induction-harden

induction-harden
\\ ̷ ̷| ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷\ transitive verb
: to harden (a ferrous alloy) by heating above the transformation temperature by means of electromagnetic induction and then cooling as rapidly as necessary

Useful english dictionary. 2012.

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