Steel, Its Varieties, Properties, and Manufacture; With Numerous Engravings and Diagrams

Steel, Its Varieties, Properties, and Manufacture; With Numerous Engravings and Diagrams

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...if the heat of the ingot could be redistributed uniformly through it, .it would be quite hot enough to be rolled and the reheating could be dispensed with. This was achieved by the soaking pit, which was introduced by Mr. Gjers in 1882, and which very soon became general. The soaking pit is a brick-lined cavity a little larger than the ingot it is to contain, provided with a wellfitting cover. The pits are always arranged in series. A hot ingot is put into the soaking pit (Fig. 64), and by radiation it heats the brickwork. This ingot is taken out and replaced by another until the pit is hot enough, these ingots, of course, being reheated in the furnace. When the pit is hot an ingot is put in and left till it is thoroughly soaked--i.e. till the heat is uniformly distributed--when it is taken out and sent to the rolls and another ingot put in its place. The soaking pit answers perfectly where there is a regular and continuous supply of ingots of fairly uniform size, but this is not often the case, and if the supply of ingots be intermittent the pit may get too cool to be eflicient. Vertical Soaking Furnace---The soaking pit in its simple form is now generally abandoned, or, rather, it has been modified into a vertical soaking furnace (Figs. 65 and 66). This is a chamber, placed below the level of the ground, capable of holding 12, 20, or any other number of ingots, and having an opening at the top for each ingot space, provided with suitable covers. At each end is a pair of regenerators by which gas and air can be heated and passed on into the furnace. By this means the temperature can be regulated as required, gas being used to make up for any deficiency in the heat of the ingots. The ingots are lowered vertically into the furnace by a..show more

Product details

  • Paperback | 68 pages
  • 189 x 246 x 4mm | 141g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236769686
  • 9781236769688