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Heavy Duty Plate Rolling Machine for Pressure Vessel Manufacturing

Full Hydraulic Drive | CNC Synchronization ±0.2mm | Max Thickness 270mm

Max Thickness: 270mm
Effective Rolling Width: 3000~4000mm
Drive System: Tri-Drive Full Hydraulic with Planetary Reducers
CNC Precision: ±0.2mm Synchronization Accuracy
Roller Layout: Horizontal Downward Adjustable 3-Roll Asymmetric
Benchmark Customer: TWC (Former Zhangjiagang Chemical Machinery)

Core Advantages for Pressure Vessel Production

Built-in Hydraulic Cylinder Structure

The hydraulic cylinder is placed inside the machine frame, avoiding piston rod scratch caused by steel scale during thick plate rolling. Both upper and lower hydraulic cylinders work without rod cavity. Less high-pressure sealing parts, longer service life for continuous pressure vessel batch production.

Powerful Conical Shell Forming Capability

Specially designed reduction device for conical rolling installed on openable bearing base. The CNC system adjusts top roller tilt angle dynamically. Can fabricate small-diameter, large taper angle conical shells that cannot be realized by ordinary plate rolling machines. Ideal for pressure vessel transition cone sections.

Hydraulic Pre-Unloading System

Exclusive hydraulic pre-unloading control module matches pressure detection and CNC system. Realizes stable pressure relief after heavy load rolling, prevents steel plate springback, avoids workpiece shifting and water hammer impact to hydraulic pipelines. Ensures roundness precision of pressure vessel cylinders.

Intelligent HMI Control System

Real-time display of hydraulic pressure, motor working status, and displacement data on touch screen. Multiple alarm functions: overload alarm, oil temperature alarm, limit reminder. Convenient for standardized production management of pressure vessel factories.

Thick Plate Forming Stability

Available maximum rolling thickness up to 270mm, effective rolling width 3000~4000mm. Suitable for alloy steel, boiler plate used in petrochemical equipment, energy pressure vessels.

Professional Manufacturer Since 1958

EZHONG has been professionally developing and manufacturing plate rolling equipment since 1958. We provide customized heavy roll bending machine solutions for global pressure vessel factories, with full international certifications and complete after-sales service.

Machine Structure & Working Principle

01. Full Hydraulic Driven Horizontal Downward 3-Roll Plate Bending Machine

Our horizontal adjustable three roll plate bending machine adopts asymmetric roller layout: the top roller is hydraulically powered, two bottom rollers perform horizontal movement. All three working rollers are main drive rollers driven by hydraulic motors and planetary reducers.

  • Direct coupling between planetary drive unit and roller shaft greatly reduces power loss
  • Improves efficiency during heavy plate rolling
  • Top roller lifting displacement controlled by computer, auto leveling with synchronization accuracy ±0.2mm
  • Hydraulic turnover mechanism and hydraulic balance device for fast unloading finished cylinder workpieces

Safety Features: Fixed operation console and remote control box optional, with safety interlock system for workshop operation

Full hydraulic driven horizontal downward 3-roll plate bending machine structure
02. Built-in Hydraulic Cylinder Structure

The hydraulic cylinder is placed inside the machine frame, avoiding piston rod scratch caused by steel scale during thick plate rolling. Both upper and lower hydraulic cylinders work without rod cavity, reducing high-pressure sealing parts and extending service life.

  • Cylinder protected inside frame, no steel scale accumulation
  • Rodless cavity working mode for both upper and lower cylinders
  • Fewer high-pressure sealing components
  • Longer service life for continuous pressure vessel batch production
Built-in hydraulic cylinder structure
03. Powerful Conical Shell Forming Capability

Specially designed reduction device for conical rolling installed on openable bearing base. The CNC system adjusts top roller tilt angle dynamically. Can fabricate small-diameter, large taper angle conical shells that cannot be realized by ordinary plate rolling machines.

  • Openable bearing base with dedicated cone rolling reduction device
  • CNC dynamic top roller tilt angle adjustment
  • Small-diameter, large taper angle conical shell fabrication
  • Ideal for pressure vessel transition cone sections
Conical shell forming capability
04. Hydraulic Pre-Unloading System

Exclusive hydraulic pre-unloading control module matches pressure detection and CNC system. Realizes stable pressure relief after heavy load rolling, prevents steel plate springback, avoids workpiece shifting and water hammer impact to hydraulic pipelines.

  • Stable pressure relief after heavy load rolling
  • Prevents steel plate springback
  • Avoids workpiece shifting
  • Eliminates water hammer impact, ensures cylinder roundness precision
Hydraulic pre-unloading system
05. Intelligent HMI Control System

Real-time display of hydraulic pressure, motor working status, and displacement data on touch screen. Multiple alarm functions for standardized production management of pressure vessel factories.

