The complete manufacture and assembly of extrusions refers to both the extrusion process, as well as the assembly of a final design from these extrusions via welding or other joining methods.
First, a die is created which resembles the desired cross-sectional profile of the extrusions. This is mounted to one end of an extrusion press, whilst the material is placed into the cylinder and forced through the die by a piston. Depending on whether a hot or cold extrusion process is being used, the material may be heated, or kept at room temperature.
As the material is forced out of the die, it takes on its profile, meaning that long lengths of extruded material can be created with cross-sectional consistency. These are then cut to the required length, before any required secondary machining operations/surface treatments are carried out.
The assembly of extrusions involves joining the extrusions together, or to other components, to form the final design - for instance, a frame. The assembly process can be completed via a number of methods such as welding, adhesion, or drilling depending on the application and desired finish.