Extruding is the process by which a metal of a fixed cross section is created. The aluminum metal is heated and passed through a cross sectional object known as a die. There are several different complex shapes that can be created. Extrusion is the ideal means by which a brittle object can be shaped. Even a finish can be added to the metal. Extruded aluminum can be made even when the alloy is hot or cold. Customized length and dimensions can be created with this process. Extruded aluminum is generally hollow and is mainly used for construction.
Extrusion begins by heating the material to high temperatures. Once the heating is completed it is passed through a container and a press. The extruded aluminum is then passed and stretched to have it straightened. Extrusion can be used to instill properties into metals and composites. There are two different processes, these are hot and cold extrusion. Hot extrusion is done to by heating the metal above the re-crystallization temperature. This allows the die to reshape the metal by reorganizing the microstructure. Hydraulic machinery is used throughout the hot extrusion process. However there are drawbacks that affect the machinery. The damage and maintenance costs to the machinery in the processing of hot extrusion are steep.
Extruded aluminum has a higher tensile strength than other aluminum alloys. This is due to the rearrangement of the microstructure. Additional properties such as higher tensile strength and increased elasticity can be added to the alloy. Extruded aluminum is large part of the aluminum market. This is due to the high demand for extruded aluminum in the construction sector. Extruded aluminum can be customized much easier than steel and its alloys. Die services can be contacted to create custom extruded aluminum. Die cross sections can be purchased from a variety of different sources.
Aluminum frames can be made via extrusion. This is mainly for decorations for household railing and stairways. Extruded aluminum is also used create heavy machinery and scaffolding. Construction aluminum is tempered with several different alloys to increase the strength. Therefore extruded aluminum will have a higher cost than standard aluminum. Aluminum pipes of a customized cross section and length can be purchased for household piping and support. Aluminum has been popular due to its resistant nature. Corrosive elements within the atmosphere cannot alter the shape or layering of the pipe. Extruded aluminum is a cheaper alternative to steel alternatives and copper beams.
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