Marine Hull Plate Bending Roller

Product Specifications

Technical details and manufacturing context for Marine Hull Plate Bending Roller

Definition

The Marine Hull Plate Bending Roller is a heavy-duty industrial machine used in shipbuilding to precisely bend and form thick steel plates into curved hull sections through controlled rolling pressure. It employs three or four synchronized rollers that apply progressive deformation to metal plates without heating, maintaining material integrity. This equipment is essential for creating the complex curvatures of ship bows, sterns, and bilge areas with high dimensional accuracy. Automated versions incorporate CNC controls for repeatable production of identical curved components across multiple ship units.

The machine operates by feeding steel plates between rollers that exert controlled pressure, causing plastic deformation. The rollers are driven by hydraulic or electric motors, and the plate is passed through multiple times to achieve the desired curvature. The process is cold-forming, meaning no heat is applied, which preserves the material's original properties. The equipment is designed to handle high-strength alloy steel and hardened tool steel, with a maximum plate width ranging from 2000 to 6000 mm, a minimum bend radius of 300 to 1000 mm, and a maximum plate thickness of 10 to 40 mm. The roller diameter ranges from 200 to 500 mm, and the motor power is between 15 and 90 kW. The machine weight is 10 to 50 tons, and its dimensions vary from 5000×2000×2500 mm to 12000×4000×5000 mm. Bending speed is 1 to 5 m/min, and bending precision is ±0.5 to ±2 mm. The control system is PLC + HMI, and the power supply is 380 V AC ±10%. The hydraulic system pressure is 20 to 31.5 MPa, and the operating temperature range is 0 to 45°C.

These specifications are typical ranges; actual values must be confirmed with the manufacturer for specific models and applications. The machine is a capital investment for shipyards, and its selection depends on the required plate dimensions, thickness, and curvature. Proper maintenance and operator training are essential for safe and accurate operation. Always verify model-specific parameters and compliance with applicable standards before procurement.

Working Principle

Hydraulic or electric motors drive synchronized rollers that apply controlled pressure to steel plates, progressively bending them through plastic deformation as they pass between the rollers in multiple passes. The plate is fed between the rollers, and the gap between the rollers is adjusted to achieve the desired curvature. The process is repeated until the required shape is obtained. The rollers are typically arranged in a pyramid or pinch configuration, with the top roller applying downward force and the bottom rollers providing support. The bending force is generated by the hydraulic system, which operates at a pressure of 20 to 31.5 MPa. The control system (PLC + HMI) allows precise adjustment of roller positions and speed, ensuring repeatability and accuracy.

Common Materials

High-Strength Alloy Steel, Hardened Tool Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Maximum Plate WidthRequired	2000–6000 mm	Maximum width of steel plate that can be processed
Minimum Bend RadiusRequired	300–1000 mm	Smallest achievable curvature radius
Roller DiameterRequired	200–500 mm	Diameter of main bending rollers
Motor PowerRequired	15–90 kW	Total drive system power
Machine Weight	10–50 tons	Total equipment mass for installation planning
Maximum Plate Thickness	10–40 mm	Thicker plates require higher bending force and may reduce width capacity.
Bending Speed	1–5 m/min	Affects productivity and surface quality.
Bending Precision	±0.5–±2 mm	Critical for hull plate fit-up and welding.
Control System	PLC + HMI	Automated control for repeatability and ease of operation.
Operating Temperature	0–45 °C	Outside this range, hydraulic oil viscosity and electronic components may be affected.
Power Supply	380 ±10% V AC	Three-phase; other voltages available on request.
Hydraulic System Pressure	20–31.5 MPa	Determines bending force; higher pressure for thicker plates.
Machine Dimensions (L×W×H)	5000×2000×2500–12000×4000×5000 mm	Required for workshop layout and shipping.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Main Bending Roller
Primary component applying bending force to plates

Material: Hardened alloy steel with surface treatment
Hydraulic Pressure System
Provides controlled force application through cylinders

Material: Steel components with hydraulic seals
CNC Control Panel Optional
Digital interface for programming bending parameters and sequences

Material: Industrial-grade electronics enclosure
Plate Support Table
Stabilizes and guides plates during feeding and bending operations

Material: Reinforced structural steel
Synchronized Rollers
Driven in synchronization with the main roller to progressively bend the plate.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Marine Hull Plate Bending Roller.

Manufacturers of Marine Hull Plate Bending Roller

Manufacturer profiles associated with Marine Hull Plate Bending Roller.

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Frequently Asked Questions

What is the maximum plate thickness this machine can handle?

According to the directory data, the maximum plate thickness is 10 to 40 mm. However, thicker plates require higher bending force and may reduce width capacity. Always confirm the exact capability with the manufacturer for your specific model.

Can this machine bend plates without heating?

Yes, it uses cold-forming process, applying controlled pressure to deform the plate plastically without heating. This preserves the material's integrity and is suitable for high-strength alloy steel and hardened tool steel.

What control system does the machine use?

The machine is equipped with a PLC + HMI control system, allowing automated and repeatable bending operations. This facilitates precise adjustment of roller positions and speed for consistent results.

What are the power supply requirements?

The standard power supply is three-phase 380 V AC ±10%. Other voltages may be available on request. Verify the electrical specifications with the manufacturer to ensure compatibility with your facility.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Hydraulic system: 10-25 MPa, Roll contact pressure: 50-300 MPa (plate dependent)
other spec:	Plate thickness: 5-100 mm, Plate width: 1-4 m, Minimum bend radius: 1.5x plate thickness, Roll diameter: 300-800 mm, Motor power: 15-150 kW
temperature:	Ambient to 50°C (operating environment)

Product Specifications

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