Our new hydraulic rotation retainer (HRR) for AOD converter tilt drives substantially reduces the vibrations of the vessel, gear box, and foundations. That means no more maintenance of torque supports and bearings. You also benefit from the much longer service life of your gears and bearings.
Reliability upgrade with hydraulic rotation retainer
Decoupling of the converter from the foundations during blowing results in significantly longer equipment lifetimes.
- Active damping of vibrations.
- Elimination of damage to spherical plain bearings.
- Reduced loads on foundations and mechanical equipment (old: up to 1,000 kN; new: about 200 kN).
During blowing, both chambers of each hydraulic cylinder are connected by an adjustable choke valve and act as dampers. The converter is able to perform a free damped movement. Then, during tilting, one cylinder is blocked while the other is flushed.