Induction Steel Melting Furnace

How it works

cast iron, stainless steel, alloy steel and other ferrous metals. Widely applied in foundries, steel mills, metal recycling plants, machinery manufacturing, automotive parts production and small & medium-sized steel casting workshops. Ideal for both batch production and small-batch, high-quality steel smelting.

An induction furnace melts by putting the metal inside the magnetic field of a coil. Alternating current in the coil induces currents in the charge itself, so the metal heats from the inside out and the melt is stirred electromagnetically as it forms. There is no flame and no combustion gas in contact with the metal, which is why losses and gas pickup are lower than in a fuel-fired furnace.

Frequency sets the character of the melt. Medium frequency couples efficiently into a charge of mixed piece size and gives the stirring that homogenises alloy, while higher frequency concentrates power into smaller volumes. Power supply, coil, capacitor bank and cooling are designed as one system — changing furnace size without changing the power pack is what produces disappointing melt rates.

Key features

• High Efficiency & Energy Saving: Adopts IGBT power module, 70–85% electro-thermal conversion efficiency; melts 10kg–20T steel in 40–60 minutes per batch, saving 30–50% energy vs. gas/oil furnaces
• Precise Temperature Control: Digital PID + PLC control, temperature accuracy ±10℃, max temp up to 1700℃; ensures uniform steel composition with electromagnetic stirring
• Clean & Eco-Friendly: No open flame, no CO₂/dust emissions; minimal oxidation loss (<1.5%) and less slag, improving metal yield
• Safe & Reliable: Multi-protection (over-current, over-voltage, water pressure/temp alarm, leakage protection); zero-voltage soft start, 24h continuous operation available
• Flexible & Easy Operation: Tiltable design (manual/hydraulic tilt); cold furnace start & full discharge possible; quick metal type switch (steel → iron → alloy)
• Durable & Low Maintenance: Heavy-duty steel/aluminum shell; refractory crucible with long service life; modular structure for easy repair

How to choose induction melting

• Start from the pour weight and the melt time you need, then work back to installed power; furnace capacity alone tells you the crucible volume, not the melting rate.
• Check the transformer and the supply you have. A furnace that needs more kVA than the site can deliver is a site upgrade, not an equipment purchase.
• Decide on tilt arrangement (hydraulic or manual), because it determines the pouring layout and the ladle handling around the furnace.
• Plan cooling as part of the package. Closed-loop cooling is what allows the power supply to run continuously without depending on the local water quality.

Technical data

Specifications are indicative for the model family and are confirmed against your material in the quotation. Wear parts, power supply and control options are listed per project.

Frequently asked questions