As aluminium is malleable in nature, it is easy to extrude. Extrusion dies are used for the aluminium extrusion process. These steel dies have opening of the desired shapes. Primarily, the extrusion process can be of two types – hot extrusion and cold extrusion. For hot extrusion process, precise heating is very important. It is done above the aluminium’s recrystallization temperature. While, cold extrusion is done at room temperature or near room temperature.
To obtain superior quality and improved surface finished aluminium extrusions, accurate temperate and its monitoring is vital. The finishing of the extrusions increases the durability, strength and its appearance. In the extrusion process, a billet is heated at the temperature of 400 °C to 500 °C and is pushed through the die under pressure to create preferred profiles. The shape, structure and specifications of the aluminium extrusions vary according to the requirements of the product, customers and its application.
The aluminium extrusions manufacturer prefer extrusion process over welding as it gives product with constant cross section. The strength and lightweight (strength-to-weight ratio) of aluminium extrusion makes it popular among customers. Its several other properties gives it edge over other metal extrusions. These are cost-effective, corrosion-resistive, flexible and durable.
The prime source of aluminium is bauxite ore and Feldspar to some extent. Whether it is aluminium or aluminium extrusions, both are extensively used in numerous applications. Some of the fields were the aluminium extrusions are used are transportation, building and construction to name a few.
