W12CNC Four Roll Plate Rolling Machine | Definition, Advantages, Selection Guide & Applications
1. What Is W12 CNC Four Roll Plate Rolling Machine?
The W12 CNC series is a hydraulic four roll plate rolling machine equipped with CNC programmable control system.
The machine structure consists of one fixed top roll, one movable bottom roll and two movable side rolls.
Working principle:
The bottom roll moves vertically upward to clamp the steel plate. Two side rolls travel linearly toward the top roll to adjust bending radius. With top and bottom double driving rolls, the machine realizes reliable plate feeding.
Different from three roll plate rolling machines, W12CNC can pre-bend both plate ends in one setup, the residual straight edge is only about 1.5 times plate thickness. It supports processing cylindrical, arc-shaped, conical and special-shaped rotary workpieces.
The suffix CNC means the machine is fitted with PLC, touch screen, displacement sensors and synchronous hydraulic system. Operators can store multiple groups of rolling parameters, realize automatic one-cycle rolling for mass production.
2. Core Advantages of W12 CNC Four Roll Plate Rolling Machine
2.1 One-time Loading, No Need to Turn Workpiece
After single feeding, both leading edge and trailing edge pre-bending and whole plate rolling can be finished. Avoid repeated material handling, greatly shorten production cycle compared with three roll plate rolling machines.
2.2 Minimal Residual Straight Edge
Residual straight edge reaches 1.5 × plate thickness, much smaller than traditional three roll machines (2.5 × plate thickness). Less cutting waste, saving raw material cost and reducing secondary machining work.
2.3 CNC Automatic Control & Parameter Storage
W12CNC supports saving up to 100 sets of rolling programs. For batch orders, call parameters directly and start automatic rolling. Synchronous control system ensures side rolls and bottom roll operate with high synchronization accuracy.
2.4 Stable Rolling Precision & Low Vibration
Main frame adopts thick welded structure with stress relief annealing. Work rolls are made of 42CrMo alloy steel via forging, quenching and tempering. Equipped with spherical roller bearings to absorb shaft deflection, guarantee long-term stable precision.
2.5 Powerful Forming Capacity, Suitable for Conical Workpieces
The coordinated movement of two side rolls enables stable cone rolling. This is an outstanding advantage for boiler, pipeline and tank manufacturers who need both cylindrical and conical shells.
2.6 Simple Operation, Single Operator Available
Intuitive touch screen operation. After program setting, automatic mode runs continuously. Reduce dependence on experienced operators and cut labor cost.
3. W12CNC Plate Rolling Machine Selection Guide
Choosing a suitable W12CNC four roll plate rolling machine directly affects production efficiency and finished quality. Follow these key points:
3.1 Confirm Core Processing Parameters
Maximum rolling thickness: distinguish thickness for normal rolling and maximum pre-bending thickness; consider material yield strength (carbon steel, stainless steel, aluminum alloy require different pressure).
Maximum working width: the effective length of work rolls, decide the maximum width of steel plate.
Minimum rolling diameter: the smallest cylinder inner diameter you need to produce.
Workpiece type: mainly cylinders, or need frequent cone rolling? Confirm with supplier if cone rolling function is standard.
3.2 Focus on Key Component Configuration
Work rolls: Prefer forged 42CrMo with surface hardening or surfacing welding for anti-wear performance.
Hydraulic system: Famous brand hydraulic pump, solenoid valve and NOK sealing parts to prevent oil leakage.
Control system: Siemens PLC & touch screen, Omron displacement sensors for stable signal feedback.
Driving form: Top & bottom roll dual hydraulic motor drive with planetary reducer for strong clamping force.
3.3 Choose Optional Accessories According to Production
Feeding platform: convenient for loading wide and heavy steel plates
Side support system: prevent large-diameter cylinder sagging caused by self-weight
Discharging turnover device: easy to unload finished cylinder
Chip collecting and auxiliary supporting frames
3.4 Confirm Power Standard & After-sales
Inform the supplier of local power voltage (380V/50Hz, 415V/50Hz etc.) for motor customization.
Confirm installation guidance, operator training and spare parts supply policy before order.
4. Main Industrial Applications of W12CNC Four Roll Plate Rolling Machine
The W12CNC plate bending machine is widely used in industries requiring metal shell fabrication:
Pressure Vessel & Boiler Industry: Roll boiler barrels, heat exchanger shells, storage tank sections.
Shipbuilding Industry: Marine steel structures, pipe segments, hull auxiliary components.
Petroleum & Chemical Industry: Various pipeline shells, chemical reaction tanks, separator cylinders.
Water Power & Wind Energy: Wind tower segments, hydraulic equipment casings.
Steel Structure & Metal Fabrication: Steel silos, ventilation ducts, arch structural parts.
Machinery Manufacturing: Hydraulic cylinder barrels, equipment housings, conical transition joints.
5. Frequently Asked Questions (FAQ) About W12CNC Plate Rolling Machine
Q1: What is the difference between W12 and W12CNC plate rolling machine?
A: Standard W12 is hydraulic NC model with manual adjustment. W12CNC upgrades to full CNC control, supports parameter storage, automatic synchronous movement and one-key automatic rolling, more suitable for mass production.
Q2: Can W12CNC roll stainless steel and aluminum plates?
A: Yes. It can process carbon steel, stainless steel, aluminum alloy and low alloy steel. You need to inform the manufacturer of material type and thickness to adjust machine load design.
Q3: Is W12CNC better than three roll plate rolling machine?
A: W12CNC has obvious advantages for high precision, batch production, cone rolling and strict requirements on residual straight edge. Three roll machines are more cost-effective for simple low-volume cylinder production.
Q4: What maintenance work is required for W12CNC four roll plate rolling machine?
A: Regularly check hydraulic oil level and cleanliness, lubricate bearings and guide rails, inspect sensor cables, clean work roll surface, and calibrate position accuracy periodically.
Q5: Can the W12CNC machine roll small diameter cylinders?
A: Yes. The double clamping roll design provides stable gripping. The minimum rolling diameter is related to top roll diameter; send your required minimum inner diameter to our team for model verification.
Q6: What is the lead time for W12CNC four roll plate rolling machine?
A: Standard models usually take 25–35 working days. Machines with customized width, thickness capacity or optional attachments need longer production cycle.
6. Conclusion
The W12 CNC four roll plate rolling machine represents a mature high-efficiency solution for modern metal plate rolling. Benefiting from one-pass pre-bending, small residual straight edge, CNC automation and strong capacity for cylindrical and conical workpieces, it continues to be the preferred equipment for pressure vessel, steel fabrication and engineering manufacturers worldwide.
If you are looking for a reliable W12CNC plate rolling machine manufacturer, send us your processing parameters including plate thickness, width, workpiece types and required accessories. We will provide matched machine proposal, technical datasheet and competitive factory quotation.
