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When processing large-diameter cylinders, both lower rollers can synchronously expand outward horizontally, increasing the lower roller support span. Advantages: Expands plate support area to effectively support wide thick steel plates and suppress mid-section sagging; longer force distribution for smoother forming curves and improved full-length arc consistency; achieves both end pre-bending (contracted) and large-diameter continuous rolling (expanded) in one machine.
Upper roller with high-torque hydraulic motor + two lower rollers independently equipped + planetary reducers, three-roll synchronized drive. Advantages: Wide thick plates have high self-weight and require large friction force; full-drive structure prevents plate slippage and local stagnation; low-speed high-torque stable output suitable for high-strength steel and wide thick plate multi-pass gradual bending with uniform rolling speed and continuous cylinder circumference forming.
Work rolls use high-quality alloy steel integral forging, quenched and tempered + deep induction hardening; roll diameter enlarged for large-span wide plate conditions with inherently stronger rigidity. Standard multi-point support roller system / CNC dynamic deflection compensation device. Multi-point support rollers counteract mid-roll deflection in real-time during wide plate rolling, solving the industry problem of "insufficient mid-cylinder arc" and ensuring uniform curvature along plate width to meet wind power and pressure vessel roundness standards.
Relying on horizontally adjustable lower roller structure, single clamping completes both-end pre-bending without frequent flipping and transport. For large-size steel plates: effectively controls residual straight edges at ends, reducing subsequent cutting allowance; eliminates multiple lifting operations for ultra-long plates, reducing lifting deformation risk and improving material utilization.
Entire machine adopts thick steel plate box-type welded structure with complete integral stress relief annealing; main beam and column structures optimized through finite element simulation with enlarged structural safety margin. Large-diameter cylinder forming generates continuous, enormous radial reaction forces; strengthened frame can withstand long-term alternating loads without permanent deformation, maintaining long-term precision stability.
EZHONG self-developed closed-loop CNC system with built-in springback database for carbon steel, vessel plate, and high-strength steel (Q345R, P355NL, DH36, etc.). Operator inputs plate thickness, width, yield strength, and target cylinder diameter; system automatically calculates upper roller downstroke, lower roller horizontal position, and rolling passes. Supports multi-pass gradual forming process for large-diameter cylinder gentle bending; program storage and remote diagnostics available with MES connectivity. Equipped with automatic plate centering device to eliminate wide plate axial deviation and reduce cylinder joint misalignment.
The machine's defining innovation: each lower roller can move independently horizontally, generating any desired pitch. The upper roller features vertical movement controlled by dedicated hydraulic cylinders.
Precision Metrics: Center Distance Adjustment: <2s | Positioning Accuracy: ±2mm | Synchronization: ±0.2mm across plate width
Unique hydraulic design with smooth unloading at high pressure levels, preventing workpiece bounce and eliminating harmful "water hammer" effects on hydraulic pipelines.
All three working rollers are main drive rollers. Upper roller driven by single hydraulic motor through planetary reducer; lower rollers each driven independently through dedicated planetary reducer systems.
Specialized tilt mechanisms on both upper and lower bearing seats enable tapered shell production.
Integrated Siemens PLC + industrial touch screen, equipped with self-balancing algorithm for full automatic rolling.
In the production of large-diameter thick-plate cylinders , traditional plate rolling machines face multiple challenges in the manufacturing process.
High-strength stress-relieved steel plate, CNC finish, rigid frame without deflection under 8000T load, horizontal accuracy ±0.5mm full length.
42CrMo forged rollers, mirror polished Ra≤0.4μm, hot rolling version withstands 300°C continuous working temperature.
Variable displacement plunger pump, independent proportional valve control, 2500-4500L oil capacity, 10μm precision filtration.
Siemens S7-1200 PLC, 7-inch bilingual touch screen, LVDT high precision position sensor, IEC standard circuit protection.
