Extrusion
A heated billet is pressed through a die with great force, and the finished profile emerges from the die like icing through a pastry bag to decorate a cake. The profile emerges at a speed of 5–50 meters per minute and reaches a length of 25–45 meters.
To ensure that the profiles are straight and to release internal stresses, the profiles are stretched after cooling. At the same time, they are checked to ensure that all key functional dimensions and the surface quality are correct. The profiles are then cut to the appropriate length. Would you like to read more about the extrusion process at Sapa Group? Click here
Extruding multi-functionality
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A "Fantasy profile" with multi-functionality.
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The profile to the left is an example of how we can integrate many different functions into a single aluminium extrusion.
Examples of these functions are:
- Clip joints
- Hinges
- Pipes
- Circuit board mountings
- Heat sink cooling
- Mounting rails
- Screw holes
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