Product Overview

The Annular Type Layout Batch Hot Dip Galvanizing (HDG) Line represents the pinnacle of space-saving and high-automation engineering in the surface treatment industry. By arranging the process tanks and zinc kettle in a closed circular loop, the line allows workpieces to travel continuously along a single overhead track. This design eliminated the need for long, expansive workshop bays, making it perfect for square-shaped factories or upgrading existing plants with limited spatial freedom.

Key Technical Advantages

• Ultra-Compact Footprint: The circular loop design compresses the layout, saving up to 30%-40% of workshop area compared to traditional linear lines.

• Centralized Loading & Unloading: Input and output occur in the same or adjacent stations, reducing manpower, simplifying forklift/logistics management, and accelerating turnover.

• High-Speed Automated Cycle: Powered by a synchronized, PLC-controlled circular overhead crane system, providing precise dipping times and maximum throughput with minimal manual intervention.

• Advanced Environmental Enclosure: The compact, localized nature of the annular design allows for highly efficient, tightly sealed suction hoods, ensuring 99.9% containment of acid mist and zinc fumes.

  
  

Process Flow (Circular Loop)

Centralized Loading → Pre-treatment Loop (Degreasing → Pickling → Fluxing) → Drying → HDG (Zinc Kettle dipping via circular crane) → Cooling & Passivation → Centralized Unloading & Packing

Technical Specifications 

Smart Control & Energy Efficiency

• Smart Logistics Recipe System: The central control system tracks each rack via RFID/Barcode, automatically adjusting the dipping curve and time in the zinc kettle based on the specific workpiece recipes.

• Optimized Heat Recovery: The circular arrangement shortens the distance between the zinc furnace and the drying room, minimizing thermal radiation loss and maximizing waste heat utilization efficiency.

  
  

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