What is it?
It is a hot transformation process of cylinders of aluminum alloy (billets) in profiles, through its compression against a tool, called die, which will give the desired shape.
The aluminum alloys generally used for extrusion of architectural profiles are from 6000 class having a high suitability for hot working, are heat treatable and offer good resistance to corrosion, revealing a good compromise between strength and ductility.
Extrusion - Production Cycle
The billet is preheated at 460ºC and thereafter sliced in function of the total amount of the extruded profile.
The extrusion press receives the billet from one side and in the side opposite the die, which is also pre-heated to avoid heat shocks.
The billet is pressed against the die through a piston, forcing the profile to leave the press, whose shape is entered in the die.
Fans placed at the press exit and over a track with close to 100 meters cool down the profile, being trapped by the tip of the pliers that pulls it until the end of the track.
Then, the profile goes to the stretch bank where is fixed at the extremities by two claws and stretched for aligning and straightening any kinks, then on to the court as requested by the client.
Follows the maturation where in an artificial aging furnace, the profiles remain for 6 hours at 185ºC for reinforcing its mechanical properties.
Finally, the profile can be packed and dispatched, or forwarded to the Anicolor Surface Treatment Unit where it will receive the anodizing or lacquering treatments.