1, Working principle
The medium frequency induction heating furnace for forging, also known as the medium frequency heating furnace, heats the bar material through electromagnetic induction to meet the temperature requirements, and then pushes the workpiece to the forging bed for forging. The principle is to convert 50HZ AC power into medium frequency (above 300HZ to 20K HZ) AC power, and then generate eddy currents in the workpiece inside the inductor through the resonance of capacitors and induction coils, causing the free electrons of the metal itself to flow in the resistive metal body and generate heat, thus achieving the heating effect. For example, placing a metal cylinder in an induction coil with alternating medium frequency current, the metal cylinder is not in direct contact with the induction coil, and the temperature of the coil itself is already very low. However, the surface of the cylinder is heated to turn red or even melt, and the speed of this turning red and melting can be achieved by adjusting the frequency and current strength.
2, The basic components of a medium frequency induction heating furnace for forging include:
Intermediate frequency power supply, intermediate frequency capacitor cabinet, induction heating furnace body, and feeding and discharging mechanism. According to the different objects we want to heat, we can design induction heaters in different shapes.
3, Advantages of medium frequency induction heating furnace for forging:
1. The heating rate is fast, so oxidation is extremely rare. The oxidation loss of forged parts heated at medium frequency is only 0.5%, the oxidation loss of gas furnace heating is 2%, and the oxidation loss of coal-fired furnaces reaches 3%.
2. Superior working environment, improved worker working environment and company image, pollution-free, and low energy consumption.
3. Uniform heating, minimal temperature difference between the core and surface, and high temperature control accuracy.
4. The intermediate frequency furnace has good energy-saving effect, less burning loss, and low energy consumption.
5. Fast heating speed, easy to achieve automation, and higher work efficiency.
4, Application Fields
1. Heating of round steel, square steel, round tube, square tube and various shaped workpieces.
2. Heating of various non-ferrous metals such as copper, aluminum, stainless steel, etc.
3. Heat treatment of various workpieces, such as quenching, annealing, normalizing, and tempering of mechanical metal parts (surface, inner hole, local, and overall) such as gears, machine tool guides, hardware tools, pneumatic tools, electric tools, hydraulic parts, ductile iron, automotive and motorcycle fittings, and internal fittings.
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