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File:The American journal of roentgenology, radium therapy and nuclear medicine (1906) (14570845269).jpg

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Identifier: americanjournroen07ameruoft (find matches)
Title: The American journal of roentgenology, radium therapy and nuclear medicine
Year: 1906 (1900s)
Authors: American Radium Society American Roentgen Ray Society
Subjects: Radiotherapy X-rays
Publisher: Springfield, Ill. C.C. Thomas
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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Fig. 2. Mold .\ni) Hydraulic Press for M.akixgRods from Tungsten and Molybdenum Powder.The operator is removing a rod from the moldafter pressing in the hydrauHc press at the right. then re-heated in the furnace and is readyfor the next pair of swaging dies, whichwill again reduce its diameter by lo per cent.When the rod is at the recjuired diameter forthe head of the anode, the end of the rodonly is swaged down to form the taper andstraight portion to which the molybdenumstem is attached. After rough grinding toapproximate size and shape, the anode headand molybdenum stem are swaged together.The assembly is completed by the additionof an iron collar and a thin metal tube andthe finished anode is then polished and verycarefully cleaned. (f) Tungsten Wire for Cathode Fila-
Text Appearing After Image:
Fig. 3. Treating Bottle and Transformer for Sin-tering Tungsten and Molybdenum Rods. Theoperator is lowering the bottle over the rodwhich is held in place by the heavy copper clamp. while cold. Also for a given amount of me-chanical working, it is stronger thanwrought tungsten. V^arious parts of the ca-thode and anode structures are made fromit. Its preparation is similar to that ofwrought tungsten. Copper-Backed Tungsten An^odes.—The anodes for radiator type tubes are madeby casting specially purified (boronized)copper around a carefully cleaned tungstendisc in a vacuum.^ Copper and tungsten do - Coolidge. Metallic Tungsten and Some of ItsApplications. Trans. Am. Inst. Elect. Engrs., 31 (i),1219-28, 1912. Manufacture of the Coolidge A-Rav Tube 257 not alloy with one another, but under theconditions employed, the melted copper wetsthe tungsten and adheres firmly to it whenit solidifies. This process assures good ther-mal conductivity between the tungsten andthe copper. The finished

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  • bookid:americanjournroen07ameruoft
  • bookyear:1906
  • bookdecade:1900
  • bookcentury:1900
  • bookauthor:American_Radium_Society
  • bookauthor:American_Roentgen_Ray_Society
  • booksubject:Radiotherapy
  • booksubject:X_rays
  • bookpublisher:Springfield__Ill__C_C__Thomas
  • bookcontributor:Gerstein___University_of_Toronto
  • booksponsor:University_of_Toronto
  • bookleafnumber:269
  • bookcollection:gerstein
  • bookcollection:toronto
  • bookcollection:medicalheritagelibrary
Flickr posted date
InfoField
27 July 2014

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