TRANFOVIA(NINGBO) EQUIPMENT TECHNOLOGY CO.,LTD
TRANFOVIA(NINGBO) EQUIPMENT TECHNOLOGY CO.,LTD
The Radiator Panel Multi-Spot Welding Machine is designed for automatic spot welding of transformer radiator panels after the turnover and joining process.
The machine performs multiple resistance welding operations along the radiator oil channel, firmly joining two radiator panels together to ensure reliable connection and stable oil passage structure.
With a gantry-type welding structure, precise electrode control, and adjustable welding parameters, the equipment provides consistent welding quality and high production efficiency for transformer radiator manufacturers.
It is an essential welding unit in automatic radiator production lines, helping manufacturers achieve stable weld strength, reduced manual operation, and improved production consistency.
| Spots per stroke
6 (single-row) / 12 (double-row) |
Rated input
300 KVA |
| Transverse pitch
75 mm (62 – 80 mm) |
Electrode force
2,500 N max |
The machine performs multiple spot welding operations along the radiator oil channel, ensuring strong and uniform connections between radiator panels.
The equipment supports different welding configurations, including single-row and double-row welding structures, according to radiator design requirements.
Each welding point is independently controlled by pneumatic pressure, ensuring uniform electrode force and consistent welding quality.
The welding current, pressure, and welding sequence can be adjusted according to different radiator panel specifications.
Through PLC and touchscreen control, operators can easily set welding parameters and achieve stable automatic production.
The Radiator Panel Multi-Spot Welding Machine is installed after the panel turnover and joining process and before the double-side seam welding process.
The typical production sequence is:
Steel Coil Feeding → Hydraulic Mandrel Decoiler → Radiator Panel Roll Forming → Panel Turnover & Joining → Multi-Spot Welding → Double-Side Seam Welding → Edge Trimming → End Welding → Leveling → Automatic Cutting & Unloading → Header Pipe Assembly
After two radiator panels are accurately combined, the machine completes multiple spot welds along the oil channel direction, ensuring stable positioning before continuous seam welding.
This process improves welding accuracy, oil channel sealing reliability, and overall radiator manufacturing efficiency.
| Parameter | Value |
| Construction | Gantry crossbeam type (single-row 6 points / double-row 12 points) |
| Rated input capacity | 300 KVA |
| Input supply | 3-phase 380 V, 50/60 Hz |
| Duty cycle | 50% |
| Welding transformers | 6 x 50 KVA cast resin (double-row: 12 x 45 KVA varnish dipped) |
| Electrode heads | 6 pairs (double-row: 12 spots per stroke) |
| Transverse spot pitch | 75 mm (adjustable 62–80 mm) |
| Double-row longitudinal centre distance | 300 mm |
| Maximum electrode force | 2,500 N |
| Electrode stroke | 50 mm upper / 50 mm lower |
| Maximum material thickness | 2.0 + 2.0 mm |
| Electrode caps | Standard cap type, Φ16 tapered shank, threaded connection |
| Cooling | Water cooling with aluminium alloy distribution block; optional 10 HP chiller with temperature alarm |
| Pneumatics | AirTAC / Japan CKD (double-row model) |
It fixes two joined radiator panels through multiple spot welds, creating a stable oil channel structure before seam welding.
The machine uses resistance spot welding technology to create multiple welding points along the radiator oil channel.
The standard configuration supports 6 welding points for single-row models and 12 welding points for double-row models.
Independent electrode pressure control and adjustable welding parameters ensure uniform pressure distribution and stable weld quality.
Yes. Welding current, pressure, and welding sequence can be adjusted according to different radiator specifications.
The machine supports radiator panels with a typical thickness range of 2.0 mm + 2.0 mm, with customized solutions available.
Yes. It can be supplied as a standalone welding machine or integrated into a complete transformer radiator production solution.
