One uses variously powered indirect or direct extrusion presses for the extrusion process. The standard procedure has some stages, though they may need to be adjusted or added to accommodate a certain client’s circumstances.
However, it would help if you chopped the cast aluminum rods into smaller pieces even before the extrusion process can begin. Billets are the term for these little sections. The extruded bars will all be uniform in length because of the pre-cut billets, and you will waste no raw materials.
Table of contents
Preparation of Extrusion Die
First, a die in the shape of a circle must be machined. Conversely, you can use one that is already in use. Before beginning the extrusion operation, heat the die to 450 and 500 degrees Celsius. It guarantees uniform metal flow and lengthens the die’s service life. After heating the extrusion press, you can load the die into it.
Preheat the aluminum billet in preparation for extrusion.
After that, you make a billet by turning a lengthy alloy slab into a round block. Temperatures in such ovens typically range from about 400 to 500 degrees Celsius. Hence, it is malleable enough to be extruded without being molten.
Extrusion
As the aluminum billet is heated, you push it through the slots in the tool. It is possible to alter the size and shape of these openings to meet a wide range of requirements. Similar to how you may change the discs on a cookie press to make cookies of different shapes and sizes, this method allows you to do the same thing. Before exiting the press, you extrude bars to their final form.
Thermostatically Variable
The extruded bars, tubes, or profiles will rapidly cool, allowing for subsequent usage. The final bars or profiles are released from the press and dropped into a water bath for a uniform quench.
The material’s desirable mechanical properties and microstructure are only attainable during quenching. Material deformation might occur if the cooling phase after the extrusion process is delayed.
Stretching
The extruded bars are shortened to the desired interphase length just after being quenched. Once you chop the bars, they are transferred to a runout table by a puller. It allows them to decrease their body temperature even further. Here, the tension built inside the bars during extrusion is released, resulting in elongation and a guarantee of the bars’ mechanical characteristics.
The extrusions are rolled to a cutting saw and subsequently sliced to size.
Once the aluminum extrusions have been straightened and work-hardened, you can transfer them to a saw table. You can cut these to any length between 8 and 21 feet. When you finish sewing, put the finished product in an oven to age until it reaches the desired hardness (T5 or T6).
Complete Related Tasks (Heat treatment, Fabrication, and Surface Finishing)
After extrusion, the profiles can be heated to improve their qualities. It is possible to alter the proportions after heat treatment through fabrication. A surface finish would improve their aesthetics and protect them from corrosion.
Aluminum extrusion is a manufacturing process that uses high pressure to force molten aluminum through a die, creating components with precise, custom-shaped cross-sections. As a result, the shapes that emerge can be simple or complex, solid or hollow, or even semi-hollow.
The extrusion process is intriguing because the finished profiles may be tailored to each customer by being heated, polished, and built-in any way the designer sees fit. These profiles come in lengths from 8 to 24 feet.
At JMA, we use state-of-the-art machinery and only the finest aluminum in our extrusion process. You can guarantee a great outcome if you use this method. Visit our website or give us a call to find out more about our company and the services we provide.