The industrial frequency induction furnace is an induction furnace with an industrial frequency current (50 or 60 Hz) as the power source.
The industrial frequency induction furnace has been developed into smelting equipment with a wide range of uses.
It is mainly used as a melting furnace to smelt gray cast iron, malleable cast iron, ductile cast iron, and alloy cast iron. In addition, it is also used as a holding furnace. As before, the power frequency induction furnace has replaced the cupola as the main equipment for casting production.
Compared with the cupola, this kind of induction furnace has many advantages such as easy control of molten iron composition and temperature, the low combined amount of gas and inclusions in the casting, no pollution to the environment, energy-saving, and improved working conditions. Therefore, industrial frequency induction furnaces have developed rapidly in recent years.
An industrial frequency induction furnace is generally composed of a set of power supply and electrical control equipment and two furnaces, one for smelting and the other for standby. Each furnace is mainly composed of a furnace body, fixed frame, furnace cover mechanism, water and electricity introduction system, and hydraulic system.
The complete set of frequency induction furnace equipment includes four parts:
1. Furnace part
The furnace body of the frequency induction furnace for smelting cast iron consists of an induction furnace (two, one for smelting and the other for standby), furnace cover, furnace frame, tilting cylinder, furnace cover movable opening and closing device, etc.
2. Electrical parts
The electrical part is composed of a power transformer, main contactor, balancing reactor, balancing capacitor, compensation capacitor, and electrical console.
3. Cooling system
The cooling water system includes capacitor cooling, inductor cooling, and flexible cable cooling. The cooling water system is composed of a water pump, a circulating pool or cooling tower, and pipeline valves.
4. Hydraulic system
The hydraulic system includes oil tanks, oil pumps, oil pump motors, hydraulic system pipes and valves, and hydraulic consoles.
