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oil hardening

noun

  1. a process of hardening high-carbon or alloy steels by heating and cooling in oil Compare air hardening
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Example Sentences

To prevent lubricating oil hardening upon the parts of the machinery when in use, add a third part of kerosene.

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