical agent resistant coatings (CARC) meeting military specifications (Mil-Spec) established by the U.S. government. Our high-volume production capacity enables us to meet the fast turnaround times often required by the defense industry, and our capabilities include large format and heavy equipment parts.

CARC-Certified

In the state of Texas, AZZ is one of just a few CARC-certified suppliers. Our CARC is typically formulated from epoxy or polyurethane and rigorously tested to provide the highest level of protection against radioactive, chemical, and biological warfare agents and the corrosive, decontaminating chemicals used to wash down military equipment.

Meeting the demand for quality

Military products require superior corrosion resistance, edge coverage, and protective throw power. E-Coating is ideal to serve these needs with excellent adhesion to a variety of substrates and is a great base for CARC topcoats.

Serviceable military products include:

Vehicles and Cabs
Frame Rails
Wheels
Body Panels

An array of coating and plating specs for the military

If you have a ferrous or non-ferrous substrate, AZZ has a coating system that will meet or exceed your performance expectations. We possess the ability to meet a large variety of coating and plating specifications for the military and defense industries, including but not limited to: