Process Introduction of Steel Billet Induction Heating Machine

The core heating principle follows electromagnetic induction and Joule heat generation. The medium frequency induction heating power supplyconverts industrial frequency alternating current into adjustable medium-frequency current, which forms a closed alternating magnetic field through the water-cooled induction coil. When the room-temperature steel billet passes through the magnetic field range, dense eddy currents are induced inside the metal body. Relying on the inherent resistance of steel materials, the eddy currents quickly convert electric energy into thermal energy, realizing rapid self-heating from the inside to the surface of the billet. In the heating stage above the Curie point of steel, the magnetic permeability of the billet tends to be uniform, which effectively eliminates the temperature difference between the surface and the core, and ensures the overall heating uniformity of the steel billet.

This heating process has prominent technical advantages in industrial production. Compared with traditional flame heating, induction heating requires no combustion-supporting gas, completely avoids flue gas and dust pollution, and meets environmental protection production standards. Meanwhile, the internal heating mode greatly shortens the heating cycle, significantly reduces the oxidation scale and decarburization layer on the billet surface, and effectively improves the yield and surface quality of finished steel products. In addition, the equipment features low energy consumption, high thermal efficiency and compact layout, which can effectively reduce production and site costs for enterprises.

Medium frequency induction heating system

In actual industrial applications, this process is suitable for round steel, square steel and special-shaped steel billets of various specifications, covering mass production scenarios such as automobile mechanical parts forging, steel bar hot rolling, seamless steel pipe extrusion and special steel profile processing. With stable operation and precise process control, it provides reliable temperature guarantee for subsequent metal forming and improves the overall consistency and qualification rate of steel processing products.