Aluminium is a soft, lightweight metal, metallic silver grey blur, because there is a thin layer of oxidized form very quickly when it to outside air. Corrosion-resistant aluminum and sustainability by the oxide layer of protection. This material is also not infected from and does not burn when to outside air at normal conditions. Aluminum alloy is one of the very few metal can be cast by many methods such as pressure casting, metal casting, molding sand (dry and fresh sand mold mold), plaster mold casting, continuous casting, flow patterns. Some new advanced casting methods, such as casting model fire can also apply.
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