World-class coating lines deliver a wide range of coating options

Burns Harbor 72-inch hot dip coating line
At Burns Harbor, the 72-inch HDCL uses technologies selected from the best in the world to produce both galvanized and galvannealed sheet suitable for exposed applications in thicknesses of 0.023 inches (0.6 mm) to 0.079 inches (2 mm). Some of these world-class features are:

• Three-stage cleaning, including electrolytic alkaline cleaner and scrubber which, combined with the use of a radiant tube furnace, assures a clean sheet for exceptional surface quality and coating adhesion.
• In-furnace hot bridles provide improved tracking and stable low tension required for interstitial-free steels for deep drawing applications.
• Computerized, closed-loop coating mass control system and nitrogen wiping and shrouding maintain precise coating and mass uniformity.
• Lead-free zinc bath delivers a smooth, spangle-free surface.
• Induction galvannealing provides close control of alloy coatings.

Lackawanna 72-inch hot dip coating line
Hot dip galvanized and galvannealed sheet are also produced at Burns Harbor's Lackawanna, N.Y., facility. Using high-quality hot bands from Burns Harbor, this updated line produces highly formable galvanized and galvannealed sheets from 24 to 72 inches (610 - 1800 mm) wide and from 0.023 to 0.168 inches (0.60 - 4.30 mm) thick. Zero-spangle zinc pot chemistry, computerized closed-loop coating mass control, and an advanced galvannealing furnace ensure high-quality sheet for underbody and structural applications.

Walbridge electroplating/organic coating line
A full range of electrogalvanized products, including pure zinc-coated EG sheet, zinc-nickel coated ZnNi EG sheet, and an organic silicate-coated zinc-nickel ZnNi UC EG sheet are made at Walbridge, Ohio. This modern facility combines an advanced electroplating line using Gravitel technology from ARUS Andritz-Ruthner with a painting facility to allow production of painted electrogalvanized sheet in a single pass. These products include both ZnNi UC EG sheet and painted ZnNi EG for fuel tank applications.

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