| Model | Plate Width (mm) | No Pre-Bend (mm) | Pre-Bend (mm) | Main Motor Power (kW) | Rolling Speed (m/min) | Dimensions L×W×H (mm) |
|---|---|---|---|---|---|---|
| EZW11S-35×2000 | 2500 | 35 | 25 | 37.5 | 1.5-5 | 5450×2800×2000 |
| EZW11S-40×2000 | 2500 | 40 | 35 | 48 | 1.5-5 | 6000×2800×2000 |
| EZW11S-50×2000 | 2500 | 50 | 40 | 52 | 1.5-5 | 6100×2800×2200 |
| EZW11S-60×2000 | 2500 | 60 | 50 | 73.5 | 1.5-4 | 6900×3100×2650 |
| EZW11S-65×2000 | 2500 | 65 | 55 | 73.5 | 1.5-4 | 7050×3350×2700 |
| EZW11S-30×3000 | 3000 | 30 | 20 | 37.5 | 1.5-5 | 5950×2800×2000 |
| EZW11S-35×3000 | 3000 | 35 | 25 | 48 | 1.5-5 | 6500×2800×2000 |
| EZW11S-45×3000 | 3000 | 45 | 30 | 52 | 1.5-5 | 6600×2800×2200 |
| EZW11S-50×3000 | 3000 | 50 | 35 | 73.5 | 1.5-4 | 7400×3100×2650 |
| EZW11S-60×3000 | 3000 | 60 | 40 | 73.5 | 1.5-4 | 7550×3350×2700 |
| EZW11X-70×3200 | 3200 | 70 | 60 | 60+24.1 | 4.00 | 7980×3320×3680 |
| EZW11X-100×3200 | 3200 | 100 | 90 | 104+32.2 | 4.00 | 8600×4160×4490 |
| EZW11X-150×3200 | 3200 | 150 | 135 | 150+84.2 | 3.20 | 10430×4970×5850 |
| EZW11X-200×3200 | 3200 | 200 | 180 | 220+93.7 | 3.12 | 12100×6160×7460 |
Answer a few quick questions to help us recommend the most suitable plate bending machine for your application.
ASTM A516 Gr.70 / 16MnDR, thickness 50-200mm, roundness tolerance ±2mm.
API X80/X120 pipe, thickness 30-150mm, ovality control ±1.5%.
Q345/S355 structural steel, thickness 20-100mm, flat edge tolerance ≤3mm/1000mm.
Q235/A36 storage tank, thickness 8-60mm, high pre-bend accuracy for assembly.
SA516/15Mo3 boiler drum, thickness 40-120mm, precise circularity for flange matching.
304/316L stainless steel cone, 15°~45° adjustable angle, smooth transition surface.
Challenge: Frequent mold changeover caused
production bottleneck.
Solution:
EZW11S-100×3000 VCD CNC model.
Result:
+42% output, scrap rate 15%→3%, payback 14 months.
Challenge: X80 thick plate springback caused
diameter out of tolerance.
Solution:
EZW11X-150×3200 hydraulic pre-discharge system.
Result:
Roundness ±1.2mm, save €180,000 outsourcing cost yearly.
Challenge: Tank shell pre-bend inconsistency
led to welding distortion.
Solution:
EZW11S-60×3000 horizontal pre-bend CNC correction.
Result:
Assembly time -35%, annual capacity 500→650 units.
Challenge: Multi-angle cone shell frequent
mechanical adjustment.
Solution:
EZW11X-200×3200 automatic cone tilt system.
Result:
Setup time 2h→8min, machine utilization 68%→92%.
Minimum diameter varies by model. Entry-level EZW11S-35×2000 achieves 1.5m diameter; heavy-duty EZW11X-200×3200 reaches down to 0.8m. The variable center distance allows 40% reduction versus fixed-geometry machines.
Three independent LVDT position transducers measure upper and lower roller height in real-time. The Siemens PLC compares actual vs. target positions 50 times/second and adjusts hydraulic valve solenoids within ±2mm, maintaining ±0.2mm flatness.
Yes. Standard configuration is for cold rolling (up to 50°C ambient). Hot rolling variant available with 42CrMo rollers rated to 300°C and enhanced oil cooling. Consult engineering for specific hot-roll requirements.
24 months from shipment on parts and labor. Covers manufacturing defects. Consumables (seals, bearings) and routine wear parts excluded. Extended warranty available (36-60 months) at additional cost.
Yes. Optional IoT upgrade adds cloud connectivity. Real-time pressure, temperature, cycle data streamed to EZHONG service portal. Predictive alerts issued 2-4 weeks before component failures (±accuracy 85%).
| Accessory | Lead Time | Function | Value Proposition |
|---|---|---|---|
| Vertical Top Support System | 6 weeks | Support large-diameter coils up to 16m | 150-ton lift capacity, auto tilt with cone angle |
| Lateral Side Support Fixture | 4 weeks | Prevent wide plate lateral drift | Hydraulic automatic correction, match thin sheet processing |
| Automatic Plate Feeding System | 8 weeks | Motorized feeding & positioning | 60% labor saving, positioning tolerance <5mm |
| Hot Rolling Configuration | 10 weeks | 300°C high temperature rolling | Enhanced cooling system, high temperature resistant roller |
| Remote Monitoring & Diagnostics | 6 weeks | Cloud real-time machine data tracking | Predictive maintenance, reduce unplanned downtime 80% |