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THE TREATMENT PROCESS

Support for the treatment process is provided throughout every stage by computerized control and management systems. This allows for greater operational flexibility and precision, so as to better meet the needs of a demanding clientèle, and provides additional incentives and motivations for product research and technological advances. Our plant has large yards and is equipped with lift trucks with a capacity of up to 8 tons. This allows for a suitable and rapid flow of materials during loading and unloading, as well as during treatment. If necessary, treated goods can be stored in our storage facility for long periods of time. The movement of goods and materials within our facility is safely performed by overhead travelling cranes with a capacity of up to 15 tons.
Production is divided into two shifts, employing a total of approximately 90 operators who, together with a well-trained and strongly motivated technical staff, are able to offer highly professional and efficient service, from the design stage of the fabricated articles to be galvanized through the final inspection of the finished products. In recent years, hot galvanizing treatment's scope of application has broadened. Today it encompasses a vast range of articles from every sector of the civil and industrial spheres.

 

 

 

Treatment consists of 8 cycles:

 

DEGREASING

2 stations - 200 cubic metres of degreasing solution
Products: Acidic surfactants
Operating temperature: 30C
Integrated mechanical agitation system

PICKLING

14 stations 1200 cubic metres of pickling solution
Products: Hydrochloric acid and corrosion inhibitors
Operating temperature: 20/30C
Integrated mechanical agitation system

 

RINSING

1 station - 100 cubic meters of solution
Products: Water, chlorides and additives
Operating temperature: ambient
Continuous de-ironing treatment

FLUXING

1 station - 100 cubic meters of solution
Products: Zinc Ammonium Chloride with additives
Operating temperature: 35/40C
Patented process with HAl-Ga Technology

PREHEATING

4 postazioni - accumulo automatizzato.
Temperatura di esercizio: 80 >110C
Recupero di calore dal forno di zincatura.

GALVANIZING

1 kettle dimensions of 14,000 x 1,800 x 3,300 mm
Products: SHG zinc 99.995%

no Pb - no Ni
Operating temperature: 443C
Class 1 Bath

Patented HAl-Ga Technology

COOLING

7 stations air drying
1 tank quenching in water
Heat recovery system

PASSIVATION

1 station - 100 cubic metres of passivation solution
5 stations - drying and automatic holding
Products: chromium-free metal salts solution
Operating temperature: ambient

RINSING

The washing of materials after pickling and their continuous de-ironing are very important to obtaining a product that is aesthetically pleasing as well as strong. The residual solution inevitably dragged along with the material coming out of the pickling baths brings with it a small quantity of dissolved iron, which tends to accumulate in the rinsing bath and thus eventually be transferred to the galvanizing kettle. Here, the transferred iron bonds with the zinc and, in some cases, remains suspended in the bath, leading to the formation of floating mattes, which tend to become deposited on the materials in the form of small raised dimples, creating displeasing flaws. The efficiency of the rinsing plant is ensured by monitoring of the solutions through periodic analyses and by the presence of a system for the continuous de-ironing of the solutions, so as to remove the dragged-in iron and thus limit the appearance of aesthetic flaws caused by floating mattes. The rinsing tank has a capacity of 100 cubic metres. It is housed in a hermetically sealed tunnel-style pretreatment unit with a completely automated cycle of operations, equipped with an acid fume capture and abatement system. Materials are automatically immersed in the bath and immersion times are set and recorded over time for every rack.

1 station - 100 cubic meters of solution
Products: Water, chlorides and additives
Operating temperature: ambient
Continuous de-ironing treatment