mostly is the hardening done by induction hardening machine, I
know also manufactures that do this using the flame hardening
method.
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in my opinion surface hardening is applied only on the surface
while the true hardening is applied in the whole part of the
metal....
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what the was on tooth hardening day?
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Arteriosclerosis is hardening of the arteries.
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Case hardening, also referred to as surface hardening is the
process of hardening a surface of a metal. It is done by surfacing
the metal surface with a layer of metal on top of it, in order to
harden it.