20-50kHz High Frequency Induction Furnace

The mechanical tilting medium-frequency melting furnace adopts IGBT inverter heating with a wide adjustable frequency range of 1-20KHZ. The electromagnetic stirring reduces impurities, and it saves over 20% more energy than silicon-controlled furnaces. With a hot furnace melting cycle of 20-30 minutes per batch, it is suitable for metal melting and pouring in foundries and scientific research institutions.

Melting Induction Furnace

20-50kHz High Frequency Induction Furnace

Inversion:Mechanical Tilting Medium - Frequency Melting Furnace
Energy-saving:at least 20% or more
Applications:Steel, stainless steel, copper, aluminum, gold, silver
Frequency range:1KHZ to 20KHZ
For a cold furnace:the melting time per batch is 50-60 minutes
for a hot furnace:the melting time per batch is 20-30 minutes.

Product Video

Product Description

 Main Specifications and Heating Capacity: The table below lists the maximum heating capacity of each melting furnace. For a cold furnace, the melting time per furnace is 50--60 minutes; for a hot furnace, the melting time per furnace is 20--30 minutes.

Main Applications and Features: 

★ The medium-frequency melting furnace is used for melting materials such as steel, stainless steel, copper, aluminum, gold, and silver. 

★ Medium-frequency melting has an excellent electromagnetic stirring effect, which is conducive to the uniformity of temperature and structure of the molten metal, facilitates slag floating, and reduces impurities. 

★ It has a wide frequency range, from 1KHZ to 20KHZ. The induction coil and matching compensation capacitor can be designed by comprehensively considering factors such as melting capacity, electromagnetic stirring effect, heating efficiency, and noise during operation to determine the output frequency. 

★ Compared with silicon-controlled medium-frequency furnaces, it saves energy by at least 20%.

★ The equipment is small in size and light in weight, with a melting capacity ranging from several kilograms to several hundred kilograms, providing a wide range of options. It is suitable for both factory production and small-volume melting in schools and research institutes.


ModelInput PowerOutput Voltage RangeInput SupplyOutput FrequencyDuty Cycle
AJ-1515 kW70–520 V3-phase 380V/50-60Hz200 Hz–20 kHz (adjustable)100% (continuous)
AJ-2525 kW70–550 V3-phase 380V200 Hz–20 kHz100%
AJ-3535 kW70–550 V3-phase 380V200 Hz–20 kHz100%
AJ-4545 kW70–550 V3-phase 380V200 Hz–20 kHz100%
AJ-7070 kW70–550 V3-phase 380V200 Hz–20 kHz100%
AJ-9090 kW70–550 V3-phase 380V200 Hz–20 kHz100%
AJ-110110 kW70–550 V3-phase 380V200 Hz–20 kHz100%
AJ-160160 kW70–550 V3-phase 380V200 Hz–20 kHz100%
AJ-240240 kW70–550 V3-phase 380V200 Hz–20 kHz100%
AJ-300300 kW70–550 V3-phase 380V200 Hz–20 kHz100%
AJ-500500 kW70–550 V3-phase 380V200 Hz–20 kHz100%

Key Features

  • Wide Frequency Range (1kHz–20kHz): Precisely adaptable to different workpiece sizes and melting depth requirements.
  • Dual-Control Resonance Technology: Independent power and frequency control with IGBT + amorphous inductor technology ensures optimal performance and stable melting.
  • Excellent Electromagnetic Stirring Effect: Promotes homogenous temperature and alloy consistency; facilitates slag removal and impurity separation.
  • High Efficiency & Energy-Saving: Over 20% more efficient than traditional thyristor (SCR) MF furnaces.
  • 100% Duty Cycle: Designed for 24/7 continuous operation with reliable cooling and power systems.
  • Compact Footprint: Lightweight and space-efficient; available in multiple capacities for flexible deployment.

Melting Capacity Reference Table

ModelSteel / Stainless SteelCopper / Gold / SilverAluminum
AJ-15 Furnace---10 kg3 kg
AJ-25 Furnace5 kg20 kg6 kg
AJ-35 Furnace10 kg30 kg10 kg
AJ-45 Furnace18 kg50 kg20 kg
AJ-70 Furnace25 kg100 kg30 kg
AJ-90 Furnace40 kg120 kg40 kg
AJ-110 Furnace50 kg150 kg50 kg
AJ-160 Furnace100 kg250 kg100 kg
AJ-240 Furnace150 kg400 kg150 kg
AJ-300 Furnace200 kg500 kg200 kg
AJ-500 Furnace300 kg300 kg

Cold start melting time: 50–60 mins per batch; Hot start: 20–30 mins


Customization & Support

we understand that each melting application is unique. That’s why we proudly offer tailor-made configurations to meet your specific process, capacity, and automation requirements — whether you're a research lab or an industrial manufacturer.

Contact us to configure your furnace with:

  • Graphite or silicon carbide crucibles
  • PID temperature control systems
  • PLC interfaces & IoT-ready monitoring
  • Water cooling systems
  • Vacuum or inert gas chambers (on request)
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Phone Phone:+86-13937922703
Email Email:luoyanganjing@gmail.com