harvey process

1 definition found

harvey process - Collaborative International Dictionary of English v.0.48 :

  Harvey process \Har"vey proc"ess\ (Metal.)
     A process of hardening the face of steel, as armor plates,
     invented by Hayward A. Harvey of New Jersey, consisting in
     the additional carburizing of the face of a piece of low
     carbon steel by subjecting it to the action of carbon under
     long-continued pressure at a very high heat, and then to a
     violent chilling, as by a spray of cold water. This process
     gives an armor plate a thick surface of extreme hardness
     supported by material gradually decreasing in hardness to the
     unaltered soft steel at the back.
     [Webster 1913 Suppl.]