PRODUCTS AND SERVICES

We offer a wide range of coil coating, and logistical solutions. All our experience at your service.

The coil cutting line features the latest technology in every stage of the production process. It includes a double coating section for the application of the final coating, an additional pre-cleaning section, an advanced waste removal system, and mechanisms that minimise line vibration to ensure high production flexibility and a product with a high-quality and optimum organic finish.

Logistics

We have extensive experience in logistics and we can offer you the best solutions tailored to your needs.

We guarantee our customers reliable deliveries of our coils by using road, train, or maritime transport.

Our products are sold under incoterms 2010.

Process description

The pickling process is basically the removal of scale and iron oxide layers from the surface of hot rolled steel using a diluted hydrochloric acid treatment. The reaction is generally a combination of chemical reaction and mechanical separation of the oxide particles.

The separated particles then react with the acid in the bath, consuming the acid and forming iron chloride. The coil, which is free of surface oxide particles, is considered a “pickled” coil.

The coil is then thoroughly rinsed under water jets. The rinse water is used to optimise water consumption. The rinse in the final stage is carried out with 75 – 85 °C water which allows for quick drying of the steel coil.

Subsequently, the coil passes through a hot air dryer where the hot water film dries quickly.

Finally, the pickled coil is electrostatically greased. The greasing ensures protection against oxidation.

Our pickling line has the most modern acid recycling plant, which reaffirms our strong environmental commitment.

Cold rolling process

Cold rolled steel is produced by a process of mechanically deforming pickled hot rolled coil to reduce the thickness of the steel and make it more suitable for forming. As a result, it improves the surface finish and grants a greater range of applications for the steel.

This is a continuous process that deforms the steel strip as the temperature is kept below the recrystallisation temperature. The change in thickness happens in the directionality of the steel with very little transverse deformation.

For carbon steels processed in reversing mills such as the one in our facilities, we are able to reduce the original thickness by percentages of 30% and higher. The strips are rolled as necessary to achieve the desired thickness.

Value of this process:

The finished product can be sold as Full Hard or Annealed depending on the customer’s needs.

In terms of main characteristics, unannealed Full Hard has low ductility. Annealed, on the other hand, is more suitable for subsequent forming. This last product is produced using a supplementary heat treatment process that enables the steel to regain ductility. After annealing, the steel is lightly rolled (skin-pass) for an optimum finish.

Hot-dip galvanisation process

This is a continuous production process that starts with cold rolled steel coils.

The process begins with unwinding and preparing the steel coil for subsequent treatment in the annealing furnace. In this stage the steel is cleaned and heat treated to prepare the surface for the main process: the application of the zinc coating.

The main stage of production is dipping the steel in the pot of Zinc or Zinc/Magnesium which has been melted at a temperature of approximately 500ºC. Once the coating is applied, the strip enters a cooling process.
To reduce the temperature, the strip passes through the cooling tower where high-pressure air is directly applied. Once cooled, it is skin-passed until achieving a smooth surface.

For the greatest protection, the last stage applies a passivation process and/or oiling, according to customer preferences. The strip is then recoiled to obtain the finished product. An inspection station at the end of the line is critical for continuous quality analysis.

Value of this process:

As a result of the metallurgical bonding between the zinc/magnesium and the steel, a highly adhesive and strong layer is formed that is impact-resistant and highly suited for exterior use, especially in humid or corrosive environments.