Automatic Industrial Pneumatic AC Circular Straight seam welder
# Classification
This Seam Welding Machine can be categorized in several ways: By power source: AC and inverter DC
By welding wheel direction: Horizontal and longitudinal
By quality grade: Top quality and simple type
# Features
1. Equipped with a 3-phase variable frequency motor, ensuring stable welding speed, convenient adjustment and reliable operation.
2. The welding circuit loop is cooled by internal water circulation, while the welding wheels (electrodes) adopt external water cooling.
3. The conductive rotating parts adopt an embedded silver bushing structure; the conductive base is sealed oil-lubricated and water-cooled to keep the silver bushings rotating flexibly without locking.
4. This Automated Seam Welding System is available in both horizontal and longitudinal versions, marked as H for horizontal and L for longitudinal.
# Main Advantages Over Similar Models
1. The conductive rotating components feature embedded silver bushings, with the conductive base lubricated by sealed oil and cooled by water, ensuring smooth rotation and avoiding seizure.
2. The rotation shaft inside the conductive base is treated with nanometer ceramic spraying, unlike ordinary nylon materials, providing stronger wear resistance and longer service life.
3. The cylinder guide bar is square instead of round, effectively preventing the welding wheel from skewing and resulting in better welding quality.
# Machine Structure
1. Machine body: Constructed with vertical reinforcement, welded with high‑quality thick steel plates.
2. Transformer: Made of high‑permeability silicon steel sheets (15000 gauss), with internal water cooling, full copper alloy core, low impedance, high power utilization, 50% duty cycle for long‑time welding, high output power, longer service life, lower noise and more compact structure.
3. Solenoid: Imported from Taiwan, with high speed and excellent performance.
4. Cylinder: Made of high‑precision, wear‑resistant hard duralumin, rust‑proof, low friction, low noise and fast pressure buildup, thus reducing welding spatter.
5. Welding wheels: Manufactured from CuCrZr material with high wear resistance, water‑cooled for extended service life.
6. Switches
7. Air source processor
8. Conductive base with silver bushing structure
9. Controller: Sunke, a top Chinese brand
10. Motor: Mitsubishi, Japan
11. Cooling water system
12. Compressed air system
13. Monitor and alarm system
# Applications
This Continuous Seam Welding Equipment is widely used in metal processing, electrical appliances, fuel tanks, water tanks and other fields. It is especially suitable for seam welding of basins, barrels, tanks and other sealed thin‑walled containers made of low carbon steel or stainless steel. Model
Item Unit | FN-80-H(L) | FN-100-H(L) | FN-160-H(L) |
| Rated capacity | KVA | 80 | 100 | 160 |
| Primary voltage | V/PHASE | 380/1 | 380/1 | 380/1 |
| Frequency | HZ | 50 | 50 | 50 |
| Max. short circuit current | KA | 26 | 30 | 40 |
| Electrode stoke | mm | 100 | 100 | 100 |
| Welding speed | m/min | 0.7-3.9 | 0.7-3.9 | 0.7-3.9 |
| Electrode pressure | N | 6000 | 6000 | 7800 |
| Welding capacity(low carbon steel) | mm | 1.2+1.2 | 1.5+1.5 | 2.0+2.0 |
| Voltage of motor | V/PHASE | 380/3 | 380/3 | 380/3 |
| Power of motor | W | 550 | 750 | 750 |
| Cooling water flux | L/min | 8 | 8 | 10 |
| weight | Kg | 380 | 510 | 630 |
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