In the landscape of industrial metalworking, traditional used cold rolling mill systems face critical limitations in speed, precision, and versatility. Our 1450mm Reversible Rolling Mill redefines performance standards with its High-Speed Reversible Mill architecture—combining 800 m/min rolling velocity, bidirectional processing, and micron-level tolerances for EV, aerospace, and energy sectors.
Table: Dominant Capabilities vs. Legacy Systems
3.1 Tiered Roll Geometry
Work Rolls: Ø280 mm × 1450 mm body + 2641 mm neck (deflection <0.003 mm at 800 m/min)
Intermediate Rolls: Ø390 mm × 1390 mm body + 3530 mm neck (40% lower bearing stress)
Backup Rolls: Ø1150 mm × 1410 mm body + 3288 mm neck (absorbs 12,000 kN force)
Neck Length Engineering: Extended dimensions (2641–3530 mm) enhance rigidity critical for 0.15 mm EV battery foils.
3.2 Mill Housing & Dynamics
590×620 mm Housing Window: Enables roll changeovers ≤45 min (vs. 120+ min on used cold rolling mill).
±0.05 mm Roll Alignment: Laser-guided parallelism maintenance under thermal loads.
4.1 Multi-Motor Synchronization
Recoiler System: 4×1350 kW motors (5,400 kW total) with dynamic tension balancing (±0.3%).
Main Drive: 2×1350 kW motors (2,700 kW) with vector control for 800 m/min acceleration.
Regenerative Braking: Recaptures 18% energy during deceleration (11 sec full stop).
4.2 Reversible Operation Advantages
Bidirectional Processing: Achieves 95% material utilization in 8-pass reductions (e.g., 3.0 mm → 0.3 mm titanium).
Direction Switch Time: <1.5 sec (eliminates strip flutter via AI tension prediction).
Flatness Control: ≤3 I-units across 1450 mm width (adaptive crown compensation).
Thermal Stability: Roll cooling jets maintain ΔT ≤8°C at 800 m/min.
Emergency Response: SIL-3 certified stop system (1.2 m/s² deceleration).
Precision Metrics: ±0.002 mm thickness stability for 0.23 mm silicon steel.
7.1 Productivity & Uptime
Speed Flexibility: 5 m/min (heavy reductions) to 800 m/min (thin gauges).
Scrap Reduction: <0.5% head/tail loss vs. 3–8% in used cold rolling mill lines.
Predictive Maintenance: Vibration sensors detect bearing wear 200h pre-failure.
7.2 Retrofit Solutions
Reversible Operation Kits: Convert unidirectional used cold rolling mill to bidirectional processing.
Drive Upgrades: Integrate regenerative braking (cut energy costs 22%).
Throughput Gain: 150 tons/hr at 800 m/min (vs. 50 tons/hr legacy systems).
Quality Premium: 30% higher pricing for aerospace-grade tolerances.
Payback Period: 18 months at 10,000-ton/month production.
