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arc wire

Arc wire - Arc spraying

Arc wire technology, or arc spraying, differs from classic metallization with flame wire system for the way in which the wire used for coating is brought to an advanced plastic state. In the arc wire system thermal energy is obtained from an electric arc

generated by the contact of two wires having different voltages. Wires, made up of coating material, melt instantly. A jet of compressed air duly conveyed inside a hood accelerates the molten metal particles projecting them on to the workpiece to be coated.

Tsa coating

Salt spray fog


Marine corrosion

Cold zinking

Dimensional restorations

This technology is suitable to all those works in which large surfaces have to be coated in a fast, productive and qualitatively optimal manner. Furthermore, the arc wire system can be easily integrated with automated spraying systems.

Avoiding corrosion exploiting aluminium passivation properties

One of the main applications of the arc spraying technique refers to the anticorrosive field as a prevention from the oxidation of metals. To avoid this phenomenon, the strong passivating properties of materials such as zinc, aluminum, bronze or copper are exploited. The passivation of aluminum is the most requested in a saline environment, the components to be protected, after being properly cleaned and sandblasted, are coated with a layer of a few tenths of millimeter of aluminum. At this point it is possible to progress to the spray-painting/sealing step aimed at plugging the microporosities of the coating and therefore significantly improving its antioxidant properties.

In carpentry the most requested coating with arc wire technique is instead the zinc-based one. Zinc guarantees great protection from oxidation in the atmosphere, combined with low execution costs and excellent return in terms of production. Also this coating can be spray-painted/sealed and, taking special care, very particular aesthetic results can be obtained, such as the antiqued or the burnished effect.

Using this technology it is also possible to combine two wires of different nature thus creating singular coatings made of alloys not available on the market.


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