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Vacuum metallurgy is the field of materials technology that deals with making, shaping, or treating metals in a controlled atmosphere, at pressures significantly less than normal atmospheric pressure. [1]
Vacuum systems usually consist of gauges, vapor jet and pumps, vapor traps and valves along with other extensional piping. A vessel that is operating under vacuum system may be any of these types such as processing tank, steam simulator, particle accelerator, or any other type of space that has an enclosed chamber to maintain the system in less than atmospheric gas pressure.
Vacuum arc remelting (VAR) is a secondary melting process for production of metal ingots with elevated chemical and mechanical homogeneity for highly demanding applications. [1] The VAR process has revolutionized the specialty traditional metallurgical techniques industry, and has made possible tightly controlled materials used in biomedical ...
Roblox (/ ˈ r oʊ b l ɒ k s / ⓘ, ROH-bloks) is an online game platform and game creation system developed by Roblox Corporation that allows users to program and play games created by themselves or other users. It was created by David Baszucki and Erik Cassel in 2004, and released to the public in 2006. As of August 2020, the platform has ...
A bloomery in operation. The bloom will eventually be drawn out of the bottom hole. A bloomery is a type of metallurgical furnace once used widely for smelting iron from its oxides.
By comparison Sinel'nikov powder is a powder in a vacuum, gran sizes range from 100 to 200 micrometers, the powder density is 1.35 g per cm −3. Sinel'nikov, N.N. and Filipovich, V.N., Soviet Phys. Tech., 3, 193–6, 1958. The TPRC record is blurred up some on the Sinel'nikov vacuum which looks like it is probably 5 ⋅ 10 −5 mmHg.
In metallurgy, alpha case is the oxygen-enriched surface phase that occurs when titanium and its alloys are exposed to heated air or oxygen. Alpha case is hard and brittle, and tends to create a series of microcracks that will reduce the metal's performance and its fatigue properties.
In 1952, the company was established as Japan Vacuum Engineering Co. Ltd, initially focusing on importing and selling various vacuum equipment. In 1973, the company ventured into the vacuum metallurgy business. In 2001, it was renamed to ULVAC, Inc. [3] [4] In 2014, ULVAC acquired the VAT Vacuum Products AG, a Swiss vacuum valve manufacturer.