3 Rolls X-Plate Bending Machine

In nuclear power, offshore structures, and heavy-duty pressure vessel manufacturing, thick and high-strength plates often need to be formed into relatively small-diameter cylinders. Conventional three-roll plate bending machines may face significant challenges under these demanding forming conditions.

• Common challenges in small-diameter thick-plate cylinder production:
• Insufficient forming force for small diameters-Fixed roll geometry and large lower-roll center distances can limit the available forming torque, making it difficult to achieve stable bending when processing thick and high-strength plates.
• Excessive straight edges at plate ends- Limited pre-bending capability leaves longer unformed sections at both ends, requiring additional cutting and increasing material consumption.
• Roll deflection under extreme loads- Heavy forming forces can cause work-roll deflection, affecting cylinder roundness and longitudinal straightness, particularly when processing thick plates over the full plate width.
• Difficult springback control- High-strength materials generate significant elastic recovery after bending, making it challenging to achieve the target diameter consistently without repeated correction.
• Multiple rolling operations reduce productivity- Thick plates and small target diameters often require repeated rolling, repositioning, and correction, increasing cycle time and making weld seam alignment more difficult.
• High forming loads accelerate equipment deformation- Continuous heavy-duty operation places substantial reaction forces on the frame, rolls, and drive system, requiring high structural rigidity and long-term precision retention.