Answer:
Heat treatment is generally performed in the following ways:
☛ Normalizing
☛ Annealing
☛ Spheroidising
☛ Hardening
☛ Tempering
☛ Surface or case hardening
☛ Normalizing
☛ Annealing
☛ Spheroidising
☛ Hardening
☛ Tempering
☛ Surface or case hardening
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