A medium frequency induction heating furnace is a high-efficiency metal heating solution widely used in steelmaking, forging, and heat treatment industries. It uses intermediate frequency current to generate a powerful electromagnetic field, creating eddy currents inside metal materials. These eddy currents produce heat directly within the workpiece, achieving rapid, uniform, and energy-efficient heating.
How the Medium Frequency Induction Heating Furnace Works
The system is primarily composed of a frequency conversion unit and an induction coil. The frequency conversion unit transforms standard 50Hz AC power into adjustable intermediate frequency AC—typically between 100Hz and 10,000Hz. The process involves rectifying three-phase AC into direct current, then inverting it into the desired frequency.
When this intermediate frequency current flows through the induction coil, it produces high-density magnetic fields that penetrate and cut through the metal billet. The resulting magnetic induction and eddy currents cause the metal to heat evenly and efficiently.
Applications Across Metals and Industries
Medium frequency induction heating furnaces are highly versatile. They can be used for:
- Steel smelting – carbon steel, alloy steel, and special steels
- Non-ferrous metals – such as copper, aluminum, and precious metals
- Pre-forging heating in the forging industry
- Quenching and tempering in the heat treatment industry
With a maximum heating temperature of around 1,250°C, they deliver the performance required for precision manufacturing while minimizing energy waste.
Key Features and Benefits
1. Fast Heating with Minimal Oxidation
Heat is generated directly inside the workpiece via electromagnetic induction, reducing oxidation losses—ideal for high-quality forging where surface integrity matters.
2. Customizable Input and Output Options
The furnace can be paired with different feeding and discharging systems, including continuous or intermittent modes, tilting or straight discharge types—allowing tailored production setups.
3. Upgrade-Ready Design
Optional add-ons include automatic feeders, sorting systems, and closed-loop water cooling, enabling future capacity expansion without replacing the core system.
4. Enhanced Safety
Multiple safeguards—such as water temperature/pressure alarms and overheating alerts—ensure reliable operation and protect both equipment and operators.
5. Uniform Temperature Distribution
Advanced control systems keep the temperature difference between the billet core and surface extremely small, ensuring consistent product quality.
6. Low Energy Consumption
Heating one ton of forgings from room temperature to 1100°C requires less than 360 kWh, making it one of the most energy-efficient solutions in industrial metal heating.
The Ideal Choice for Modern Metal Processing
As the main equipment in casting, forging, and heat treatment workshops, the medium frequency induction heating furnace offers exceptional stability, reliability, and safety—critical factors for maintaining smooth production lines. With its compact size, high efficiency, and eco-friendly operation, it is rapidly becoming the preferred choice for global manufacturers seeking to upgrade from traditional fuel-based furnaces.
Partner with Luoyang Judian for Advanced Heating Solutions
Luoyang Judian specializes in designing and manufacturing medium frequency induction heating furnaces for diverse industrial applications. Our systems combine high performance, energy savings, and robust safety features to help manufacturers achieve greater productivity and lower operating costs.
If you’re looking for a reliable, high-efficiency metal heating solution, contact us today to discuss your production needs.
