Thursday, September 21, 2017

Understanding The Processes Used In Aluminium Extrusion

By Jose Stewart


Aluminum is one of the most used metals in today's society - it can be found across many industries, such as construction and commercial, and in a number of applications, such as beverage cans and appliances. When choosing a manufacturer of aluminium extrusion for supplying the metal that you use in your workplace, however, it is important that you carefully consider which one will be best for your needs.

Companies manufacturing extruded aluminum products offer extruded aluminum profiles, systems and finished products and semi-manufactured components. Enterprises manufacturing aluminum products are generally in search of products that can fulfill the needs of the customers.

Usually, two types of mechanical working processes are employed by an aluminum extruder- hot working and cold working. In a hot working method, the billet is heated up to a temperature over 175 F, the recrystallization temperature of aluminum. At this high temperature, the metal is distorted easily, and new grains are produced. Then it is given the desired shape.

The reason for the popularity of the hot working process over the cold working one can be fully realized when you compare aluminum squeezing to squeezing toothpaste out of its tube. It is much easier to extrude the metal when it is malleable, meaning that it must have been heated to a certain temperature.

There are several advantages to aluminum squeezing. Aluminum is a widely available metal, and through constant cross-section, several parts can be manufactured in the most reasonable way. The process of squeezing allows taking advantage of properties of aluminum and it expands. Thus, this manner indeed versatile as you can manufacture several shapes in just a simple process.

The hot squeezing process is done in a special horizontal hydraulic press, and its capacity may fluctuate from 200 to 6000 tonnes. The temperature can be as high as 450 C for aluminum squeezing. Three types are available- hot squeezing direct, indirect and tube squeezing.

To obtain superior quality and improved surface finished aluminum squeezings, accurate temperate and its monitoring is vital. The finishing increases the durability, strength and its appearance. In the 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 vary according to the requirements of the product, customers and its application.

It is corrosion resistant and can offer you good service over the years. If you want you can easily recycle the metal. After steel all over the world aluminum is the most trusted and used metal. It can be fabricated to several shapes right from sheets, geometric shapes, to foils, tube, rod, and wire. The prime source of aluminum is bauxite ore and Feldspar to some extent. Some of the fields where the this metal's extruded shapes are used include transportation, building and construction to name a few.




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