| Description
| In order to let students understand all kinds of heat treatment operation and
make an observation to the organization of post-treatment, and make a
comparison to the change of mechanic property, the underlying tests shall be
made in order to observe its metallography: 1.The spark test of all kinds
of steel and iron materials. 2.The quenching, tempering and annealing treatment
and their mechanic property and organization comparison of structural carbon
steel and alloy steel. 3.Cementation treatment. 4.Electrolytic hardening test.
5.Juminy test. 6.The color judgment of heating temperture and the temperature
judgment practice of tempering color.
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