焼やき入いれ

noun

quenching; hardening; tempering

Metalworking term for rapid cooling of heated metal to increase hardness. Often used in the context of steel treatment.

• 鋼はがねの焼やき入いれは、硬こう度どを上あげるために行おこなわれる。

  Quenching of steel is performed to increase its hardness.

• 焼やき入いれした刃は物ものはよく切きれる。

  A quenched blade cuts well.