Metal-work; a handbook for teachers and students (1914)
Adam, Hugh M. [from old catalog], Evans, James Humphrey, [from old catalog] joint author · New York, Longmans, Green and co.; London, E. Arnold · leaf 51
r Open-Hearth Process.—In 1856 FriedrichSiemens invented the process which takes his name. By hisprocess, which is analogous to the puddling process, thedecarburization of the pig-iron is effected by pure oxidizediron ore, usually Spanish red haematite. The furnace, whichis of the reverberatory… … FiG. 8.—Siemens Regenerative Furnace. bers are built of chequered brickwork, as shown in Fig. 8.The chambers are always built in pairs, and are alternatelyheated by the hot gases which descend through them to escape.When one pair is heated, the waste heat is turned into theother pair, and the air…
Metal-work
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