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意味

Wiktionary英語版

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deadmelt

別の表記

dead-melt, dead melt

動詞

deadmelt (三人称単数現在形 deadmelts, 現在分詞 deadmelting, 過去形および過去分詞形 deadmelted)

(metallurgy) To melt steel at high temperatures in order to deoxidize it.
- 1917, The Engineer - Volume 124, page 277:
  At 0.09 per cent. carbon the bath is usually underdone.” because a relatively high temperature is required to deadmelt at this carbon.
- 1949, American Institute of Mining and Metallurgical Engineers, Incorporated, Proceedings, page 289:
  From these two heats it became apparent that steels of this composition, when deadmelted, tend to run several times higher in hydrogen than carbon steels.
- 1922, Metal Industry (London, England) - Volume 21, page 156:
  After the charge is thoroughly mixed, samples are taken and poured into a small mould to see if the steel is "deadmelted," and also if the silicon content is right, for this may be judged by eye in the way it “settles down."

名詞

deadmelt (複数形 deadmelts)

(metallurgy) The process of deadmelting steel.
- 1911, Transactions of the American Electrochemical Society:
  My proposition is to take otherwise finished steel from the Bessemer or open-hearth furnace, and hold it liquid, let us say thirty minutes, giving the oxides a chance to float up and the steel a chance to rest, thus giving it the equivalent of the deadmelt in the crucible.
- 1964, Management Accounting - Volume 46, Issues 1-6, page 14:
  A "sufficient amount" is defined as the gross charge weight of the alloy that is required to add the deficient weight of metal to the heat after the deadmelt oxidation losses have taken place.
- 1972, The Brown Boveri Review - Volume 59, page 273:
  Once the charge has melted and reached the pouring temperature the furnace is left to stand for a short time and then skimmed, after which the melt is sent for further treatment to a deadmelt and casting furnace, or cast direct.

dead-melt

動詞

dead-melt (三人称単数現在形 dead-melts, 現在分詞 dead-melting, 過去形および過去分詞形 dead-melted)

Alternative form of deadmelt
- 1890, The Encyclopaedia Britannica: A Dictionary of Arts, Sciences and General Literature, page 341:
  ...but if cast immediately it is found that a much larger quantity of gas separates during solidification, rendering the steel porous, than is evolved if the metal is dead-melted, i.e., allowed to remain melted for an extra half hour or more, presumably from the reaction of the iron oxide interspersed throughout the steel upon the carbon evolving carbon oxide during the earlier period...
- 1896, William Metcalf, Steel: A Manual for Steel Users, page 134:
  A crucible-steel maker who knows his business can, and he will, always dead-melt his steel.
- 1999, Transactions of the American Foundrymen's Society, →ISBN:
  However, most producers either dead-melt their heats or oxygen-blow to burn silicon.

名詞

dead-melt (複数形 dead-melts)

Alternative form of deadmelt
- 1881, Official Gazette of the United States Patent Office:
  ... thirdly, subjecting the molten metal, after the addition of carbon and silicon, to a dead-melt under a neutral flame until the silicon shall be oxidized to the required degree, substantially as and for the purpose specified.
- 1911, Eugene Franz Roeber, ‎Howard Coon Parmelee, Metallurgical & Chemical Engineering - Volume 9, page 273:
  From here to the finish there is practically a dead-melt in a reducing atmosphere.
- 1923, The Journal of the Iron and Steel Institute - Issue 2, page 58:
  It was his experience that it was advisable not to rely upon the deoxidising action of elements added at the end of the process, but to make certain of acquiring a satisfactory " dead-melt " in the furnace, and he had not obtained any appreciably better result from the addition of such elements as molybdenum and vanadium.

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