Induction furnace is a power supply device that converts 50 Hz AC power into medium frequency (from 300 Hz to 1000 Hz). The furnace provided by induction furnace suppliers, converts three-phase AC power into DC power after rectification, and then converts DC power into adjustable medium frequency current to supply the medium frequency AC current flowing through the capacitor and induction coil, generating high-density magnetic lines in the induction coil and cutting the metal material contained in the induction coil, generating large eddy currents in the metal material.
When looking for a reliable induction furnace manufacturer, it is crucial to consider the quality and efficiency of the power supply device. A reputable induction furnace manufacturer/supplier ensures that their devices are designed to provide consistent and efficient conversion of AC power to medium frequency current. This guarantees optimal performance and longevity of the induction furnace.
Electric arc furnace is an electric furnace that uses the high temperature produced by electrode arc to melt ores and metals. When gas discharge forms an arc, the energy is very concentrated, and the temperature of the arc zone is above 3000 ℃ C. For metal smelting, electric arc furnaces have greater flexibility in the process compared to other types of furnaces in steel making, effectively removing impurities such as sulfur and phosphorus. The furnace temperature is easy to control, and the equipment occupies a small area, making them suitable for the melting of high-quality alloy steel.
Electric arc furnace: It is a large volume, usually weighing over 3 tons, and is only used by enterprises with a certain scale. The steel it produces is relatively pure.
Medium frequency furnace: Compared to electric arc furnaces, steelmaking has a lower cost and is suitable for use by small and medium-sized enterprises. The steel produced is high in impurities and carbon content, so the steel produced is impure.
The electric arc furnace China-type uses power frequency electricity.
The medium frequency electric furnace uses medium frequency electricity.
Electric arc furnaces have low thermal efficiency, low productivity, cumbersome operation, and high energy consumption.
The intermediate frequency furnace has high efficiency and thermal efficiency, thus achieving high production efficiency, flexible operation, and low energy consumption.
The heating methods of the two are different, resulting in different temperatures and efficiency.
The VIP series inverter power supply produced by our company has huge advantages in energy conservation compared to traditional KGPS parallel inverter intermediate frequency power supply. This furnace auxiliary equipment can save huge energy consumption in terms of power factor, filtering and smoothing method, and power distribution method.
Newly developed DFI intermediate frequency power supply combines the advantages of IGBT and SCR series inverter technology, making the equipment more energy-efficient and stable.
The new steel shell electric furnace body includes: open or closed furnace body, furnace frame, cyclone or annular dust removal cover, furnace cover, tilting furnace oil cylinder, induction ring, magnetic knob, furnace mouth and bottom pouring block. A complete set of stainless steel water inlet distributor, easy to maintain, with a simple and sturdy structure. The new type steel shell electric furnace body has advantages such as better material usage, more reasonable structure, and built-in dust removal cover and hydraulic furnace cover compared to the old type furnace body.
| Item | Typical Value / Range | Remarks |
| Furnace Type | Coreless Induction Furnace (Steel Shell / Aluminum Shell) | Most common for ferrous & non-ferrous melting |
| Rated Capacity | 0.1 T ~ 50 T+ (100 kg ~ 50,000 kg) | Liquid steel capacity per batch |
| Rated Power | 100 kW ~ 26,000 kW | Scales with capacity (e.g., ~750kW for 1T, ~4000kW for 5T) |
| Working Frequency | 50 Hz (Line frequency) / 150 Hz ~ 1,000 Hz (MF) | Lower frequency for larger capacities; Higher for smaller |
| Rated Input Voltage | 380 V / 660 V / 1,000 V / 3,000 V / 6,000 V / 10,000 V | Matches plant grid or step-down transformer |
| Transformer Capacity | 160 kVA ~ 31,500 kVA+ | Supplies the rectifier/induction power unit |
| Operating Temp. | 1,450 °C ~ 1,750 °C (Steel) / up to 2,200 °C | Depends on material (Iron, Steel, Cu, Al, Precious metals) |
| Melting Rate | 0.1 t/h ~ 35 t/h | Time to melt a full batch (e.g., ~60 min for 5T cold start) |
| Power Consumption | 510 ~ 850 kWh/t | Larger furnaces are more efficient (lower kWh/ton) |
| Crucible / Lining | Acidic (Quartz Sand), Basic (Magnesia), Neutral (Alumina) | Poured or dry vibratable refractory |
| Coil Type | Water-cooled Copper Tube (Helical) | Multi-turn, high current carrying capacity |
| Magnetic Yoke | Silicon Steel Lamination | Concentrates magnetic field, supports coil, reduces heating |
| Tilting Mechanism | Hydraulic / Electric / Manual | Hydraulic is standard for >1T; for pouring molten metal |
| Cooling System | Closed-loop water cooling (Heat exchanger + Tower) | Required for coil, power supply, cables; Flow: 5~60+ m³/h |
| Leak Detection | Coil Leak Alarm System (Stray current / Electrode method) | Critical safety feature to prevent molten metal breach |
| Control System | PLC + HMI / Industrial PC | Auto power control, data logging, fault diagnostics |
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