This guide arm ear heating furnace is a medium-frequency induction heating unit purpose-designed for the eye-curling operation of automotive control arm (guide arm) ends. As the upstream thermal station ahead of the eye-curling forming press, it delivers fast, precise localized heating of the arm ends, preparing workpieces with uniform temperature and sufficient softening for smooth and accurate forming.
Based on medium-frequency induction heating principles, the furnace requires no preheating and is ready for immediate operation. It heats the control arm end to the required forming temperature within seconds, with the heat-affected zone precisely confined to the end section — fully preserving the metallurgical structure and mechanical properties of the workpiece body.
Induction coils are custom-designed to match the end profile and cross-sectional dimensions of each control arm specification, concentrating heat uniformly within the target zone. This ensures consistent and thorough softening of the material, providing a stable thermal foundation for mechanical eye-curling and eliminating the risk of cracking or dimensional deviation caused by localized cold spots.
Two configurations are available: a standard induction heating furnace suited to stable, continuous production cycles with a straightforward structure, and a heat-accumulation induction heating furnace that stores thermal energy during heating intervals to reduce per-cycle energy consumption — particularly well-suited to production environments with higher overall efficiency requirements.
The furnace incorporates digital phase-lock technology for automatic frequency tracking, seamlessly adapting to different induction coil specifications. Operating without high-voltage hazards, it runs continuously and safely for 24 hours. Significant energy savings over conventional heating methods, combined with low thermal radiation and a clean working environment, align with modern green manufacturing standards.