Guide arm heat treatment production line is purpose-built for the full-body heat treatment of automotive control arms (guide arms), integrating medium-frequency induction heating, through-hardening quenching, and tempering into a fully automated, coordinated workflow that meets the stringent demands for high strength, fatigue resistance, and dimensional stability required of control arms in automotive suspension systems.
The core heating unit employs medium-frequency induction technology, delivering fast temperature ramp-up and uniform heating throughout the workpiece body in minimal time. Surface oxidation and decarburization are effectively suppressed, ensuring good surface condition after heat treatment and providing a thermally uniform workpiece with consistent microstructure ahead of the quenching stage.
Induction coils are custom-designed to match the geometry and cross-sectional characteristics of each control arm specification, enabling precise control over the hardened zone and hardening depth. The resulting parts retain a substantial tough core beneath the hardened surface, with favorable compressive residual stress that significantly enhances fatigue resistance and fracture toughness, extending service life.
A closed-loop infrared temperature monitoring and control system dynamically tracks discharge temperature in real time, maintaining high process accuracy and preventing overheating. This ensures stable and consistent heat treatment parameters across every production batch, safeguarding finished product quality at the source.
The fully automated line integrates workpiece conveyance, induction heating, quench cooling, and tempering in a smoothly sequenced and stable-cycle workflow. Energy savings of approximately 60% over conventional heating methods, combined with no high-voltage hazards, low thermal radiation, and a clean operating environment, support continuous 24-hour production with high reliability.