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Manufacturing:
Surface Finishing
Heat
Treatment - Tempering
Tempering is carried out
by preheating previously quenched or normalized
steel to a temperature below the critical
range, holding, and then cooling to obtain
the desired mechanical properties. Tempering
is used to reduce the brittleness of quenched
steel. Many products that require hardness
and resistance to breakage are quenched
and tempered. The temperature chosen for
the tempering process directly impacts the
hardness of the work piece . The higher
the temperature in the tempering process,
the lower the hardness.
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