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

How to use oil hardening in a sentence

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

    Getting Gold | J. C. F. Johnson