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It is also possible to use conventional gas metal arc welding attached to a 3D stage to 3-D print metals such as steel, bronze and aluminum. [ 67 ] [ 68 ] Low-cost open source RepRap -style 3-D printers have been outfitted with Arduino -based sensors and demonstrated reasonable metallurgical properties from conventional welding wire as feedstock.
3D printing, or additive manufacturing, is the construction of a three-dimensional object from a CAD model or a digital 3D model. [1] [2] [3] It can be done in a variety of processes in which material is deposited, joined or solidified under computer control, [4] with the material being added together (such as plastics, liquids or powder grains being fused), typically layer by layer.
Another approach is to use an electron beam to melt welding wire onto a surface to build up a part. [15] This is similar to the common 3D printing process of fused deposition modeling, but with metal, rather than plastics. With this process, an electron-beam gun provides the energy source used for melting metallic feedstock, which is typically ...
Aluminium in Africa originates from bauxite, and within Africa is primarily found in Guinea, Mozambique and Ghana. [1] Guinea is by far the biggest producer in Africa, and is a world leader in bauxite production. [2] There are many companies involved in the aluminium trade in Africa.
Mozal is an aluminium smelter joint project in Beluluane Industrial Park, Maputo, Mozambique. [2] The project is a smelting facility that began operations as a producer of aluminium exclusively for export. The smelter is located 20 kilometres (12 mi) west of the city of Maputo in the south of the country.
Stereolithography is a 3D-printing technique that uses photopolymerization to bind substrate that has been laid layer upon layer, creating a polymeric network. As opposed to fused-deposition modeling, where the extruded material hardens immediately to form layers, 4D printing is fundamentally based in stereolithography, where in most cases ultraviolet light is used to cure the layered ...
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Digital printing is a method of printing from a digital-based image directly to a variety of media. [1] It usually refers to professional printing where small-run jobs from desktop publishing and other digital sources are printed using large-format and/or high-volume laser or inkjet printers.