Steel mills and metallurgy plants expose brakes to high ambient temperatures, heavy loads, shock, abrasive dust, and often scale or oil mist. A suitable brake must provide high torque with stable friction at elevated temperatures, resist fade, and tolerate harsh contamination. Mechanical robustness is critical: pins, bushings, and housings must withstand vibration and impact without losing alignment or clearances.
Friction material selection is especially important. Semi-metallic or sintered linings are often preferred for higher heat resistance and durability, though disc/drum wear must be considered. Sealing and corrosion protection also matter, particularly where cooling water spray or humidity is present.
Additionally, maintenance access is a practical requirement. In mills, downtime is expensive, so brakes should allow rapid inspection and replacement of wear parts. For safety-critical cranes (e.g., ladle cranes), redundancy and fail-safe design are essential. Finally, ensure the brake and actuator can handle the duty cycle—frequent starts/stops and emergency scenarios generate significant heat that must be dissipated without degrading performance.
