Last Updated：2025/11/29
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.
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Harvey process
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Source Word
Harvey process
Proper noun
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.
Japanese Meaning
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。
Sense（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.
