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The electric furnace is the vertical vacuum resistance furnace, it is composed by the furnace stack, the bung, the vacuum system, the electrical system and the water-cooling
system.
The furnace stack uses the water cooling sandwich structure, the bung may borrow spring strength opening.On the furnace body is equipped with two observation windows, may observe
the work piece heating the situation.
In the furnace is loaded with the graphite electrode, it was by two semicircles which insulated mutually is composed longitudinally opens several with the graphite heating element
in it to seal thin, increased the resistance, and caused the heating element to be possible by an end circular telegram, but other end when heating permitted the free expansion
Heating element periphery has the multi-layered heat shield installment, it assembles is being advantageous for together takes outside drawing a charge.The vacuum system is by
proliferates the pump, the mechanical pump as well as the vacuum valve and so on is composed.The vacuum survey uses the thermo-couple suction gauge or the ionization vacuum
gauge.The electrical system by the silicon-controlled rectifier voltage regulator, the low voltage transformer and the control cubicle is composed.
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