  • Real-time hydraulic pressure display
  • Motor working status monitoring
  • Overload alarm, oil temperature alarm, limit reminder
  • Convenient for standardized production management
Intelligent HMI control system touch screen

Main Component Introduction

Asymmetric Roller Layout

Top roller hydraulically powered, two bottom rollers perform horizontal movement. All three working rollers are main drive rollers driven by hydraulic motors and planetary reducers.

Tri-Drive Hydraulic Motor System

Direct coupling between planetary drive unit and roller shaft greatly reduces power loss, improving efficiency during heavy plate rolling.

Hydraulic Turnover & Balance Device

Hydraulic turnover mechanism and hydraulic balance device installed for fast unloading of finished cylinder workpieces. Built-in cylinder design protects against steel scale.

CNC Control & Safety System

Computer-controlled top roller lifting with ±0.2mm synchronization accuracy. Fixed operation console, remote control box optional, safety interlock system for workshop operation.

Main Technical Specifications (Benchmark Model EZW11S-270×3600)

Parameter Specification
Max Rolling Thickness 270 mm
Effective Rolling Width 3600 mm
Top Roller Lifting Synchronization Accuracy ±0.2 mm
Drive System Tri-Drive Full Hydraulic Drive
Unloading Method Hydraulic Turnover Frame Unloading
Control System CNC Closed-Loop Control

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Application Range

Thick-Wall Pressure Vessel Cylinders

Heavy plate cylinder forming for petrochemical pressure vessels, thickness up to 270mm, roundness precision ensured by CNC synchronization.

Large Taper Conical Shells

Small-diameter, large taper angle conical shells and variable-diameter transition sections for pressure vessel cone fabrication.

Heat Exchanger Barrels

Precision rolling of heat exchanger tube sections with ±0.2mm synchronization accuracy for flange matching.

Industrial Storage Tank Shells

Storage tank shell forming with high pre-bend accuracy for assembly, suitable for energy equipment applications.

Petrochemical Equipment

Alloy steel and boiler plate processing for petrochemical equipment, energy pressure vessels, and new energy pressurized equipment.

Metallurgical Heavy Components

Heavy steel structure and metallurgical components forming, suitable for global pressure vessel factories and boiler manufacturing enterprises.

Reference Case: TWC (Former Zhangjiagang Chemical Machinery)

Customer Cases
Product Video

Frequently Asked Questions

What is the maximum rolling thickness of this machine?

The benchmark model EZW11S-270×3600 supports a maximum rolling thickness of 270mm, with an effective rolling width of 3600mm. It is suitable for alloy steel and boiler plate used in petrochemical equipment and energy pressure vessels.

How does the CNC synchronization system work?

The top roller lifting displacement is controlled by computer with auto leveling, achieving synchronization accuracy of ±0.2mm. The CNC closed-loop control system ensures consistent bending quality across the entire plate width.

Can this machine handle conical shell forming?

Yes. A specially designed reduction device for conical rolling is installed on the openable bearing base. The CNC system dynamically adjusts the top roller tilt angle, enabling fabrication of small-diameter, large taper angle conical shells that cannot be realized by ordinary plate rolling machines. Ideal for pressure vessel transition cone sections.

What is the hydraulic pre-unloading system?

The exclusive hydraulic pre-unloading control module matches pressure detection and the CNC system. It realizes stable pressure relief after heavy load rolling, prevents steel plate springback, avoids workpiece shifting, and eliminates water hammer impact to hydraulic pipelines, ensuring roundness precision of pressure vessel cylinders.

Who is the benchmark customer for this machine?

TWC (Zhangjiagang Chemical Machinery Co., Ltd.), a top enterprise engaged in pressure vessel design and manufacturing, purchased the EZHONG EZW11S-270×3600 hydraulic plate rolling machine. The machine undertakes thick plate cylinder forming for petrochemical pressure vessels with stable running performance and high rolling precision.

Customization & Optional Accessories

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%

Certifications & Complete After-Sales Commitment

Full International Certifications

  • ISO 9001:2015 Quality System
  • ISO 14001 Environmental Management
  • CE Machinery Directive 2006/42/EC
  • IATF 16949 Automotive Standard
  • ASME & GB National Heavy Machinery Standard

Global After-Sales Service

  • 24/7 multilingual technical hotline
  • 2-year full manufacturing warranty
  • On-site installation & operator training
  • 15+ years spare parts supply guarantee
  • Free CNC software upgrade for 5 years