1. Core Technical Specifications
- Power Rating:25 kilowatts (kW), suitable for medium-small batch metal heating, reducing energy consumption by 20%-30% compared to traditional resistance furnaces.
- Frequency Range:High-frequency (HF, typically 30-100 kHz), enabling rapid heating via electromagnetic induction with a temperature rise rate of 50-100ºC/s.
- Heating Efficiency:Thermal conversion efficiency exceeds 90%, with melt temperature uniformity controlled within ±15ºC.
2. Working Principle
Leverages the electromagnetic induction eddy current effect:
- The HF power supply generates an alternating magnetic field penetrating the metal workpiece.
- Eddy currents induced in the metal convert to heat due to resistive losses.
- Heat rapidly conducts to melt the metal (e.g., achieving liquefaction at copper's melting point of 1083ºC or aluminum's 660ºC).
3. Applications in Metal Melting & Casting
- Melting Scenarios:
- Non-ferrous metal smelting: Pure copper, aluminum alloys, zinc alloys (single melt volume ~5-20 kg);
- Precious metal processing: Melting and refining gold, silver for jewelry.
- Casting Processes:
- Gravity casting: Manufacturing Forging Blank for mechanical parts (e.g., pump bodies, valves);
- Investment casting (precision casting): Suited for complex structures (e.g., medical device components).
4. Equipment Advantages
| Feature |
Benefit |
| Flameless heating |
Reduces oxidation loss rate (metal loss ≤1%) and improves melt purity. |
| Precise temperature control |
Integrated with PLC intelligent system, enabling staged heating per process curves (preheating→holding→superheating). |
| Modular design |
Split structure (power cabinet + induction coil) facilitates on-site installation and maintenance; coils can be customized for different furnace types. |
| Environmental & energy-efficient |
No exhaust emissions, saving >50% energy compared to fuel furnaces, compliant with ISO 14001. |
5. Industrial Implementation
- Typical configurations:
- Induction coil material: Oxygen-free copper (purity ≥99.9%) with nickel-plated surface for oxidation resistance;
- Cooling system: Pure water circulation (water temp ≤35ºC) ensures 24/7 continuous operation.
- Industry case:
- An aluminum die-casting factory using this equipment shortened melting time from 40 minutes (traditional resistance furnace) to 12 minutes, tripling daily capacity.
6. Technical Extensions
- Can integrate inert gas protection for melting reactive metals like titanium alloys;
- Compatible with robotic loading systems for automated melting-casting production lines;
- Frequency-tunable models (20-80 kHz) adapt to different metal thicknesses (e.g., higher frequencies for thin sheet annealing).
Summary:This equipment achieves efficient, precise, and eco-friendly heating in medium-small batch metal melting and precision casting through HF electromagnetic induction, ideal for scenarios requiring high energy efficiency and process stability.
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