PROCESSES
HIGH TECHNOLOGICAL LEVEL


Our steel and aluminum undergo a series of high-tech processes at our service centers. While always adhering to the highest standards, these techniques allow our materials to be tailor-made to our clients’ needs.

Corte de silueta

Silhouette cutting

These cutting lines have been designed to respond to the need for processing specific, irregular shapes for each car model. These shapes are obtained through the use of dies supplied by our clients an...

These cutting lines have been designed to respond to the need for processing specific, irregular shapes for each car model. These shapes are obtained through the use of dies supplied by our clients and assembled in our presses.

Corte longitudinal

Longitudinal cutting

In these lines, coils of certain width are cut in order to obtain coils with lower width (strips).  The width of these rolls or coils is determined by the position of the blades that do the cutting, ...

In these lines, coils of certain width are cut in order to obtain coils with lower width (strips).  The width of these rolls or coils is determined by the position of the blades that do the cutting, and will remain to be uniform at all times and along their entire length.

Corte transversal

Transversal cutting

In these cutting lines, the coils become flat rectangular plates stacked in packages. To achieve this, coils are flattened, cut to the desired shape and stacked in packages for easy handling and trans...

In these cutting lines, the coils become flat rectangular plates stacked in packages. To achieve this, coils are flattened, cut to the desired shape and stacked in packages for easy handling and transportation.

Corte trapecios

Trapezoidal cutting

It is in these lines where flat formats stacked in packages are obtained. They differ from the transversal cutting in the cutting method, as in this case the tools used are oscillating and rotating, o...

It is in these lines where flat formats stacked in packages are obtained. They differ from the transversal cutting in the cutting method, as in this case the tools used are oscillating and rotating, or roto-oscillating shears which may vary the cutting angle.

decapado

Pickling

The purpose of the pickling process is to remove the metal oxi-de film on the steel surface. As the oxidized metal enters an aqueous solution of inorganic or hydrochloric acid, the oxide on the steel ...

The purpose of the pickling process is to remove the metal oxi-de film on the steel surface. As the oxidized metal enters an aqueous solution of inorganic or hydrochloric acid, the oxide on the steel surface are remo-ved; the steel is later washed with demineralised water and dried using hot air. Next, based on the customer’s needs, the coil may be introdu-ced in the electrostatic oiler, which provides an oil cover that may be light, medium or heavy, in order to prevent oxidation during the handling and transportation.

Galvanizado en continuo

Continuous galvanizing process

To galvanize means to cover the surface of steel coils with mel-ted zinc, with the aim of protecting them against corrosion. Zinc is the most widely used metal coating, due to its steel protec-tion pr...

To galvanize means to cover the surface of steel coils with mel-ted zinc, with the aim of protecting them against corrosion. Zinc is the most widely used metal coating, due to its steel protec-tion properties. The coating of the coil is carried out by continuous dipping of the band in a high temperature zinc pot so that the piece is covered on both sides. Our galvanizing lines are fitted with physical and chemical treatment systems in order to ensure maximum cleanliness and perfect coating adherence.

Galvanizado por inmersión

Dip-in galvanization

The process consists of hot dipping the parts. The already pro-cessed steel parts are dipped in a pot containing the zinc mel-ted at 450ºC.

Electrocincado

Electrogalvanising

Through a continuous electrolytic process, the coil band is coa-ted with zinc on one or both of its sides, by means of electrical current. The surface finish comprises a no-rinse application, oi-ling ...

Through a continuous electrolytic process, the coil band is coa-ted with zinc on one or both of its sides, by means of electrical current. The surface finish comprises a no-rinse application, oi-ling and passivation. Therefore, the zinc-coated electro-galvanised band enjoys a cathodic protection that is corrosion resistant and provides a surface finish and unique paintability, along with excellent adaptability and weldability.

Laminado

Cold Rolling

By means of this process, the thickness of the coil band is cold-reduced; at the same time, its resistance and toughness properties, and the micro-structure of steel, become modified. The process feat...

By means of this process, the thickness of the coil band is cold-reduced; at the same time, its resistance and toughness properties, and the micro-structure of steel, become modified. The process features automatic functions, including speed ad-justment and thickness control, which allow great accuracy in the whole calibre range. Resulting from micro-structural modification, it is necessary to carry out the annealing process, in order to restore the band’s malleability and ductility properties, once modified by the cold reduction.

Skinpass

Skinpass

This process is used for improving the range and quality of the manufactured products, obtaining the required surface rou-ghness and quality and the goods’ metallurgic modification, achieving the su...

This process is used for improving the range and quality of the manufactured products, obtaining the required surface rou-ghness and quality and the goods’ metallurgic modification, achieving the subsequent homogenisation of the crystalline grain and the surface finishing, and ensuring the dimensional tolerance of the thickness.

