Model NO.: EN-BW-1300
Production Scope: Product Line
Thickness of Steel Sheet: 0.5-1.75mm
Length of Formed Sheet: >=290mm
Height of Corrugation: 50-400mm
Corrugation Pitch: >=40mm
Corrugation Pitch Accuracy: ±0.25mm
Corrugation Inner Gap: 6mm
Max Pressure: 25MPa
Width of Corrugation: 300~1300mm
Trademark: EN-SOURCE
Transport Package: Steel Wire.
Specification: 300-1300mm
Origin: China, Zhejiang
HS Code: 84552210
I General Layout for Transformer Corrugation Fin Production Line (fin forming, fin seam & edges welding, reinforcing rod welding, spot welding, vertical bending and tank assembling)Â Â Â
Build up of Transformer Corrugated Fin Production Line as the Drawings Shown
1. Transformer Corrugated Fin Forming Unit
1 Hydraulic Automatic Decoiler Machine       Â
2 Automatic Transformer Corrugated Fin Forming Machine
3 Â Hydraulic Plate Shearing and Hemming Machine
4 Â Hydraulic System
5 Â Electrical Control System
2. Transformer Corrugated Fin Seam Welding Unit
6 Roller Conveyor
7 Corrugated Fin Automatic Welding Machine
3. Transformer Corrugated Fin Spot Welding Unit
8 Spot Welding Machine for Fin Embossment
4. Transformer Corrugated Fin Vertical Bending Unit
9 Hydraulic Vertical Bending Machine
5. Corrugated Tank Assembly Unit
10 Tank Assembly Manipulator for Corrugated Tanks
General Introduction of Transformer Corrugation Fin Production Line
The corrugated fin production line is a specialized system designed for manufacturing sealed and maintenance-free transformer oil tanks. The main process involves unrolling material, forming corrugations, shearing and hemming, conveying and welding ends, welding reinforcing rods, embossing, bending, and finally assembling the tank.
Main Technical Parameters of Transformer Corrugated Fin Production Line
 1. Width of corrugation: 300~1300mm
2. Thickness of steel sheet: 0.5-1.75mm
3. Length of formed sheet: >=290mm
4. Height of corrugation: 50-400mm
5. Corrugation pitch: >=40mm
6. Corrugation pitch accuracy: ±0.25mm
7. Corrugation inner gap: 6mm
8. Max. Pressure: 25MPa
9. Max. Flux: 200L/min II Equipment Description
1. Description of Necessary Machine Unit        Â
(1) Hydraulic Automatic Decoiler Machine
1.1 Introduction
The decoiler features a welded steel frame with an expandable mandrel mounted on roller bearings. It uses hydraulics to control the expansion and retraction of the mandrel. When the steel sheet is automatically fed, a hydraulic motor assists in the unrolling and partial rewinding of the coil. Two photoelectric switches monitor the sheet between the decoiler and the forming machine to regulate the feeding process.
1.2 Parameters of Our Hydraulic Automatic Decoiler Machine
1) Hydraulic pressure: 16MPa
2) Coil inner diameter: Min 470mm, Max 520mm
3) Max. External diameter of steel coil: 1200mm
4) Coil width: Max. 1300mm
5) Coil weight: Max. 10 tons (with inclined support structure)
(2) Transformer Corrugated Fin Forming Machine
2.1 Introduction
This machine includes a steel-welded base, a two-roll feeder, movable and fixed forming pressboards, and a movable forming mold. It forms corrugations using extrusion theory, controlled by a high-precision servo system. The hydraulic station supplies oil, and the control system is separate from the welding unit. Two quenched pressing bars are used to press the ends of the corrugation, and their position can be adjusted based on the sheet width. Reinforcement slots can be added upon request.
2.2 Parameters of Our Transformer Corrugated Fin Forming Machine
1) Plate width: 300mm-1300mm (customizable)
2) Corrugation height: 50mm-400mm
3) Corrugation pitch: >=40mm
4) Plate thickness: 0.5mm-1.75mm
5) Forming speed: 3-4 fins/min
6) Power: 28KW
7) Number of pumps: 2 (separate plunger pumps)
8) Control system: electrical, hydraulic, and control board
(3) Hydraulic Plate Shearing and Hemming Machine   Â
3.1 Performance Features
This device is used to shear and hem corrugated steel sheets, making it easier to weld them into a transformer tank. It consists of lower and upper shearing blades mounted on a pillar guide. The blades are made of tool steel and can last over 100,000 cuts after sharpening. Shearing and hemming can be done manually or automatically via a feeding mechanism, all hydraulically driven.
