Engineering Volume 41

Engineering Volume 41

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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. 1886 edition. Excerpt: ...of the former metal. The addition of this alloy at o11ce lowers the fusion point of the charge some 500 deg. and renders it very fluid, so that it can be cast in the finest moulds, and there is plenty of time to handle it without any danger of its setting too soon. The great fluidity also allows a rapid and ready escape of all gases, and the castings obtained are very fine, sound, and tough. It is said that these Mitis castings are 30 to 50 per cent. stronger than the iron from which they are produced. Aluminium is not credited with being the cause of this, though its addition to most metals certainly does cause an increase of strength. But it is stated that on hammering, the Mitis castings lose this increase and return to the fibrous appearance, and to the strength of the iron used. The alloys of aluminium with iron and steel have long been known, but this application appears to be quite new. The aluminium alloy used is made by the Cowles Electric Smelting Company, and contains 6 to 8 per cent. aluminium, and 1 to 1 per cent. silicon. It costs 40 cents. per pound. It is not stated whether this alloy might be similarly used to lower the fusion point of steel in making steel castings, but our contemporary hopes soon to have some data to lay before its readers on this important matter. Pao'rsc'r1oN dr Woonnn Pnzas 1-'non F1ns.--Queenborough Pier, formingvcne of the termini of the Gentinental steamboat service of the London, Chatham, and Dover Railway was totally destroyed by fire three years ago. Upon its re-erection in August last arrangements were made with Shand, Mason, and Co. to supply one of their fixed steam fire engines for the protection of the pier and oifices. The engine is of the horizontal construction, and is placed in...show more

Product details

  • Paperback | 1186 pages
  • 189 x 246 x 59mm | 2,068g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236798333
  • 9781236798336