steel-ingot section
21zone melting — 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] * * * Any of a group of techniques used to …
22Electrochemistry — is a branch of chemistry that studies chemical reactions which take place in a solution at the interface of an electron conductor (a metal or a semiconductor) and an ionic conductor (the electrolyte), and which involve electron transfer between… …
23Foundry — A foundry is a factory which produces metal castings from either ferrous or non ferrous alloys. Metals are turned into parts by melting the metal into a liquid, pouring the metal in a mold, and then removing the mold material or casting. The most …
24Pipe (material) — A pipe is a tube or hollow cylinder used to convey materials or as a structural component. The terms pipe and tube are almost interchangeable. A pipe is generally specified by the internal diameter (ID) whereas a tube is usually defined by the… …
25History of Sheffield — The history of Sheffield, a city in South Yorkshire, England, can be traced back to the founding of a settlement in a clearing beside the River Sheaf in the second half of the 1st millennium AD.Vickers, Old Sheffield Town , part 1] The area had… …
26Die casting — An engine block with aluminium and magnesium die castings. Die casting is a metal casting process that is characterized by forcing molten metal under high pressure into a mold cavity. The mold cavity is created using two hardened tool steel dies… …
27billet — I. noun Etymology: Middle English bylet, from Anglo French billette, diminutive of bille bill Date: 15th century 1. archaic a brief letter ; note 2. a. an official order directing that a member of a military force be provided with board and… …
28Anthropology and Archaeology — ▪ 2009 Introduction Anthropology Among the key developments in 2008 in the field of physical anthropology was the discovery by a large interdisciplinary team of Spanish and American scientists in northern Spain of a partial mandible (lower… …
29Shansi — /shahn see /, n. Older Spelling. Shanxi. * * * ▪ province, China Introduction Chinese (Wade Giles) Shan hsi, (Pinyin) Shanxi, sheng (province) of northern China. It has an area of about 60,200 square miles (156,000 square kilomet …
30Kilogram — Kg redirects here. For other uses, see Kg (disambiguation). Kilogram A computer generated image of the international prototype kilogram (IPK). The IPK is the kilogram. The IPK, which is roughly the size of a golf ball, sits here alongside a ruler …
