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| Extrusion Forcing metal through an opening in a die causing the metal to take the shape of the die opening is called extrusion. Some metals, such as lead, tin, and aluminum, can be extruded cold; however, metals are generally heated before extrusion. The principal advantage of this process is its flexibility. For example, aluminum, with its ductile and malleable properties, can be economically extruded in more shapes and sizes than is practicable with many other metals. Extrusions are produced in simple as well as complex shapes. In addition, many structural parts, such as stringers, are made by the extrusion process.
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| Curriculum design: David L. Heiserman Publisher: SweetHaven Publishing Services |
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