The Zinc - 5% Aluminium - Mischmetal alloy coating, commonly referred to as Galfan, represents a specialized protective layer applied to steel wires utilized within the core of overhead conductors. Notably, Mischmetal, an uncommon rare earth element, contributes to the distinctive properties of this coating. Galfan coating synergistically harnesses the anti-corrosion attributes of both zinc and aluminium, yielding a unique combination that bestows exceptional resistance to rusting.
Technical Specifications:
The Zinc - 5% Aluminium - Mischmetal alloy coating, commonly referred to as Galfan, represents a specialized protective layer applied to steel wires utilized within the core of overhead conductors. Notably, Mischmetal, an uncommon rare earth element, contributes to the distinctive properties of this coating. Galfan coating synergistically harnesses the anti-corrosion attributes of both zinc and aluminium, yielding a unique combination that bestows exceptional resistance to rusting.
One of Galfan's defining advantages is its augmented resistance to rusting and enhanced thermal resilience, which stands at least twice that of conventional galvanizing coatings. This elevated resistance translates into a remarkable doubling of the lifespan of Galfan-Coated steel wires in comparison to their galvanized counterparts. As a result, the application of Galfan-Coated steel wires is particularly recommended, especially in environments characterized by pollution and corrosion.
These wires, due to their superior performance and longer lifespan, can play an effective role in reducing maintenance costs of power transmission systems. Given the growing need to improve efficiency and ensure the durability of equipment in the power industry, further research is being conducted on optimizing and expanding the use of alloy coatings such as Galfan, which can lead to further innovations in this field.
In addition to high corrosion resistance, the Galfan coating also offers other advantages over traditional coatings. For example, Galfan is more resistant to abrasion and scratching and has better formability, which allows it to perform better in forming processes such as bending and drawing. Galfan also exhibits greater stability at high temperatures and is less prone to oxidation. These characteristics make Galfan an ideal choice for applications exposed to harsh environmental conditions. Galfan's high corrosion resistance is due to the formation of a dense and stable protective layer on the metal surface. This protective layer is composed of an aluminum-zinc alloy that self-repairs. If this layer is damaged, the aluminum in the alloy quickly reacts with oxygen to form a new protective layer. This self-healing mechanism ensures that Galfan effectively protects the underlying metal in the long term.
In the contemporary landscape, the utilization of Galfan-Coated steel wires has gained prominence, notably in Iran, where these wires are commonly integrated into the core of Aluminium Conductor Steel Supported (ACSS) conductors. This strategic integration underscores the enduring popularity and practicality of Galfan-Coated steel wires, further reinforced by their ability to withstand challenging environmental conditions while significantly extending the operational lifespan of overhead conductors.
Galfan-Coated steel wires, due to their superior performance and longer lifespan, can play a significant role in reducing maintenance costs of power transmission systems. Given the increasing demand for improved efficiency and reliability of equipment in the power industry, further research is being conducted to optimize and expand the use of alloy coatings like Galfan. This ongoing research is expected to lead to more innovations in this field.