3.2 Parameters of Our Hydraulic Plate Shearing and Hemming Machine
1) Shearing width: 300mm-1300mm
2) Corrugation height: <=400mm
3) Shearing thickness: <=2.0mm
4) Shearing time: 3-5 seconds/time
5) Hemming height: 20mm (adjustable from 18mm to 25mm)
(4) Hydraulic System
The hydraulic system comprises an oil tank, pump, motor, and valves. Key components are supplied by Rexroth, Germany.
4.1 Parameters of Our Hydraulic Station
1) Max. Pressure: 25MPa
2) Max. Flux: 200L/min
3) Pump motor power: 28KW
(5) Electrical Control System
5.1 The system includes a main control cabinet, operation console, local panels, and wiring. Relays, switches, transformers, and PLCs are housed in the control cabinet. MITSUBISHI controllers manage the production line, while the SCHNEIDER monitor serves as the human-machine interface. The control panel has a color touch screen, buttons, and indicators. Adjustments to lamination shapes and parameters are easily made through the interface, and manual operation is possible at different points in the line.
(6) Roller Conveyor
6.1 This conveyor transports sheared and hemmed corrugated sheets to the welding equipment. It uses ball bearings for smooth, non-motorized conveyance.
(7) Corrugated Fin Automatic Welding Machine
7.1 Introduction
This machine uses MAG welding to join corrugation ends and reinforcing rods, with a rod diameter of 6-8mm. It consists of a conveying mechanism, welding torch elevating system, amplitude modulation mechanism, and a machine hand. The conveying mechanism moves the sheet to the correct welding position, while the welding clamps and torches are controlled by a servo motor. An adjustable amplitude modulation mechanism allows for precise alignment. A machine hand is used to push the fin into position if needed. Two Panasonic welders are installed.
7.2 Specifications of the Welder
1) Welding speed: 0.5-1 m/min
2) Wire feed speed: 3.4-6 m/min
3) Arc voltage: 15-16V
4) Current: 50-60A
5) Wire diameter: 0.8 mm
6) Shield gas: 85% Ar + 15% CO2
7) Gas consumption: 15 L/min
8) Tip length: 7-10 mm
(8) Spot Welding Machine for Fin Embossment
8.1 Introduction
This machine increases the strength of reinforcement slots (embossments).
8.2 Main Units
1) Conveyor
2) Centering system
3) Clamps & generators
4) Cooling system
5) Control console with computer
8.3 Parameters
1) With 2 spot guns
2) Total rated power: 50KVA x 2
3) Cooling system
4) HMI control system
5) Suitable fin width: 600mm-1600mm
6) Suitable fin height: >=120mm
7) Air source: Self-provided
8) Air pressure: 0.6MPa (minimum)
(9) Hydraulic Vertical Bending Machine
9.1 This machine forms the four panels of a complete transformer tank, reducing three welds and minimizing leakage risks during assembly.
9.2 Main Units
1) Bending system
2) Safety system for the operator
3) Hydraulic unit
4) Control panel
9.3 Main Parameters
1) Sheet thickness (max): 1.75mm
2) Panel width (max): 1300mm
3) Panel fin height: 50-400mm
4) Distance between panels (min): 60mm
5) Power: 5.5KW
6) Hydraulic pressure: 10MPa
(10) Tank Assembly Manipulator for Corrugated Tanks
10.1 This manipulator is designed for fast and easy assembly of the top frame, bottom, and four corrugated panels to form a complete tank.
10.2 Main Units
1) Base frame
2) Hydraulic expanding head
3) Small hydraulic power pack
4) 4 sets of clamp arms
10.3 Specific Technical Data
1) Rated power: 4KW
2) Rated voltage: 380V
3) Rated pressure: 0.8MPa
4) Rated oil pressure: 3MPa
5) Tank inside dimensions: W 285mm to 900mm, L 600mm to 1500mm
2. Technical Parameters of this Transformer Corrugated Fin
| No. | Parameters | 800mm | 1300mm | 1600mm |
| 1 | Plate Width (W) | 300~800 mm | 300~1300 mm | 300~1600 mm |
| 2 | Plate Thickness (T) | 0.5~1.75mm | ||
| 3 | Corrugation Height (H) | 50~300mm | 50~400mm | |
| 4 | Corrugation Pitch (P) | >=45mm or >=40mm | ||
| 5 | Pitch Tolerance | ± 0.25mm | ||
| 6 | Hemming Height (R) | 20mm | ||
| 7 | Fin Gap (G) | 6mm | ||
Grinding mills are machines used to break solid materials into smaller pieces by grinding, crushing, or cutting. They are commonly used in the mining, construction, and chemical industries to reduce the size of materials such as rocks, minerals, or grains.
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