Reports of the Commissioners of the United States to the International Exhibition Build at Vienna, 1873

Reports of the Commissioners of the United States to the International Exhibition Build at Vienna, 1873

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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. 1876 edition. Excerpt: ...limited to the remaining alloys. It was found necessary to continue the rolling of the rods in order to reach the hardness of steel) with the--10 per cent, bronze, to an elongation of 20 per cent.; 8 per cent, bronze, to an elongation of 30 per cent.; 6 per cent, bronze, to an elongation of 50 per cent. $ with the--10 per cent, bronze and 2 per cent, zinc, to an elongation of 10 per cent.; 10 per cent, bronze and 1 per cent, zinc, to an elongation of 15 per cent.; 8.5 per cent, bronze and J per cent, zinc, to an elongation of 20 per cent.$ The results of the tests made can be seen from the following table: These tests showed that, in general, the 10 per cent, as well as the 8 per cent, and 6 per cent, bronzes are capable of being employed in the new method of making gun-barrels, while the addition of zinc is of no use whatever, but, on the contrary, decreases its value to no Inconsiderable degree'. The 8 per cent, bronze was judged to be the best for large castings, and this one has, therefore, been taken as the basis for steel-bronze. 304. A number of trials were made to determine what method of casting and cooling would, make the inner layers of the casting homogeneous, and which would have the necessary toughness for standing the treatment to which they were to be subjected later. These trials required much time and patience, and were so extensive that they cannot be enumerated here. The result of all these trials, that is, the method of casting which fulfilled the object in question, and which was, therefore, adopted, cannot be communicated, as it is kept a secret by General Yon Uchatias. Simultaneously with these trials, those castings whose quality was shown to be good, by the appearance of the fracture, were subjected to the mechanical...show more

Product details

  • Paperback | 240 pages
  • 189 x 246 x 13mm | 435g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • Illustrations, black and white
  • 1236583248
  • 9781236583246