Extrusion
Process

Aluminium extrusion involves heating a billet and forcing it through a shaped die to create profiles with a consistent cross-section. After heating to around 400°C to 500°C, the malleable billet is loaded into an extrusion press and pushed through the die by hydraulic pressure or a screw mechanism. This process forms the aluminium into various shapes, from simple rods to complex profiles like window frames or automotive parts. Cooling follows to maintain the formed shape. It offers design flexibility, allowing for intricate shapes and precise dimensions. Further treatments such as heat treatment or surface finishing can enhance properties and appearance. Aluminium extrusion is valued for its versatility, cost-effectiveness, and sustainability, making it popular in construction, transportation, and electronics industries.

Extrusion process

Extrusion logs

Aluminum billets mark the inception of the extrusion process. These billets are either scalped or cut to specific lengths, resulting in pieces known as extrusion logs.

Extrusion process

Pre-Heating

Prior to the extrusion process, extrusion logs must undergo preheating beyond the recrystallization temperature. This is necessary as the as-cast microstructure is unsuitable for effective extrusion.

Extrusion process

Extrusion

Following the heat treatment process, logs are placed into the container and propelled through the die opening by the application of compressive forces generated by a hydraulically operated ram.

Extrusion process

Cooling

A puller and roller conveyor carefully guide the extruded profile as it emerges from the die. While on the roller conveyor, a sequence of fans cools down the profile, a crucial process known as cooling.

Extrusion process

Cutting

Once the desired length of the profile is achieved, a saw or shear is employed to cut the profile. To effectively diminish noise and vibration, resin-filled laser-cut slots are incorporated into the profile.

Extrusion process

Ageing

Our aging ovens are meticulously engineered to swiftly and thoroughly age each profile, ensuring maximum profile quality and significantly minimizing scrap material.