Finishing

Aluminium profile finishing

For more than four decades, Constellium has been transforming semi-finished products into prefabricated components.

Aluminium anodizing

Our plant in Nuits-Saint-Georges (France) has three anodizing lines capable of treating profiles of up to 8.4 meters long.

Anodizing is a specific surface treatment for aluminium whereby an electrolytic process is used to create a uniform and resistant surface layer of aluminium oxide. This coating gives a very attractive satin finish to the product and can be performed with an optional coloring process.

The complex anodizing process involves a series of soaking tanks and successive rinsing processes. It consists of four main process steps: 

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    Surface preparation
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    Forming of a coating of anhydrous alumina
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    An optional coloring process
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    Final sealing of the anodic layer

Our anodizing process complies with the Qualanod quality standards for anodic oxide coatings. Our anodizing lines are capable of treating profiles up to 7 meters long.

Aluminium machining services

CNC-Bearbeitung

In addition to extrusion and surface treatment operations, our machining workshops and network of sub-contractors offer a wide variety of finishing services.

By delivering parts that are in an advanced stage of finishing or ready-to-use parts, we help customers optimize their own production processes and cycle times.

Finishing expertise

Constellium’s soft alloys plants in Germany offer expertise in finishing. These include:

profil-coupure-th-2_medium

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    Mechanical processing on computer numerical controlled (CNC) machining centers
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    Drilling, milling and sampling
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    Bending (up to a profile length of 15 meters)
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    Thermal break
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    Surface finishing (anodizing and powder-coating)

Other options are available on request, provided either in-house or with long-standing and experienced local partners.

Key-fact

In addition to manufacturing extrusions, Constellium’s soft alloys plants have more than 40 years’ experience in transforming semi-finished products into prefabricated components.

Last update 16 September 2014