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Molten metal before casting Casting iron in a sand mold. In metalworking and jewelry making, casting is a process in which a liquid metal is delivered into a mold (usually by a crucible) that contains a negative impression (i.e., a three-dimensional negative image) of the intended shape.
A red-hot metal workpiece is inserted into a forging press. Plastic deformation involves using heat or pressure to make a workpiece more conductive to mechanical force. Historically, this and casting were done by blacksmiths, though today the process has been industrialized. In bulk metal forming, the workpiece is generally heated up. Cold ...
On the continent, the 1804 Pont des Arts in Paris is an early and elegant use of cast iron for a major city river crossing (the metal work of the current bridge is a near identical copy built in 1984 due to structural decay). Another notable example is the elegant Ha'penny Bridge in Dublin, cast by the Coalbrookdale foundry, and built in 1816 ...
Venice Biennale installation by Małgorzata Mirga-Tas (2022) - artistic upcycling of old textile materials. While recycling usually means the materials are remade into their original form, e.g., recycling plastic bottles into plastic polymers, which then produce plastic bottles through the manufacturing process, upcycling adds more value to the materials, as the name suggested.
Traditional metal working in Mexico dates from the Mesoamerican period with metals such as gold, silver and copper. Other metals were mined and worked starting in the colonial period. The working of gold and silver, especially for jewelry, initially declined after the Spanish conquest of the Aztec Empire. However, during the colonial period ...
Lost-wax casting – also called investment casting, precision casting, or cire perdue (French: [siʁ pɛʁdy]; borrowed from French) [1] – is the process by which a duplicate sculpture (often a metal, such as silver, gold, brass, or bronze) is cast from an original sculpture. Intricate works can be achieved by this method.
A conversion coating is a chemical or electro-chemical treatment applied to manufactured parts that superficially converts the material into a thin adhering coating of an insoluble compound. These coatings are commonly applied to protect the part against corrosion , to improve the adherence of other coatings, for lubrication , or for aesthetic ...
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