The galvanising pot is the core equipment in the hot-dip galvanising process, serving as the vessel that holds molten zinc solution. It enables metal workpieces to acquire a zinc coating by immersion in the zinc bath. The following provides a detailed introduction:

Working Principle: The Zinc Pot operates through the hot-dip galvanising process, immersing steel materials into molten zinc to form a protective zinc coating on their surfaces. This provides corrosion resistance and decorative benefits.

Material Types

Iron Zinc Pots: Typically constructed from low-carbon steel such as AGXG08 or specialised boiler steel, featuring a corrosion-resistant alloy layer. They feature low initial investment, high heating efficiency, and ease of maintenance. However, their service life is relatively short, typically 2 to 5 years, and they carry safety risks associated with molten zinc leakage.

Ceramic zinc pot: More accurately termed a refractory zinc pot, its core consists of a pot body constructed from special refractory materials such as silicon carbide. They boast exceptionally long lifespans exceeding 10 years, minimal zinc consumption and slag production, and high safety reliability. However, they entail high initial investment, slow heating rates, and challenging maintenance.

Other Material Zinc Pots: Options include stainless steel, alloy steel, and titanium alloy zinc pots. Stainless steel pots offer strong corrosion resistance and longevity, suitable for large-scale production lines; Alloy steel zinc pots withstand high temperatures and possess high strength, making them suitable for production lines with stringent temperature control requirements; titanium alloy zinc pots offer corrosion resistance and high-temperature tolerance, but come with extremely high costs and significant processing difficulties, thus being predominantly used in high-end galvanising equipment.

Heating Methods

External Heating: Iron zinc pots commonly employ external heating methods such as gas open-flame heating or electric radiant tube heating, which directly heat the pot walls, resulting in relatively high thermal conduction efficiency.

Internal Heating: Ceramic zinc pots predominantly employ internal heating, where electric heaters or gas burners are immersed directly into the molten zinc, achieving thermal efficiency exceeding 90%.

Dimension Specifications: Zinc pot dimensions must be determined based on workpiece size and production process. The effective length requires a safety margin of 0.5 to 1.5 metres beyond the maximum workpiece length; The effective width must incorporate a safety margin of 0.3 to 0.8 metres beyond the maximum workpiece width or lifting equipment width. Effective depth must account for the maximum workpiece height, zinc immersion depth, dross zone height, and safety margin for liquid level fluctuations.

Application Fields: Galvanising pots are extensively employed across automotive, construction, household appliances, chemical, mechanical, petroleum, metallurgical, light industry, transportation, power generation, aerospace, and marine engineering sectors. They facilitate hot-dip galvanising of metallic materials including steel plates, steel strips, steel wire, and steel pipes.