Extrusion

Complex shapes, precise results – we are your partner for extrusion.

As a manufacturer, we produce extrusion profiles that are precisely tailored to your individual needs. To do this, we rely on innovative and fully automated process technology to keep the carbon footprint low during distribution.

Extrusion services

Your advantage: We can respond quickly to your requests and produce and deliver your custom-fit aluminum extrusion profiles on schedule. We can meet your requirements from 5” 8MN up to 10”40MN machine sizes.

Alloys for aluminum profiles We offer a wide range of different aluminum alloys for this purpose:

Alloys
  • EN AW 6060
  • EN AW 6063
  • EN AW 6005A
  • EN AW 6082

Passion for the fascinating process of extrusion

Alunet extrusion process round aluminium billets – an extremely versatile material -into customer-specific profiles. This complex method is known as extrusion. The basis is the extrusion billet made of the specific aluminium alloy required. The billets delivered to our facilities by certified suppliers. The extrusion billet can measure up to 254 millimetres in diameter and is the input material which is then extruded. To prepare it for extrusion the billet is pre-heated to a temperature of up to 500 degrees Celsius. This is an important step which is necessary before converting in the extrusion press.

Next the billet is pressed at high pressure up to 300 bar through the die, also known as the extrusion press tool. This gives the material the profile geometry specified by the customer. 

In the next stage the profile lengths are stretched to remove any tension and to straighten them. They are then cut to customer-specific lengths of up to 25 metres. This is followed by heat treatment (curing) in special ovens. Next up is further fabrication of the extrusions to produce aluminium profiles to meet customer specifications.

Technical know-how in extrusion

Alunet is your technological partner for high-quality extruded products that meet the highest requirements in terms of alloy properties, tolerances and surfaces.

In addition to a wide range of standard materials, we also develop and process customer-specific atelloys. Especially in the field of crash alloys, we work with renowned OEMs in the German automotive industry and jointly define tailor-made materials for their customer requirements.

Maximum precision for complex cross-sections.