Luoyang Anjing Intelligence Equipment are a global leader in high-temperature electric furnaces

70kW Medium-Frequency Power Supply
PRODUCT PARAMETERS
- Model:AJ-70
- Power Output:70 Kw
- Smelting process:Pyrometallurgy
- Furnace lining type:Acidic
- Operation mode::Melting
- Category:Medium-frequency electric furnace
Description
70kW Medium-Frequency Induction Heating Power Supply
This 70kW medium-frequency induction heating power supply utilizes IGBT series resonant technology and operates within a frequency range of 1–20 kHz. It is suitable for processes such as metal welding, melting, heat treatment, and shrink fitting.The complete system comprises the main unit, compensation capacitors, and an induction coil. It features rapid heating, high efficiency, stable operation, and ease of maintenance.
It is primarily used for welding or melting gold, silver, copper, aluminum, iron, and their alloys.
Product Features
- High-Efficiency Melting and Welding Capabilities
Designed for metals such as gold, silver, copper, iron, and aluminum, the unit melts a batch in just 20–30 minutes. During welding, the solder melts uniformly, creating strong, reliable joints—ideal for small, precision workpieces.
- Rapid Medium-Frequency Heating
Utilizing 1–20kHz medium-frequency induction heating, it achieves rapid heating, high thermal efficiency, and significantly shortens the processing cycle.
- Comprehensive Safety Protection
Features built-in overcurrent and overvoltage protection; the system automatically shuts down during abnormal operation to safeguard the power module and ensure operator safety.
- Compact and Portable Design
With a footprint of less than 1 square meter, the compact unit offers flexible mobility and deployment, making it particularly suitable for space-constrained laboratory research environments and small-scale metal processing facilities.
- Modular Capacitor Compensation
Equipped with an independent compensation capacitor unit that provides capacitive compensation for the induction coil, thereby improving the power factor and reducing reactive power loss.

| Feature | Description |
|---|---|
| 1. Power Structure | Series-resonant inverter topology using IGBT/MOSFET technology |
| 2. Frequency Range | 1–20 kHz, ideal for forging, melting, annealing, surface hardening |
| 3. Capacitor Box | Provides capacitive compensation for inductive load, improves power factor |
| 4. Induction Coil | Acts as both inductor and heating element, typically made from 3–10m copper tubing |
| 5. High Efficiency | Operates at resonance point for maximum energy transfer and minimal losses |
| 6. Compact System | Integrated MF power + capacitor + coil makes it easy to deploy and maintain |
| 7. Application Flexibility | Suitable for melting, hot fitting, sintering, forging, spraying & more |
Application Areas
- Precious Metal Melting: Melting precious metals such as gold and silver in laboratories or small workshops for jewelry making or sample production
- Small-scale Ferrous/Non-ferrous Metal Melting: Rapid, small-batch melting of copper, aluminum, and iron for casting or alloy testing
- Precision Welding: Brazing and fusion welding of small metal components, such as electronic component leads and precision instrument parts
- Laboratory Research: Metal heating, melting, and thermal property testing in materials science and metallurgical engineering
- Thermal Assembly: Heating small bearings, gears, and bushings for expansion-fit assembly
- Heat Treatment: Annealing and surface hardening of small workpieces
Company Profile
A professional enterprise specializing in heat treatment technology services and the R&D, manufacturing, and sales of high-temperature electric furnaces.
The company focuses on developing high-temperature electric furnaces covering a full temperature range of -100℃ to 2600℃. Its products include experimental electric furnaces, vacuum atmosphere furnaces, industrial kilns, and medium-frequency induction heating equipment. Main products include box furnaces, tube furnaces, lifting furnaces, pusher kilns, bogie furnaces, rotary kilns, tunnel kilns, and various specialized medium-frequency furnaces.
The company adheres to technological innovation and has passed ISO9001 and EU CE certifications. It owns 21 registered trademarks, 29 patents, and 27 software copyrights.






Payment Methods
TT
Shipment Methods
The electric furnace is packaged in three layers: first wrapped in foam paper, then wrapped in plastic film, and finally packed in a wooden crate.
Frequently Asked Questions (FAQ)
- Can the induction coil be customized?
Yes. Induction coils can be designed and manufactured according to the workpiece’s dimensions, shape, and specific process requirements to ensure optimal heating results.
- What is the equipment’s operating frequency range?
The standard operating frequency range is 1–20 kHz, capable of meeting the needs of various processes such as melting, welding, forging, and heat treatment.
- How long does a single melting cycle take?
The exact duration depends on the type of metal, the capacity, and the initial temperature. Generally.
- What heating principle does the equipment use?
It utilizes the principle of electromagnetic induction to generate eddy currents within the metal, enabling rapid, non-contact heating.
- What safety protection features does the equipment have?
Standard features include over-current protection, over-voltage protection, water-shortage protection, over-temperature protection, and fault alarms, ensuring stable, long-term operation.

















