The HF-25 AC Spot Welding Machine (100KVA) is an industrial-grade resistance welding solution designed for heavy-duty metal fabrication. Utilizing a high-output power frequency AC transformer, this machine provides the necessary instantaneous current to create high-strength fused joints in low carbon steel, stainless steel, and galvanized sheets. It is the ideal choice for factories seeking a reliable, low-maintenance workhorse for automotive parts, electrical enclosures, and sheet metal production lines.
Core Selling Points & Transactional Value
100KVA High-Power Output for Thick Plates
Equipped with a high-capacity transformer, it delivers rapid thermal fusion for metal plates ranging from 3+3mm to 5+5mm.
Pneumatic Precision for Consistent Quality
The cylinder-driven electrode system ensures stable, adjustable pressure (0.5-0.7 MPa), eliminating the variability of manual foot-pedal machines.
Industrial-Grade Water Cooling System
Both electrodes and the transformer feature internal water cooling to prevent overheating during high-frequency production, extending the equipment's lifespan.
Minimal Maintenance Costs
The AC resistance structure is straightforward and highly reliable, making it one of the most cost-effective industrial resistance spot welding machines on the market.
Technical Specifications
| Item | Parameters |
| Rated Capacity | 100 KVA |
| Input Voltage | 380V / 50Hz |
| Max Short-circuit Current | 20–30 KA |
| Max Electrode Pressure | 2500–7000 N |
| Welding Capacity | 3+3 mm ~ 5+5 mm (Mild Steel) |
| Cooling Method | Water Cooling |
Application Industries
Automotive Parts
Reinforcement plates, seat frames, and bracket assembly.
Electrical Enclosures
Mass production of power distribution cabinets and switchgear boxes.
Appliance Manufacturing
External shells for washing machines, dryers, and HVAC units.
Hardware & Tools
Precision welding for heavy-duty hinges, handles, and metal shelving.
Solving Your Production Challenges
Struggling with weak welds?
Our pneumatic pressure control combined with adjustable pulse timing ensures every joint meets pull-out strength standards.
High labor turnover?
The intuitive digital interface allows new operators to become proficient in minutes, reducing training time.
Frequent machine downtime?
The heavy-duty AC transformer and water-cooled electrodes are built for 24/7 continuous operation in harsh industrial environments.
Certifications
We have served over 5,000+ customers worldwide, and our long-term partners include Tesla, BYD, and Siemens.
Over 50+ Fortune 500 companies.
Our Partners
40+ Patents and 2 National Software Copyrights, 10,000㎡ Factory with 100+ skilled employees.
FAQ
01.Can this HF-25 AC Spot Welding Machine weld 5mm stainless steel?
02.Is the electrode cooling system included?
03.How does it compare to an Inverter DC welder?
04.Are you a manufacturer or a trader?
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