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Illustration of stepwise bronze casting by the lost-wax method. 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.
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Inlet-outlet cover of a valve for a nuclear power station produced using investment casting. Investment casting is an industrial process based on lost-wax casting, one of the oldest known metal-forming techniques. [1] The term "lost-wax casting" can also refer to modern investment casting processes.
Lost-foam casting – Type of evaporative-pattern casting process; Lost-wax casting – Process by which a duplicate metal sculpture is cast from an original sculpture; Molding (process) – Shaping a liquid or plastic material by making it conform to a more rigid mold; Plaster casting (process) [18] – Sand casting process with use of plaster ...
A modified die casting machine is used to inject the semi-solid slurry into reusable hardened steel dies. The high viscosity of the semi-solid metal, along with the use of controlled die filling conditions, ensures that the semi-solid metal fills the die in a non-turbulent manner so that harmful porosity can be essentially eliminated.
A bronze casting showing the sprue and risers. A riser, also known as a feeder, [1] is a reservoir built into a metal casting mold to prevent cavities due to shrinkage.Most metals are less dense as a liquid than as a solid so castings shrink upon cooling, which can leave a void at the last point to solidify.
General Bronze's newly purchased foundry produced “virtually all of the sculpture for Rockefeller Center, numerous national monuments, and many sculptures for the W.P.A, in addition to its usual complement of private commissions." [7] The Roman Bronze works excelled in the lost-wax casting method and permitted large works to be cast in one piece.
In the Late Bronze Age, Cyprus produced numerous bronze stands that depicted a man carrying an oxhide ingot. The stands were designed to hold vases, and they were cast through the lost-wax process. [21]: 341, 344 The ingots show the familiar shape of four protruding handles, and the men carry them over their shoulders. These Cypriot stands were ...