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| Categories | Spot Projection Welding Machine |
|---|---|
| Supply Ability: | 5 sets/month |
| Rated Capacity: | 100/160/200/250 KVA |
| Power Supply: | 3-Phase AC 380V (220V available on request) |
| Condition: | New |
| Function: | High-efficiency resistance spot and projection welding |
| Delivery Time: | 25-35working days |
| Max Welding Thickness: | 5.0+5.0 mm (DN(B)-200 model) |
| Machine Type: | Copper Spot Welding Machine |
| Certification: | ISO, CE, RoHS |
| Price: | $14,000-24,000 / set |
| MOQ: | 1 set |
| Welding Material: | Copper wire, sheet, pipe; low-carbon steel, stainless steel, coated steel |
| Brand Name: | Xinwei |
| Packaging Details: | wooden box |
| Duty Cycle: | 50% |
| Place of Origin: | Sichuan, China |
| Payment Terms: | L/C,D/A,D/P,T/T |
| Product Name: | Medium Frequency Resistance Spot Welding Machine 100KVA Copper Wire Welding |
| Warranty: | 1 Year |
| Company Info. |
| Chengdu Xinwei Welding Technology Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
This medium frequency resistance spot welding machine, rated at 100KVA, is a fixed spot and projection welding system engineered for high-efficiency copper wire welding. It integrates a rigid tree-style frame, linear guide upper electrode movement, and capacitive discharge technology to deliver precise, repeatable weld points with minimal deformation. Designed as a stationary unit where the workpiece moves, it is ideal for production lines requiring stable output and consistent weld quality.
Built for industrial environments, this spot welder handles low-carbon steel, stainless steel, coated steel, and non-ferrous metals including copper wire, sheet, and pipe. With a 50% duty cycle and fully water-cooled welding transformer, it supports continuous operation in demanding automotive, hardware, and household appliance manufacturing. The foot-switch control reduces operator fatigue while maintaining high production throughput.
The tree-style frame with multiple reinforcing ribs resists impact and minimizes deformation during welding, ensuring stable electrode alignment and accurate weld points even under continuous heavy-load operation. This translates to fewer defective welds and reduced rework costs.
The upper electrode moves vertically on precision linear guides with high repeatability, delivering consistent weld positioning every cycle. This improves weld uniformity across production batches, lowering scrap rates and enhancing final product reliability.
Capacitive charge-discharge technology shortens welding time significantly, allowing faster cycle rates without compromising joint strength. Production output per shift increases, directly improving manufacturing profitability.
An electrical proportional valve enables precise, real-time adjustment of welding pressure, accommodating different material thicknesses and joint configurations. Operators achieve optimal weld parameters faster, reducing setup time and material waste.
Air pressure and water pressure switches with alarm functions prevent operation under insufficient cooling or air supply, protecting the equipment from damage. This reduces unplanned downtime and extends machine service life, lowering total ownership costs.
The main welding circuit uses a fully water-cooled resistance welding transformer and rectifier, providing strong output power while maintaining energy efficiency. Lower power consumption per weld reduces operational expenses, and the robust cooling design supports sustained high-duty-cycle production.
| Industry | Typical Workpiece | Welding Mode |
|---|---|---|
| Automotive Manufacturing | Nuts, studs, brackets, sheet metal panels | Projection welding, spot welding |
| Electrical & Copper Wire Industry | Copper wire, copper lugs, busbars, cable joints | Spot welding, butt welding |
| Hardware & Fastener Production | Bolts, nuts, washers, rivets | Projection welding |
| Household Appliance Manufacturing | Sheet metal enclosures, brackets, heating elements | Spot welding, projection welding |
| General Fabrication | Low-carbon steel sheets, stainless steel parts, pipes | Spot welding |
The machine operates by clamping the workpiece between two copper electrodes, where a high electrical current is passed through the contact point to generate localized resistance heating. The medium frequency inverter converts input power to a controlled DC welding current, enabling precise heat management and shorter weld times compared to conventional AC machines. The upper electrode descends via an auxiliary cylinder in linear guides, applying consistent pressure through an electrical proportional valve. The heated material fuses under pressure, forming a solid nugget. The secondary circuit uses a fully water-cooled transformer and rectifier to maintain high output and thermal stability. A foot switch triggers the cycle, allowing hands-free operation and rapid production cycling.
| Parameter | Unit | DN(B)-100 | DN(B)-160 | DN(B)-200 | DN(B)-250 |
|---|---|---|---|---|---|
| Rated Power at 50% | KVA | 40 | 63 | 80 | 100 |
| Rated Primary Power | V | 3φAC 380V | 3φAC 380V | 3φAC 380V | 3φAC 380V |
| Max. Short Circuit Current | KA | 30 | 35 | 45 | 45 |
| Duty Cycle | % | 50 | 50 | 50 | 50 |
| Max. Force | N | 6000 | 6000 | 10000 | 15000 |
| Electrode Length | mm | 450 | 450 | 450 | 500 |
| Working Stroke | mm | 80 | 80 | 80 | 80 |
| Cooling Consumption | L/min | 20 | 20 | 20 | 20 |
| Max. Welding Capacity | mm | 3.0+3.0 | 4.0+4.0 | 5.0+5.0 | 6.0+6.0 |
| Weight | kg | 500 | — | — | — |
It is designed for low-carbon steel, stainless steel, coated steel, and non-ferrous metals including copper wire, sheet, and pipe. It also supports plate-to-plate welding, projection nuts, and bolt welding.
The maximum welding capacity is 5.0+5.0 mm for the DN(B)-200 model. For lighter production needs, the DN(B)-100 handles 3.0+3.0 mm, and DN(B)-250 supports up to 6.0+6.0 mm, allowing flexibility across workpiece sizes.
The machine operates on 3-phase AC 380V power input, with 220V available for certain configurations. Please confirm your local supply voltage when ordering to ensure correct setup.
Yes, an electrical proportional valve enables precise adjustment of welding pressure, accommodating various material types and thicknesses. This allows operators to optimize weld quality for each application.
We offer 1-year warranty, field installation, commissioning, and training, plus video technical support and online assistance. Free essential spare parts are included, and our overseas teams in Southeast Asia and South America provide on-site service.
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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