Desengrase

Degreasing and pre-painting process

The process for degreasing coils aims at eliminating the oils on the band surface through 4 steps: a first stage based on high pressure washing, two stages for alkaline degreasing, and one rinsing sta...

The process for degreasing coils aims at eliminating the oils on the band surface through 4 steps: a first stage based on high pressure washing, two stages for alkaline degreasing, and one rinsing stage, which may be used as final treatment, or for pre-paration of the material which is to be pre-painted, and that takes place subsequently to the degreasing process. Two large groups may be distinguished within the pre-painting process: Ferroprot: organic – non organic coating, developed for pro-tection of steel and coated steel. Back-Caot: a film-forming, water soluble treatment, which provides excellent compatibility with epoxy-polyester pri-ming, increasing protection at the edges.

Plastificado

PVC-coating

This is a continuous process that involves application of heat and pressure, giving rise to a product that brings together the resistance and forming of the base plate and the anti-corrosive power of ...

This is a continuous process that involves application of heat and pressure, giving rise to a product that brings together the resistance and forming of the base plate and the anti-corrosive power of PVC, and that is applicable to any type of use that may require such features and that, additionally, need to have an aesthetic, decorative finish. This treatment allows all mechanical processes that may be carried out on steel, and may be assembled through any me-chanical system, riveting, bolting, screw fitting, stapling, clip-ping, etc. On the other hand, it is an excellent support for screen printing and a great paint base. 

Tubos

Tubes

These are lines designed for production of a wide range of tubes and welded tubular profiles, and are supplemented with two cut-to-size centres and a machining section, which enables us to offer the p...

These are lines designed for production of a wide range of tubes and welded tubular profiles, and are supplemented with two cut-to-size centres and a machining section, which enables us to offer the possibility of manufacturing special tubes both in terms of size and finishing.

Chapa perfilada

Roll Forming

These lines are used for production of a wide range of tubes and welded tubular profiles, and are supplemented with two cutting centres.

Corte por plasma

Laser-plasma cutting

This procedure is based on the thermal and mechanic action of a gas stream heated with a direct current electric bow located between an electrode placed on the torch and the workpiece. The plasma jet ...

This procedure is based on the thermal and mechanic action of a gas stream heated with a direct current electric bow located between an electrode placed on the torch and the workpiece. The plasma jet drills through the part, melting and expelling the material, therefore achieving more accuracy and cleanliness in the cutting area. This is a complementary process for special tasks, such as producing small series and achieving close tolerances or improved finishes.

Láser 3D

Before the hot stamping process, the blanks for the components are cut from coiled material—an aluminum-silicon (AlSi)-coated boron steel with initial yield strength of 500MPa. In the first part of ...

Before the hot stamping process, the blanks for the components are cut from coiled material—an aluminum-silicon (AlSi)-coated boron steel with initial yield strength of 500MPa. In the first part of the heating process, the blanks then are heated to approximately 1200°F to allow the AlSi coating to bond to the boron steel base. In the second part, they are further heated to approximately 1740°F. The bright-red glowing parts are placed in the press dies, followed by forming and quenching within the die. Within a short period of time, the parts are cooled to about 400°F using rapid controlling. The result is an austenitic grain structure, which gives the parts a yield strength of around 1500MPa. While the process is often referred to as hot forming, the description of press hardening is actually more precise, as the entire process is a heat treatment. The forming alone could be done without the parts being heated. With the parts formed, they need to be trimmed into their final shape and openings or holes need to be added. The high strength of the parts requires a different method than commonly used on other stamped sheet-metal parts. Trimming die material is not hard enough to allow its use for trimming or cutting hot-stamped parts. Even if this process could be used, it would still pose risks like deformation of the edges and micro-cracking due to the high forces involved. In addition, the cost of those tools would be too high to be economically viable, as they would require repair or replacement within several hundred hits. The downtime for the tooling changeover and its associated cost further reduce the usefulness of this process. The solid-state laser—with a wavelength of approximately 1μm—has been proven to be the best solution. When used as a cutting tool, the laser's high-energy beam melts the material and a high-pressure processing gas blows the molten material away from the cut.

Welding

A tailored blank is a sheet of steel that combines several grades and / or various thicknesses and / or different coatings, the different parts being laser welded together, in order t...

A tailored blank is a sheet of steel that combines several grades and / or various thicknesses and / or different coatings, the different parts being laser welded together, in order to place the best material at the best place in the right thickness for a real “tailor-made” solution for the customer after stamping. Tailored blanks are nowadays especially in use in the automotive construction, for the body in white and the closures of a car. The welding of steel grades for the direct hot stamping like Usibor® 1500P and Ductibor® 500 require a dedicated welding process. This process includes a previous partial ablation of the weld edges, in order to remove the AlSi coating before the welding operation Butt laser welding without ablation or with inappropriate ablation leads to mix of coating material (Aluminium) into the molten steel and may drive eventually to fracture of the assembly.

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