Steel Processing and Conversion Volume 7

Steel Processing and Conversion Volume 7

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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. 1921 edition. Excerpt: ... a n1an's size job. "But how often do they introduce a first-class barber or a second-rate clerk to "la Brinnel machine, shove a hardness table in his hands, and tell him to go to it. Is it any wonder that everything from rubber boots to ginger bread is Brinneled in many of our plants? I have sometimes wondered what crimes poor old Brinnel must have committed in his younger days that he must he continually dragged into the mess and made arbitrator supreme of engineering materials. "Now, mind you, I'm not taking a slam at the Brinnel machine. It is a mighty valuable instrument, but, 'like dynamite, weather reports, and inside information, it must be used with discretion. To use the Brinnel machine to advantage, one must know the mechanics of heat treatment, as well as the limitations of the machine itself. The fault lies, not with the machine, but the people who use it. I tell THE price of a baseball admission ticket is usually, you, metallurgical inspection is no job for a ribbon clerk. A case in point: "About a month ago I arrived at an automobile plant just in time to referee a lively scrap between' the chief inspector and the mechanical engineer. The bone of contention happened to be some main shafts--chrome vanadium aPfairs----heat treated to Brinnel about 275 degrees. The shafts were about an inch in diameter and some thirty odd inches long. They Brinneled O.K., but a tensile test, machined from one of the shafts, showed a breaking strength of about 65,00() pounds per square inch. The engineer grabbed his hand-book and showed, according to numerous' authorities, that the tensile strength should have been at least 140,000 pounds, if the Brinnel readings were"; correct. The more

Product details

  • Paperback | 410 pages
  • 189 x 246 x 21mm | 730g
  • United States
  • English
  • black & white illustrations
  • 1236754115
  • 9781236754110