The rolling heating furnace is a medium-frequency induction heating unit specifically designed to support the variable cross-section rolling of automotive leaf springs and control arms. As the core thermal station within the rolling production line, it handles the rapid and uniform preheating of steel billets prior to entry into the rolling mill.
Based on medium-frequency induction heating principles, the furnace requires no preheating and is ready for immediate operation. It delivers fast temperature ramp-up, uniform through-heating, minimal scale formation, and reduced decarburization — producing workpieces with superior surface condition compared to conventional gas or resistance furnace heating.
A real-time in-furnace scanning and closed-loop temperature control system dynamically monitors workpiece temperature throughout the heating cycle, ensuring consistent discharge temperature and effectively preventing overheating defects — safeguarding rolling quality at the source.
The unit interfaces directly with the rolling line's control system, enabling precise synchronization between heating and rolling cycle times for fully automated unit operation, minimizing inter-process wait times and heat loss, and maximizing overall line efficiency.
With a compact footprint, low thermal radiation, and no open flames or fume emissions, the furnace creates a clean and safe working environment. Digital phase-lock technology enables automatic frequency tracking and seamless adaptation to different induction coil specifications, simplifying operation and maintenance.
Significant energy savings over conventional heating equipment, combined with high thermal efficiency and low overall operating cost, make this furnace well-suited to continuous hot-rolling production of leaf springs, control arms, and other high-volume automotive components across multiple specifications.