melting process
31Electron Beam Melting — (EBM) is a type of rapid prototyping for metal parts. It is often classified as a rapid manufacturing method. The technology manufactures parts by melting metal powder layer per layer with an electron beam in a high vacuum. Unlike some metal… …
32IME Process Metallurgy and Metal Recycling at the RWTH Aachen — The IME process metallurgy and metal recycling at the RWTH Aachen(IME) in Aachen represents the field of process metallurgy and metal recycling in research and training at the RWTH Aachen Aachen University. Its main aim is a qualification of… …
33open-hearth process — a process of steelmaking in which the charge is laid in a furnace (open hearth furnace) on a shallow hearth and heated directly by burning gas as well as radiatively by the furnace walls. [1885 90] * * * or Siemens Martin process Steelmaking… …
34Verneuil process — /verr noy /; Fr. /verdd nue yeu/ a process for making synthetic rubies, sapphires, spinels, etc., by the fusion at high temperatures of powdered compounds. Also called flame fusion process. [named after A.V.L. Verneuil, 19th century French… …
35zone-melting — /ˈzoʊn mɛltɪŋ/ (say zohn melting) noun a process of purifying solids whereby a small portion is heated for a short time by moving it through a heated zone or by moving the zone along the solid. The process is employed to obtain very pure metals… …
36Separation process — In chemistry and chemical engineering, a separation process, or simply a separation, is any mass transfer process used to convert a mixture of substances into two or more distinct product mixtures, at least one of which is enriched in one or more …
37Frasch process — The Frasch process is a method to extract sulfur from underground deposits. Most of the world s sulfur is obtained this way.Holes are drilled down through the overlying rock into the sulfur deposits. A special series of pipes are then inserted… …
38zone melting — noun see zone refining * * * a process of purifying any of various metals and other materials, as germanium or silicon, by passing it in bar form through an induction coil. Also called zone refining. Cf. cage zone melting. [1955 60] * * * zone… …
39Betterton-Kroll process — The Betterton Kroll process is an industrial process for removing bismuth from lead.Calcium and magnesium are added to a molten lead bismuth bath. The resulting bismuth compounds have higher melting points and lower densities than the lead, and… …
40crucible process — Technique for producing cast or tool steel. It was invented in Britain с 1740 by Benjamin Huntsman, who heated small pieces of carbon steel in a closed fireclay crucible placed in a coke fire. This was the first process used in Europe in which… …
