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Investment casting is an industrial process based on lost-wax casting, ... The history of lost-wax casting dates back thousands of years. [24]
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.
It manufactures castings for aircraft engines, industrial gas turbine engines, airframes, medical implants, armament, unmanned aerial vehicles, and other industrial applications. They are the market leader in manufacturing large, complex, structural investment castings and the leading manufacturer of airfoil investment castings used in jet ...
Howmet's roots go back to 1926, when Austenal, a company that manufactured materials for dental appliances, was founded. Its founders, Reiner Erdle and Charles Prange, worked to improve investment chrome base castings using two separate investments: The first coating, named "protective coat", gives a smooth finish.
Lost-foam casting is a type of evaporative-pattern casting process that is similar to investment casting except foam is used for the pattern instead of wax. This process takes advantage of the low boiling point of foam to simplify the investment casting process by removing the need to melt the wax out of the mold.
Centrifugal casting (industrial) Continuous casting; Die casting; Evaporative-pattern casting. Full-mold casting; Lost-foam casting; Investment casting (Lost-wax casting) Countergravity casting [1] Lost-foam casting; Low pressure die casting; Permanent mold casting; Plastic mold casting; Resin casting; Sand casting; Shell molding; Slush casting ...
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As demand for silver increased and large-scale manufacturing techniques emerged, silver products became much more standardized. For special-order objects that would likely only be made once, silversmiths generally used lost-wax casting, in which a sculpted object was carved out of wax, an investment casting was made, and the wax was melted away ...