Metallurgy - 14: The Making of Aluminum
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Aluminum is a very common material in the aerospace industry and, as such, it finds its way into the machine shop just as often as steel.. The process of making aluminum is quite long and complicated. However the animation and the following text will give a decent overview:

An electro chemical process known as the Bayer process is used to make aluminum. Aluminum is made primarily of bauxite ore found in many regions of the world. The ore is crushed and ground into a fine powder that is chemically treated so that it can re-solidify in the appropriate composition. The final step of the process is to melt the solidified mixture through an electrolytic process. Note that the resultant aluminum is rarely used in its pure form and is often alloyed with silicon, magnesium, or other alloying elements

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label: ductility, elasticity, hardness, rockwell, brinell, malleabliity, toughness, fatigue, blast furnace, oxygen furnace, electirc furnace, alloy, alloying, aluminum