Foundry Volume 9-10

Foundry Volume 9-10

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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. 1896 edition. Excerpt: ...on top of the cope. These plates are removed after the mold has been dried. There are more steel castings lost through contraction than from all other causes combined. This can be accounted for largely by the extreme hardness to which the sand used will bake, thereby resisting the free contraction of the casting. At x n. '/. and in. Fig. 2, are brackets cut on the arms of the gear, the same being necessary to keep the arms from breaking at that point. Usually, a steel foundry foreman will give more study to properly bracketing a casting than to any other one subject. I have heard iron molders remark that the only requisite to lreing a good steel molder was a stiff back and a weak mind. Al though a steel molder would be a failure on green-sand work, his mental abilities would be of as much use to him in the steel foundry as in an iron shop. Phenomena of Cast Iron Investigated. Bv s. s. KNKJHT. Every one familiar with foundry practices, especially those pertaining to iron metallurgy, if possessed with a thougutful disposition, must have, when experiencing phenomena connected with this metal, tried to And some explanation of these satisfactory to himself. It is the purpose of the author to show in this article how some of these may be explained, and in doing this to avoid as far as possible the use of technicalities employed only by those whose work is connected with the natural sciences. In the first place, it should be known, that in order to investigate any of tho phenomena of nature, it is necessary to adopt come statement founded upon observed facts. Which the investigator may use as a basis for his further operation. This statement need not be necessarily true, but should be in accord with all the knowledge which the operator possesses at the...
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Product details

  • Paperback | 344 pages
  • 189 x 246 x 18mm | 617g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236581377
  • 9781236581372