Induction Heating System for Heat Treatment

Medium-frequency induction heating equipment is widely used in heat treatment because it enables rapid, uniform, and precisely controllable heating of metal workpieces through electromagnetic induction. By converting industrial-frequency AC into medium-frequency current, Dinghong systems generate an alternating magnetic field in the induction coil, inducing eddy currents within the workpiece so that heat is produced directly inside the metal. This "internal" heating mechanism delivers fast response, high energy efficiency, and excellent repeatability—key requirements for modern heat-treatment production.

Dinghong induction solutions are suitable for a broad range of processes, including surface hardening (induction quenching), tempering, annealing, normalizing, preheating before welding or forging, and localized stress relieving. For parts such as gears, shafts, bearings, rails, pipe ends, and automotive components, induction heating allows selective heating of specific areas, achieving controlled hardening depth and consistent microstructure while minimizing deformation and reducing the risk of overheating adjacent regions. Compared with conventional furnace heating, induction heat treatment typically shortens cycle time, reduces oxidation and decarburization, improves dimensional stability, and supports cleaner production with lower emissions.

To meet different production needs, Dinghong equipment can be configured for single-station or continuous operation and integrated with automated fixtures, conveyors, quench systems, and infrared temperature measurement. Precise power control and programmable process recipes help ensure stable temperature curves and consistent metallurgical results across batches. This improves product quality, reduces scrap, and enhances overall manufacturing efficiency.

Supported by Dinghong's advanced power-supply technologies—such as 12-pulse rectification tandem systems and energy-saving inverter solutions—our induction heating equipment provides stable output, reduced harmonics, high efficiency, and safe, easy operation. With compact installation, strong adaptability to different workpiece sizes and materials, and reliable long-term performance, Dinghong induction heat-treatment solutions help customers achieve higher productivity, better quality control, and greener manufacturing.