Ingot iron

Bldckchen, n. (small) ingot, (small) pig, Blockeisen, n. ingot iron ingot steel, blocken, v.t. block (Metal.) bloom, cog, Block f bung, /. (Micros.) staining in toto. 

A rectangular iron ingot 15 cm by 15 cm by 30 cm is supported at the centre of a reheating furnace. The furnace has walls of silica-brick at 1400 K, and the initial temperature of the ingot is 290 K How long will il take to heat the ingot to 600 K ... 

Where high strength is important, wrought iron, ingot iron, or steel must be used. These are used for the drawbars of filter presses and hydraulic presses. (The head pieces of the latter must be of cast steel because cast iron is too weak.) Recently, welded electrosteel has also been used. Steel is also used for the spiral manometer tubes where ammonia is involved. Wrought iron is used for the bands on vats and for the reinforcing iron for concrete. 

The use of clean ferrous scrap (both steel and pig iron) will lead to increased purchase costs and will require investment in new cleaning equipment. There are no difficulties caused by scrap surface oxidation nor by using pig iron ingots during melting in cupola furnaces (reduction process). Electric furnaces will have difficulties only with contaminated scrap which does not comply with the parameters for steel scrap used in foundries. 

The phases present in products can differ from those predicted from equilibrium diagrams. Nonequilibrium metastable phases form at solidification rates experienced in commercial ingots. Because of the low rate of diffusion of iron in alurninum, equilibrium conditions can only be established by long heat treatments and are very slowly approached at temperatures below about 550 °C. Small additions of other elements, particularly manganese, can also modify the phase relations. 

In addition to these principal alloying elements, which provide soHd solution strengthening and/or precipitation strengthening, wrought alloys may contain small amounts of titanium and boron [7440-42-8J, B, for control of ingot grain size, and ancillary additions of chromium, manganese, and zirconium to provide dispersoids. AH commercial alloys also contain iron and siUcon. 

Rough ingot iron 1700-2040 0.87-0.95 Galvanized sheet iron, gray oxidized 75 0.276... 

A286 Alloy. A286 is an austenitic iron base alloy that has been used for years in aircraft engine applications. Its use for industrial gas turbines started about 1965, when technological advances made the production of sound ingots sufficient in size to produce these wheels possible. 

The first stage in the conversion of iron ore to steel is the blastfurnace (see Panel), which accounts for the largest tonnage of any metal produced by man. In it the iron ore is reduced by coke, while limestone removes any sand or clay as a slag. The molten iron is run off to be cast into moulds of the required shape or into ingots ( pigs ) for further processing — hence the names cast-iron or pig-iron . This is an... 

Guss-beton, m. cast (or poured) concrete, -blase, /. flaw in a casting, blowhole, -blei, n. cast lead, -block, m. ingot, -bruch, m. broken castings, cast-metal scrap specif., cast-iron scrap. 

Stahl-blech, n. steel plate, sheet steel, -block, m. (Metal.) steel ingot, -bombe, /, steel cylinder steel bomb, steel shell, -brunnen, m. chalybeate spring, -draht, m. steel wire, -eisen, n, steely iron, steel pig, stShlen, v.t. steel, harden convert into steel. stShlern, a. of steel, steel. 

Stangen-blei, n. bar lead, -eiaen, n. bar iron, rod iron, -gold, n, ingot gold, -kali, n. potash in sticks, stick potash, -kitt, m. stick cement, -kupfer, n, bar copper, rod copper, -lack, m. stick-lac. -schwefel, m. roll sulfur, stick sulfur, cane brimstone, -seife, /. bar soap, -silber, n, ingot silver, -spat, m, columnar barite, -stahl, m. bar steel rod steel, -stein, m. pycnite (columnar topaz), -tabak, m. roll tobacco, -wachs, n. stick wax, stick polish, -zinn, n, bar tin. 

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