HFDB-100 Servo Medium-Frequency AC/DC Spot Welding Machine
Product Overview
The HFDB-100 Servo Medium-Frequency AC/DC Spot Welding Machine is engineered for manufacturers requiring precise electrode
movement and reliable resistance welding across diverse metal
materials. With a 100 kVA rated capacity and maximum short-circuit current of 30 kA, this machine excels in spot welding and projection welding
applications for steel, stainless steel, galvanized sheet,
aluminum, wire, and conductive components. It also supports
resistance brazing of copper wire and brazing applications
involving silver contacts and copper plates.
The servo-driven configuration ensures controlled electrode
movement and pressure application, making this machine ideal for
production environments where welding repeatability and process
control are critical.
Technical Specifications
| Item | Specification |
|---|
| Model | HFDB-100 |
| Equipment Type | Servo Medium-Frequency AC/DC Spot Welding Machine |
| Welding Process | Resistance Spot / Projection Welding |
| Rated Capacity | 100 kVA |
| Maximum Short-Circuit Current | 30 kA |
| Rated Duty Cycle | 20% |
| Secondary No-Load Voltage | 8.4 V |
| Cooling Water Consumption | 25 L/min |
| Drive System | Servo |
| Main Applications | Spot welding, projection welding, resistance brazing |
| Applicable Materials | Steel, stainless steel, galvanized sheet, aluminum, wire, copper
and conductive components |
Medium-Frequency AC/DC Welding Capability
The HFDB-100 belongs to Haifei's medium-frequency inverter spot
welding equipment range, designed for resistance welding
applications requiring controlled electrical output and repeatable
welding cycles.
The equipment supports:
- Spot Welding: Ideal for joining overlapping metal sheets and conductive
components at defined welding points
- Multi-Point Projection Welding: Suitable for products requiring multiple projection welds or
formed welding points
- Resistance Brazing: Specifically designed for copper wire resistance brazing and
brazing of silver contacts and copper plates
Typical Welding Materials
| Material | Potential Application |
|---|
| High-Strength Steel | Automotive spot welding |
| Hot-Formed Steel | Automotive structural components |
| Low-Carbon Steel | General sheet-metal welding |
| Stainless Steel | Metal assemblies |
| Galvanized Sheet | Automotive and industrial components |
| Aluminum | Lightweight metal assemblies |
| Copper Wire | Resistance brazing |
| Copper Plate | Brazing and conductive connections |
| Silver Contact | Contact brazing and composite contact welding |
Actual weldability depends on material grade, thickness, joint
configuration, electrode design, and welding parameters. Sample
testing is recommended for new applications.
Applications
Automotive Body and Component Manufacturing
The HFDB-100 excels in spot welding high-strength steel and hot-formed steel, as well as conventional steel components used in automotive
manufacturing.
Typical applications include:
- Automotive brackets
- Reinforcement components
- Sheet-metal assemblies
- Structural metal parts
Stainless Steel and Galvanized Components
This machine effectively handles stainless steel and galvanized
sheet metal where controlled resistance welding is essential,
making it suitable for products requiring specific surface
conditions and material characteristics.
Aluminum Components
Aluminum sheet spot welding can be performed with appropriate
electrode configuration and welding parameters. Process validation
through sample welding is recommended before mass production due to
aluminum's unique electrical and thermal characteristics.
Electrical and Conductive Components
The HFDB-100 extends beyond structural sheet-metal welding to
include specialized applications:
- Copper wire resistance brazing
- Copper plate brazing
- Silver contact brazing
- Composite silver contact welding
Key Features
- 100 kVA Rated Welding Capacity: Provides power for a broad range of industrial resistance welding
applications
- Up to 30 kA Short-Circuit Current: Delivers sufficient electrical capacity for demanding sheet-metal
and conductive component applications
- Servo Electrode Drive: Enables precise control of electrode movement for consistent
approach, contact, and pressure behavior
- 20% Rated Duty Cycle: Ensures reliable performance during production cycles with proper
cooling conditions
- Water-Cooled Welding System: Maintains stable operation during repeated welding cycles with 25
L/min cooling capacity
Frequently Asked Questions
What makes the HFDB-100 different from a conventional spot welder?
The HFDB-100 combines a medium-frequency inverter welding system
with servo-driven electrode operation, providing controlled
electrode movement and repeatable resistance welding for precision
applications.
Can the HFDB-100 weld galvanized steel?
Yes. Galvanized sheet is included among the listed application
materials. Welding parameters and electrode configuration should be
optimized based on coating type, sheet thickness, and required
joint strength.
Can it weld aluminum sheet?
Yes. Aluminum sheet is listed as an applicable material. However,
due to aluminum's different electrical and thermal characteristics
from steel, process testing is recommended before mass production.
Can this machine be used for copper wire?
Yes. The specification specifically includes resistance brazing of copper wire among its applications.
Is the HFDB-100 suitable for silver contact welding?
Yes. The product documentation lists silver contact and copper
plate brazing, as well as composite silver contact welding.
What is the required cooling-water capacity?
The published specification requires cooling-water consumption of 25 L/min. The complete cooling system should be configured according to the
actual production environment and machine setup.
Bench Type Medium Frequency DC Spot Welding Machine
