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Coated Steel Production

Learn about the different types of coated steels and their production processes, including hot-dipped zinc coating, electrolytic zinc coating, and electro-alloyed aluminum coating. Discover the benefits, applications, and techniques involved in making high-quality coated steel.

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Coated Steel Production

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  1. Coated Steel Production

  2. Hot Dipped Zinc Coated Regular & Minimized Spangle Fully Alloyed Iron Coated Differentially Coated Electrolytic Zinc Coated Hot Dipped Zinc Coated One Side Electrolytic Zinc Coated One Side Electro-Alloyed Aluminum Coated Long Terne Tin Coated Zincrometal Types of Coated Steels

  3. Hot-Dipped Galvanizing Process Welder Cooling Tower Air Knives Leveler Clean Rinse Zinc Pot 800-1200F Heat Chemical Treatment (opt) Preheat

  4. Hot-Dipped Galvanized Aids in Wetting Frosted Spangle Increased Coating Adherence, Passive Layer Zinc Aluminum Oxide Passive Layer Zinc Layer Thickness 0.13 to 1.2 oz/sq ft 0.0002 to 0.0015 in. steel

  5. Spangle Control in Hot-Dipped Galvanizing Air Spray Fine Zn Dust Nucleii 600-800 micro-inches

  6. Delta Alpha Steel Zeta Gamma

  7. Annealing Furnace Annealing Furnace In Line Furnace Galvannealed Hot Dipped Zeta Delta Gamma Thickness Steel Time

  8. Questions?

  9. Electro-Galvanizing Process Zinc Anode Surface Clean 100-200 micro-inch Zinc Sulfate Bath Steel Cathode • Cold Process, no alloying, no change in substrate • Very Smooth Surface Can Also Tin Plate Using Tin Anode and Sodium Stannate Bath

  10. Electro-Alloy • 9%Fe - Zn • 23%Fe - Zn • 30%Fe - Zn • 20%Ni - Zn • 27%Ni - Zn • Electro-Duplex • Multiple Layers • Zn, Zn Alloys, Sn Electro-Coating Variations

  11. Making & Shaping of Steel, USS, 1964

  12. Making & Shaping of Steel, USS, 1964

  13. GALVANIZED STEEL METALLURGY COMPARISON Zinc Steel Zinc Alloy Layer Steel Zeta Delta Gamma Thickness Steel Time

  14. Questions?

  15. Hot Dipped Zinc Coated Rocker panels B posts Wheelhouse outer panels Cowl top panels Luggage compartment floor pans Electrolytic Zinc Coated Window guides Wiper blade frames Radio speaker baskets Head rest supports Typical Applications of Coated Steels • Zincrometal • Doors • Front fenders • Quarter panels

  16. Hot Dipped Zinc Coated One Side Fenders Door outer panels Rear quarter panels Deck opening lower panels Electrolytic Zinc Coated One Side Door outer panel Rear quarter panels Fenders Deck lids Lower back panels Typical Applications of Coated Steels (CONT.)

  17. Homework

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