Galvanized Sheet Multi Point Head Spot Welding Machine
High Efficiency Multi Point Spot Welder for Galvanized Sheet Production
This industrial spot welding machine is purpose-built for the continuous welding of galvanized sheets, stainless steel blanks, and cold-rolled steel components. Equipped with multi point head welding construction, the machine delivers consistent, high-strength joints while minimizing heat distortion and surface burn-through on coated materials. The rigid stainless steel frame and precision-aligned electrode heads ensure stable operation in high-volume sheet metal fabrication environments.
Engineered for production floor reliability, this spot welder supports a maximum welding thickness of 6+6 mm and a rated duty cycle of 50%, allowing operators to maintain steady output during long working shifts. With selectable 220V and 380V power configurations, the machine integrates easily into existing workshop power supplies. The intuitive control and robust mechanical build reduce maintenance downtime and help fabricators achieve repeatable weld quality on every workpiece.
Key Technical Advantages
Multi Point Head Design for Faster Cycle Times
The multi point head configuration allows several weld spots to be completed in a single clamping operation. This reduces handling time, improves positioning consistency, and significantly increases production throughput compared to single-tip spot welders.
6+6 mm Welding Capacity for Industrial Workpieces
With a maximum combined welding thickness of 6+6 mm, the machine is capable of joining medium-gauge galvanized steel and stainless steel sheets commonly used in cabinets, enclosures, and structural assemblies. The high electrode force and precise current control create strong nugget formation even on coated surfaces.
50% Rated Duty Cycle for Continuous Operation
The 50% duty cycle means the welder can operate for half of a standard duty period at rated load, providing dependable performance for batch production. This rating reduces overheating risk and extends the service life of the transformer and electrode system.
Dual Voltage 220V/380V for Flexible Installation
Available in both 220V and 380V configurations, the machine adapts to different factory power environments without requiring complex transformer upgrades. This flexibility makes it suitable for small workshops as well as large fabrication lines.
Stainless Steel Construction for Long-Term Durability
The welded steel frame and stainless steel outer panels protect internal components from sparks, dust, and mechanical impact. This rugged construction keeps the machine stable during high-speed welding and simplifies cleaning, which is essential for maintaining weld quality in industrial environments.
Applications
| Industry |
Typical Workpiece |
Welding Mode |
| Sheet Metal Fabrication |
Galvanized steel cabinets, enclosures, and electrical boxes |
Multi point resistance spot welding |
| Appliance Manufacturing |
Washing machine shells, refrigerator panels, and air conditioner housings |
Multi point spot welding of pre-coated steel |
| Automotive and Transport Components |
Door panels, hoods, brackets, and seat frame parts |
Projection and multi point spot welding |
Working Principle
The multi point head spot welder operates on the resistance welding principle. Two copper electrode tips press the overlapping galvanized sheets together, and a high electric current is passed through the joint. The electrical resistance at the sheet interface generates concentrated heat, which melts the base material and forms a weld nugget. Because the current and pressure are precisely controlled, the coating layer on galvanized steel is preserved around the weld zone, reducing corrosion and post-weld cleanup. The multi point head design allows several electrodes to act simultaneously, producing multiple identical weld spots in one machine cycle for faster and more uniform assembly.
Technical Specifications
| Parameter |
Unit |
DN-40 |
DN-63 |
D(T)N-80 |
D(T)N-100 |
D(T)N-125 |
D(T)N-160 |
D(T)N-200 |
| Rated power At 50% |
KVA |
40 |
63 |
80 |
100 |
125 |
160 |
200 |
| Rated primary power |
V |
380 |
380 |
380 |
380 |
380 |
380 |
380 |
| Secondary Voltage |
V |
5.2 |
6.7 |
7.9 |
8.3 |
8.6 |
9.1 |
10.6 |
| Rated frequency |
HZ |
50/60 |
50/60 |
50/60 |
50/60 |
50/60 |
50/60 |
50/60 |
| Max.Short Circuit Current |
KA |
14 |
15 |
16 |
18 |
20 |
28 |
34 |
| Max. weld power |
KVA |
62 |
86 |
170 |
280 |
300 |
330 |
410 |
| Throat |
MM |
400 |
400 |
400 |
450 |
450 |
450 |
450 |
| Max.Froce at electrodes |
N |
6000 |
6000 |
10000 |
10000 |
10000 |
12000 |
12000 |
| Working stroke |
MM |
20 |
20 |
30 |
40 |
40 |
50 |
50 |
| Cooling Water Consumpion 2.5bar |
L/min |
6 |
6 |
8 |
8 |
8 |
10 |
10 |
| Electrodes tip |
MM |
Φ13*45 |
Φ13*45 |
Φ16*45 |
Φ16*45 |
Φ16*45 |
Φ20*45 |
Φ20*45 |
| Arms |
MM |
Φ50*150 |
Φ50*150 |
Φ80*220 |
Φ80*220 |
Φ80*220 |
Φ80*220 |
Φ80*220 |
| Projection Clamping Plate |
MM |
125*125 |
125*125 |
200*200 |
200*200 |
200*200 |
200*200 |
200*200 |
| Max.Welding Capaciry A3 steel |
MM |
2.5+2.5 |
3+3 |
4+4 |
4.5+4.5 |
5+5 |
5+5 |
6+6 |
After-Sales and Support
- Warranty — 12-month warranty against manufacturing defects, with technical support available before and after shipment.
- Support — Video technical support, online troubleshooting, and spare parts supply ensure quick resolution and minimal production downtime.
Frequently Asked Questions
What material thickness can this multi point spot welder handle?
The machine supports a maximum combined welding thickness of 6+6 mm, meaning it can weld two sheets with a total thickness of 12 mm depending on material grade and surface condition. This makes it suitable for most galvanized steel and stainless steel fabrication applications.
Can this spot welder work with both 220V and 380V power supplies?
Yes, the machine is available in both 220V and 380V configurations. Please confirm your workshop voltage when ordering so we can supply the correct model. Both versions maintain the same welding capacity and duty cycle.
Will spot welding damage the galvanized coating?
The multi point head design and controlled welding parameters minimize coating burn-off around the weld zone. This helps maintain corrosion resistance and reduces the need for secondary finishing work on galvanized sheet components.
Request Your Welding Solution
Send us your workpiece drawings and production requirements. Our engineering team will evaluate your application, configure the optimal solution, and provide a detailed proposal with electrode design and automation integration options.
Send Drawing | Request Welding Test | Get Custom Solution
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