This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...enclosing firebrick slabs These covers are lifted and replaced, when required, by cranes, or are moved by other contrivances. Each pit is about 6 inches deeper and 3 inches wider than the ingots intended to be dealt with. Soaking pits are worked by the heat remaining in the hot ingots which are charged into them. ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...enclosing firebrick slabs These covers are lifted and replaced, when required, by cranes, or are moved by other contrivances. Each pit is about 6 inches deeper and 3 inches wider than the ingots intended to be dealt with. Soaking pits are worked by the heat remaining in the hot ingots which are charged into them. Occasionally the ingots are allowed to cool down completely, and are afterwards reheated and rolled. To begin with, each pit is warmed by a succession of hot ingots which impart heat to the brickwork: on being taken out these ingots are reheated in a furnace. The pits, having been thus heated, are ready for regular working, and are charged with semi-cooled ingots. The heat of the steel tends to become equalised through the whole ingot. Little heat escapes from the pit, and much is absorbed and afterwards reflected from the brickwork on to the ingot. If a constant A, Fireclay cap or cover. B, Brickwork. C, Concrete foundation. D, Ingot. E, Firebrick lining. Fig. 57.--Gjers' Soaking Pit. F, Cast-iron plates. G, Cast-iron plates enclosing F. H, Cast-iron brick-lined cover. J, Working bottom. succession of hot ingots is kept up, the initial heat is sufficient, by equalising, to bring the whole mass of the metal into a fit Btate for rolling. The advantages of the. soaking pit are: --(a) Saving of fuel, (6) The ingots are handled and kept in a vertical position, (c) The four sides of the ingots are heated equally, and (d) The waste of iron is lessened. The chief drawbacks are the awkwardness of the preliminary heating and the uncertainty of maintaining a constant supply of hot ingots from the casting pits. It is now usual to have soaking pits coal-fired, or in conjunction with producers which supply the gas for heating the pits before starting and when em...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.