Aluminum extrusions are shaped pieces of aluminum that are manufactured in long strips. If you cut pieces of extruded aluminum to the same length once after they’ve extruded, the cross-sectional profiles should be exactly the same for each piece. Extrusion is especially compatible with aluminum’s properties, according to Spectra Aluminum.
Preparing the Die to Extrude Aluminum
While the process of extruding aluminum begins with creating the extruder die for the aluminum extrusion manufacturer, there are also a couple of other preparatory steps. The aluminum billet comes in a cylindrical form that needs to be heated to over 800 degrees Fahrenheit. The molten aluminum is then moved to a loader while a lubricant is being added to it. The lubricant’s purpose is to keep the molten aluminum from attaching itself to the extrusion machine or its ram and handle.
Pressure is Applied
A ram-and-dummy-block combination pushes the melted aluminum into the extruder loader, then the aluminum is forced through the extrusion die, according to Spectra Aluminum. Liquid nitrogen or nitrogen gas are added to make the atmosphere inert so the die lasts longer. The aluminum extrusion slides out of the extruder and onto a long table called a run-out. An operator then pulls or slides the extruded pieces to a cooling table so it can be cooled by fans.
Options for Extruded Aluminum Pieces
When the pieces made from aluminum extrusion alloys are being crafted, manufacturers may introduce other features into them, according to Spectra Aluminum. These other features may include things like pins or mandrels that pierce the aluminum as it passes through the die. Post-extrusion techniques include using anodizing materials or paint to change the appearance of the finished aluminum extrusions.
Things Made With Extruded Aluminum
Some things you may find in an aluminum extrusion catalog include car parts, home door and window trim, bike parts and parts of furniture. These pieces may be finished for decorative purposes, or they may be unfinished like fasteners and used for parts that don’t show when you look at your car or windows. Even computers, keyboards and computer mouse parts are made with extruded aluminum parts inside, according to Framing Tech.
Construction Uses for Extruded Aluminum
Construction is another field where extruded aluminum parts are used. Its lightweight but sturdy properties make it popular in trailers and sheds. It is, however, becoming more popular for heavier construction purposes, according to Framing Tech. While exterior design is one common use for extruded aluminum, it’s also used decoratively for details such as light fixtures and embellishments in stairwells. It’s also used to add stability to interior walls, even though it can’t safely be used to make a building’s frame.
