Induction Heating System for Metallurgy

In the metallurgy industry, medium-frequency induction furnaces are widely applied in metal smelting, alloying, refining, and short-process steelmaking, providing a clean, efficient, and highly controllable melting solution. Dinghong's induction systems convert industrial-frequency AC into medium-frequency current to create an alternating magnetic field in the induction coil. This field induces strong eddy currents inside the metal charge, generating heat directly within the material. As a result, melting is fast, temperature rise is stable, and energy is utilized efficiently, supporting both productivity improvement and operating cost reduction.

For smelting and remelting operations, medium-frequency induction furnaces are suitable for cast iron, cast steel, stainless steel, and many non-ferrous metals such as copper and aluminum alloys. Precise power regulation enables accurate temperature control and flexible batch production, while electromagnetic stirring promotes uniform heat distribution and composition consistency. This is particularly valuable in alloying, where stable temperature and effective stirring help improve alloy element dissolution and recovery, enabling tighter chemical control and more reliable mechanical performance in final products.

In refining processes, induction melting offers "clean heat" without combustion contact, helping reduce contamination risks and improving melt cleanliness. With proper slag practice, it supports deoxidation and impurity control, contributing to fewer inclusions and more stable metallurgical quality. Medium-frequency induction furnaces are also well suited to short-process steelmaking and recycling-based metallurgy, thanks to fast start/stop capability, strong adaptability to varying charge materials, and reduced environmental impact compared with fuel-fired equipment.

Supported by Dinghong's advanced power technologies—including 12-pulse rectification tandem systems and energy-saving inverter solutions—our furnaces feature high efficiency, reduced harmonics, stable output, safe operation, and easy control. With reliable performance and flexible configuration, Dinghong helps metallurgical customers achieve greener production, consistent quality, and higher overall melting efficiency.