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| Company Info. |
| Haifei Intelligent equipment Co., Ltd. |
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| Product List |
| Welder Model | Rated Capacity | Power Supply | Maximum primary current | Primary cable specifications | Maximum short-circuit current | Duty cycle | Secondary voltage | Cylinder specifications | Maximum working pressure |
KVA | V/Φ/HZ | A | MM2 | KA | % | V | Φ*L | KN | |
HFDB-50 | 80 | 380/3/50 | 45 | 3*16+2*6 | 18 | 20 | 9 | Φ125*80 | 6000 |
The HFDB-50 is a high-performance Medium Frequency Direct Current (MFDC) spot welding machine engineered for high-precision metal joining. Featuring an 80KVA power rating and a 18KA short-circuit current, the system utilizes advanced inverter technology to deliver millisecond-level precision and stable heat input. Beyond standard stainless and carbon steel, it excels in joining non-ferrous metals and alloys, including copper, silver, and nickel. Specifically optimized for the automotive manufacturing sector, the HFDB-50 ensures superior weld nugget consistency and joint strength for hot-stamped steel, high-strength steel (HSS), and galvanized sheets, as well as high-torque projection welding for nuts and bolts.
Unlike traditional AC welders, MFDC technology provides stable DC output, eliminating "cold welds."
Higher power factor (95%) reduces operational costs and grid impact.
Precise millisecond-level current control ensures a clean surface finish, reducing post-weld cleaning time.
Successfully weld copper-to-aluminum or titanium-to-steel with minimal Heat Affected Zone (HAZ).
Body-in-White (BIW) Components: Precision spot welding for Hot-Stamped Steel and Advanced High-Strength Steel (AHSS).
Fastener Projection Welding: High-torque welding of nuts and bolts onto chassis and door components.
Interior Components: Reliable joining of car seat rails, pillars, and reinforcement brackets.
Galvanized Sheet Processing: Optimized current control to minimize spatter and ensure consistent weld nuggets on coated surfaces.
Wire Harness Terminals: Precision welding of copper wire harnesses
to terminal connectors.
Conductive Connectors: Joining of Copper Busbars, silver contacts,
and various copper/nickel-based alloys.
Energy Storage Systems: Structural assembly of battery packs,
busbar interconnections, and relay components.
Compressor Components: Spot welding of compressor terminals,
brackets, and housing assemblies.
Precision Hardware: Fabrication of instrument components and
stainless steel structural parts.
Dissimilar Metal Joining: Reliable bonding of specialized
combinations such as copper-to-steel or nickel-to-copper.
Utilizes advanced 1000Hz inverter technology to deliver stable DC output. It achieves millisecond-level current control, significantly reducing spatter and ensuring superior weld nugget integrity.
Engineered for excellence beyond standard steel. It is the ideal
solution for high-conductivity
non-ferrous metals (Copper, Silver, Nickel) and high-strength
automotive steels (AHSS/Hot-stamped steel).
The three-phase balanced load and high power factor (up to 0.9) reduce energy consumption and localized power grid impact, lowering your long-term operational costs.
Specifically optimized for high-torque projection welding (nuts/bolts). It delivers the consistent penetration and strength required to meet rigorous global automotive safety standards.
A: MFDC technology provides stable DC output and millisecond-level precision. It ensures higher energy efficiency, minimal spatter, and superior weld consistency compared to AC models.
A: Yes. Its high energy density and concentrated heat input make it ideal for copper, silver, and nickel alloys, ensuring strong bonds without damaging the material.
A: Definitely. It is specifically designed for hot-stamped steel and AHSS, providing the stable penetration required to meet strict automotive safety and strength standards.
A: The HFDB-50 features a rapid current rise time that ensures uniform projection collapse. This results in high-torque resistance and consistent quality in every fastener joint.
A: Yes. It is automation-ready with standard PLC/IO interfaces, making it easy to sync with industrial robots or automated production cells for high-speed operation.
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