⛓️ An Unbreakable Chemical Bond
Unlike cold galvanic processes, hot-dip galvanizing occurs through the total immersion of the product in a bath of molten zinc (at a temperature of approximately 450°C).
This process does not just “deposit” material on the surface; it triggers a metallurgical reaction that creates a genuine chemical bond between the steel substrate and the coating. The result is a series of zinc-iron alloy layers that are extremely resistant and integrated into the part.
🛡️ Maximum Durability: The Thickness That Makes the Difference
Among all anti-corrosion treatments for steel, hot-dip galvanizing is the one that guarantees the greatest protective thickness. This characteristic makes it the top choice for infrastructure, heavy structural work, and products constantly exposed to the elements.
A Critical Factor: Threads and Tolerances
Precisely because of the significant thickness of the coating, design requires special attention, especially for threaded elements:
- Dimensional variation: The zinc layer can significantly affect coupling tolerances.
- Specific design: During the technical drawing phase, it is essential to provide the correct clearances to ensure that nuts and bolts mate perfectly even after treatment.
📐 Versatility in Shape and Size
Modern immersion and centrifugation technologies make hot-dip galvanizing extremely versatile. It is possible to protect products of the most varied shapes and significant sizes, ensuring uniform coverage even in the most hidden corners or inside tubular structures.
📞 Does Your Product Need to Stand the Test of Time Outdoors?
Hot-dip galvanizing is the ultimate barrier against atmospheric agents.
Zarri supports you right from the design phase to correctly manage the tolerances of threaded elements, ensuring a final product that is 100% protected and ready for installation.
➡️ Ask our experts how to design your components for hot-dip galvanizing