Coil Coating Process

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.

Galvanizing

Accreditations

AZZ is a proud member of the American Galvanizers Association and many other industry organizations

A proven galvanizing partner with a long history of industry leadership

AZZ has been a member of the American Galvanizing Association since 1991, having earned recognition for excellence in hot-dip galvanizing in a variety of industries and applications including recreation, petrochemical, industrial and agriculture.

Through the AGA, we also develop and present certified continuing education seminars to architects, engineers, detailers, and fabricators. Additional memberships and/or groups we support and participate in:

American Galvanizing Association
American Institute of Architects
American Institute of Steel Constructors
APC/PennDOT
American Road and Transportation Builders Association
Bridge Preservation Partnership
Canadian Institute of Steel Construction
Chemical Coaters Association International
FEMA (Farm Equipment Manufacturers Association)
Intermodal Association of North America
Illinois County Engineers Association
Indiana Fabricators Association
Iowa County Engineers Association
Illinois Road and Transportation Builders Association
NACE International
NATM (National Association of Trailer Manufacturers
NOMMA (National Ornamental and Miscellaneous Metals Association)
NRPA (National Recreation and Parks Association)
Ohio Steel Fabricators Association
OSEA (Oklahoma Structural Engineers Association)
SEAoT (Structural Engineers Association of Texas)
Short Span Steel Bridge Alliance
SSPC (Society for Protective Coatings)
Stadium Managers Association
Structural Steel Institute
SWFA (SW Fabricators Association)
Texas County Engineers Association

Industry accreditation

AZZ can help you earn credit hours for industry accreditation. Contact us to receive detailed information.

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