HDLW11-100X4200 pull-down 3 roller plate rolling machine

Key Advantages of HDLW11-100X4200 Pull-Down 3 Roller Plate Rolling Machine

- Pull-down configuration: The upper roll is located below the two lower rolls on the HDLW11-100X4200 pull-down 3 roller plate rolling machine, lowering the plate's center of gravity during rolling and reducing lateral deviation of wide plates.
- Hydraulic drive system: The main cylinder delivers 100 tons of rolling force, distributed across both ends of the upper roll.
- Synchronized torque output: Lower roll torque is distributed via a gear distribution box or dual-motor drive, maintaining consistent linear speed between the two lower rolls.
- Wide plate capacity: The maximum rolling width of 4200mm makes this pull-down 3 roller plate rolling machine suitable for forming wide steel plates.
- Position indication: The upper roll lifting stroke is equipped with a displacement indicator, facilitating control of bending curvature on the HDLW11-100X4200.

Product Specifications of HDLW11-100X4200 Pull-Down 3 Roller Plate Rolling Machine

The HDLW11-100X4200 pull-down 3 roller plate rolling machine features a maximum plate thickness of 100mm for cold bending of Q235 material and a maximum plate width of 4200mm. The rolling method is pull-down, with the upper roll applying pressure from below the plate. The roll surface is induction-hardened to achieve a surface hardness of HRC45–50. The frame construction utilizes a welded steel frame that is stress-relieved by annealing. The hydraulic system includes an independent tank with return filtration and a cooling device. The control method employs centralized electrical control with inching and continuous operation functions. These specifications make the HDLW11-100X4200 pull-down 3 roller plate rolling machine a reliable choice for wide-plate cold forming applications.

Application Scenarios of HDLW11-100X4200 Pull-Down 3 Roller Plate Rolling Machine

The HDLW11-100X4200 pull-down 3 roller plate rolling machine is widely used in the following applications: large-diameter pipeline cylinder rolling, wind tower wide-plate forming, pressure vessel shell processing, ship hull curved plate bending, and bridge steel structure curved component prefabrication.

Common Issues and Solutions for HDLW11-100X4200 Pull-Down 3 Roller Plate Rolling Machine

Issue 1: Uneven plate feed on wide plates (one end leading the other)
Possible causes: Uneven drive torque between the two lower rolls; plate not fed perpendicular to the roll axis.
Solution: Check synchronization of dual drive motors or transmission gears on the HDLW11-100X4200 pull-down 3 roller plate rolling machine; adjust to balanced torque output. Mark a centerline on the plate and align it with the roll face before feeding.

Issue 2: Rolled cylinder diameter larger or smaller than target
Possible causes: Material springback not compensated; displacement indicator calibration offset.
Solution: Pre-determine springback compensation based on plate material and thickness (typically 2–5mm, requires actual testing); calibrate the upper roll displacement indicator periodically on the HDLW11-100X4200.

Issue 3: Reduced hydraulic pressure or slow response
Possible causes: Incorrect hydraulic oil viscosity or low oil temperature; internal leakage due to worn main cylinder seals.
Solution: Replace with the recommended viscosity grade hydraulic oil; preheat oil in cold weather. Inspect cylinder seal condition and replace worn seals.

Operational Precautions for HDLW11-100X4200 Pull-Down 3 Roller Plate Rolling Machine

- The HDLW11-100X4200 pull-down 3 roller plate rolling machine has a lower center of gravity, but the foundation must still accommodate dynamic loads; a reinforced concrete foundation is recommended.
- Supply voltage fluctuation should not exceed ±10% of the rated voltage.
- For wide plates, auxiliary support devices (e.g., support rollers or cantilever supports) are recommended to reduce plate sagging deformation.
- Check hydraulic lines and fittings daily for leaks.
- Operators must understand the operating characteristics of the pull-down configuration, particularly the interlock logic between upper roll lifting and lower roll rotation.