Steel Plate Curve Cutting Machine (Bevel Cutting to 70mm, Sector Plates) | Jinfeng, Ningbo, China

Steel Plate Curve Cutting Machine

Jinfeng (Ningbo Jinfeng Welding & Cutting Machinery Manufacture): Cixi, Ningbo, China

CNC gantry with two independently driven cutting torch groups for cutting sector plates and curved plate with V and K bevels on both edges at once, in carbon steel up to 150mm thick (70mm with bevel).

The Steel Plate Curve Cutting Machine is used for bevel (groove) cutting of carbon steel plates. In wind tower and penstock (water pressure pipe) fabrication, a lot of sector-shaped and hyperbola-shaped plates have to be cut with bevelled edges before they are rolled. This machine cuts V-shaped and K-shaped bevels on both sides of plates with different curvatures at the same time. Jinfeng says the parts can go directly to automatic welding after rolling.

It is built as a cross beam on two low longitudinal end frames for stability. Two groups of main cutting torches, one at each edge, are driven independently by AC servo systems on gear and rack, and the longitudinal movement is bilateral gear and rack drive. It cuts plate from 6mm up to 150mm thick, and can cut grooves (bevels) in plate from 6mm up to 70mm thick.

The CNC control was developed by Jinfeng specifically for this machine. It runs a 32-bit Linux real-time operating system and has a 17-inch touch screen, and it can be connected to PCs on the network for file transfer, monitoring, and software updates. For bi-arc groove curved parts, the operator only needs the essential dimensions of the part, and there is no manual programming.

Why Choose a Dedicated Curve Cutting Machine?

Cutting curved, bevelled plate for wind towers and penstocks is slow on a standard plate cutter, because both edges need matching bevels along a changing curve. A two-torch machine with dedicated software cuts both edges at once and needs no manual programming.

• Both edges at once. Two independent torch groups cut left and right edges together.
• V and K bevels. Bevels are cut as the plate is profiled, so no second operation.
• Thick plate. Up to 150mm plate, and bevels up to 70mm.
• No manual programming. Bi-arc groove parts need only their basic parameters.
• Ready for welding. Parts go directly to rolling and automatic welding.

Machine Specifications

• Rail span: 4,000mm
• Rail length: configured as required
• Horizontal effective stroke: 3,000mm
• Longitudinal effective stroke: rail length minus 2,000mm
• Cutting torch groups: 2
• Cutting speed: 100 to 750mm/min
• Non-cutting (traverse) speed: 6,000mm/min
• Torch lifting distance: 200mm
• Steel plate cutting thickness: 6 to 150mm
• Steel plate groove (bevel) cutting thickness: 6 to 70mm
• Cutting oxygen pressure: 0.784 to 0.882MPa
• Preheat oxygen pressure: 0.392MPa
• Fuel gas pressure: 0.049MPa

Drive and control

• Torch drive: AC servo, independent per torch group, gear and rack
• Longitudinal drive: bilateral gear and rack
• CNC: Jinfeng's own system, 32-bit Linux real-time OS, 17-inch touch screen, network connection

Marking and cutting accuracy (allowable deviations)

• Side length error (four sides): 0.5mm or less
• Diagonal deviation: 0.5mm or less (a second diagonal figure of 0.3mm is also listed)
• Homing error: 0.2mm or less
• Intersection point deviation: 0.5mm or less
• Line and anti-curve line error: 0.2mm or less

Condition Available: New

Key Features

• Two independently driven torch groups for simultaneous two-edge bevel cutting
• V and K bevels on curved and sector plates
• Cuts plate from 6 to 150mm thick
• Purpose-built CNC with a 17-inch touch screen and network connectivity
• No manual programming for bi-arc groove parts
• Bilateral gear-and-rack drive

Applications

• Sector plates and hyperbolic plates for wind towers
• Penstock (water pressure pipe) plate
• Pressure vessel and pipe plate needing bevels before rolling

Who This Machine Is For

• Wind tower manufacturers
• Penstock and large pipe fabricators
• Pressure vessel shops cutting curved, bevelled plate

Frequently Asked Questions

What does this machine cut?
Curved and sector-shaped carbon steel plates with bevelled edges, such as those used in wind towers and water pressure pipes.

How thick a plate can it cut?
6 to 150mm, and bevels on plate from 6 to 70mm.

Can it cut both edges at once?
Yes. Two independent torch groups cut V and K bevels on both sides of the plate at the same time.

How long a plate can it cut?
The rail is configured to order. The effective length is the rail length minus 2,000mm, and the effective width is 3,000mm.

How is it programmed?
The control system is made for this machine, and for bi-arc groove parts the operator only needs the essential dimensions of the part.

How accurate is it?
The page lists allowable deviations of 0.2 to 0.5mm across side lengths, diagonals, and curve lines, but the measured-deviation columns are blank.

Is financing or staged payment available?
Yes. A deposit secures your order and begins production, with the remaining balance due only once your machine has been built, inspected, and is ready to ship.

Should I buy new or used?
This machine is available new, built to order.