Aluminum extrusion involves heating aluminum until it becomes soft and pliable before forcing it through a die-shaped opening to form a particular cross-sectional profile. After that, the aluminum is cooled and formed into its new shape. In most cases, the opening of the die can be altered to produce various shapes and sizes to meet the particular requirements of a user. The majority of aluminum alloys that are extruded are lightweight, resistant to corrosion, attractive, and have excellent thermal and electrical conductivity. This process enables manufacturers of aluminum extrusion to produce long lengths of aluminum profiles that range from basic designs like tubes or bars to extremely intricate designs.

Products like furniture, window frames, door frames, and car parts all contain extruded aluminum. Construction also uses extruded aluminum because it is strong, long-lasting, and light. It is also corrosion-resistant and simple to recycle, making it an eco-friendly choice for many applications.

How does Aluminum Extrusion Work

1: Prepare the Extrusion Die and Load It into Extrusion Press

2: Preheat Aluminum Billet before Extrusion

3: Move the Billet to the Extrusion Press

4: Push Billet Material into the Extrusion Press Container

5: Press Up the Material Against the Extrusion Die

6: Quench the Extrusion

7: Shear the Extrusions to the Table Length

8: Cool Extrusions to Room Temperature

9: Move Extrusions to the Stretcher and Stretch Them into Alignment

10: Move Extrusions to the Finish Saw and Cut Them to Length

11: Carry Out Secondary Operations (Heat treatment, Fabrication, and Surface Finishing)

The Common Types of Aluminum Extrusion

Direct Extrusion

Direct extrusion, also known as forward extrusion, is the most widely used method of metal extrusion. In this extrusion, a material billet is pushed through a container by a high-pressure ram. The material then exits through the opening of the stationary die in the direction of the ram action.

Indirect Extrusion

The material is secured in a container during indirect extrusion. Using a hollow ram, the extrusion die moves over the material and pushes it through the die opening. Backward extrusion is another name for indirect extrusion because the material flows in the opposite direction of the ram action. Since there is no relative movement between the material and the container, this procedure generates less heat, uses less energy, and causes less friction.

Hot, Warm, and Cold Extrusion

The billet temperature in relation to the room temperature and the recrystallization of the material determine whether extrusion is hot, warm, or cold. Hot extrusion, which is frequently associated with direct extrusion, occurs when the billet is heated significantly above the material's recrystallization temperature. The material softens when heated, preventing work hardening. Because of this, the material flows more easily through the die, which reduces tool wear. When a material is heated above room temperature while remaining far below the recrystallization point, it is known as warm extrusion. In cold extrusion, the material is not heated, so it stays at room temperature.

Conclusion

At Asianstar,We apply machining service on the work-piece after extrusion profile finished, and we also offer a variety of finishes and coatings to meet surface standards.