The method of transforming aluminium alloy into certain objects is called aluminium extrusion and it includes cross-sectional profile for different purposes. The process of extrusion involves combining the different properties of steel which include malleability, density and stiffness. With the combination of the three impressive properties, you get a product that can be casted and machined easily while retaining its strength and stability. The product is also excellent when alloyed with other products made of metal. For a better understanding on how aluminium is made, take a look at how the production process is done.
- First, the shape of the die is designed and created. After that, the aluminium alloy is heated at 800°F-925°F in a cylindrical billet.
- After heating the aluminium alloy, the aluminium billet is moved to the loader. A certain amount of lubricant is added to prevent the components from sticking on the extrusion machine especially along its walls, ram and handle.
- Using the ram, astrong amount of pressure would be applied to the dummy block. The ram functions to push the aluminium billet into a different container. This allows the aluminium billet to be pushed through the die.
- To prevent the development of oxides, nitrogen is added on the mixture. Nitrogen makes the aluminium billet to flow easily into the different sections of the die. This allows for the creation of slow atmosphere that promotes longer life of the die.
- After the prior steps, the aluminium extrusion goes through a run-out table and comes out as an elongated piece. The extrusion has the same shape of the die opening. The product will be transferred to the cooling table for it to cool down suing large industrial fans.
- When the product has cooled down, the aluminium extrusion will be moved to a stretcher for it to be hardened and straightened further.
- The cooled and hardened aluminium extrusion will be transferred to the saw table for cutting according to the required length.
- The last part is to treat the aluminium extrusion. The product is subjected to heating in age ovens and it hardens even more out of the aging process.