English Dictionary

Harvey process

固有名詞

A process for hardening the face of steel, involving the additional carburizing of the face of a piece of low-carbon steel by heaping a solid carbon-rich fuel (such as charcoal) on the face of the steel and then subjecting this to very high heat at high pressure for a prolonged period of time, followed by a violent chilling, as by a spray of cold water. This results in a thick surface of extreme hardness supported by material gradually decreasing in hardness to the unaltered soft steel at the back.

日本語の意味

ハーベイプロセス：低炭素鋼の表面に固体炭素（例：木炭）を多量に加え、非常に高温・高圧状態で長時間加熱した後、急激な冷却（例：冷水噴霧）を施して、鋼の表面に極めて硬い層を形成する表面硬化処理工程。 / 鋼の表面において、硬度の高い層を作り出すために、炭素の追加付加・加熱・急冷を組み合わせた特殊な熱処理法。

The Harvey process creates a thick, extremely hard face on low-carbon steel by heaping charcoal or another carbon-rich fuel on the surface, heating it at very high temperature under high pressure for a prolonged period, and then violently quenching it.

この表面浸炭と急冷による硬化法は、低炭素鋼の表面に木炭などの炭素を多く含む燃料を盛り、長時間にわたり高圧下で非常に高温に加熱してから激しく急冷することで、裏側の軟らかい鋼へと段階的に硬さが減少する厚い極めて硬い表面層を作り出します。

意味（1）

A process for hardening the face of steel, involving the additional carburizing of the face of a piece of low-carbon steel by heaping a solid carbon-rich fuel (such as charcoal) on the face of the steel and then subjecting this to very high heat at high pressure for a prolonged period of time, followed by a violent chilling, as by a spray of cold water. This results in a thick surface of extreme hardness supported by material gradually decreasing in hardness to the unaltered soft steel at the back.