Chemical Age Volume 12

Chemical Age Volume 12

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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. 1910 edition. Excerpt: ...of which the Heroult furnace is the most familiar type, works with two arcs in series, the current entering the bath and leaving it also through electrodes suspended above it. The general style is that of an open-hearth furnace with electrodes pass ing through the roof. The current used is roughly 100 kilowatts per ton of steel capacity, and the largest so far operated is I5 tons. A three ton furnace of this type was seen by you at the Firth-Stirling Steel Vllorks at Demmler, yesterday, producing crucible-quality steel. The U. S. Steel Corporation has acquired licenses to operate the Heroult furnace, and has already two 15-I0n furnaces in operation. Without doubt, the Heroult furnace is at the present time the most popular and successful electric steel furnace in the United States. I have not time to more than name the Keller, the Hiorth, the Harmet, the Frick--all of which are operating at this present moment, in Europe. There are other ways of making steel than the crucible method. Bessemer steel is the cheapest, and open-hearth steel is next best. These two varieties grade into each other in quality, but between openhearth and crucible steel there is an enormous gap in price and in quality which is destined to be bridged over by intermediate qualities of electric steel, as it becomes cheaper and is manufactured on a larger scale. This will soon become one of the large uses of the electric method, occupying a field peculiarly its own. It will enable steel manufacturers to supply steel better than the best open-hearth product at less than the price of crucible steel. I need not enlarge upon the advantages of this, to a Pittsburg audience. There are also varieties of methods of manufacture of steel, aside from the melting together of...
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Product details

  • Paperback | 148 pages
  • 189 x 246 x 8mm | 277g
  • United States
  • English
  • black & white illustrations
  • 1236925092
  • 9781236925091