DB200H Silver Contact Spot Welding Machine
Product Overview
Silver contacts are small electrical components with highly
process-dependent welding requirements. The DB200H maintains
precise contact positioning during electrode pressure while
controlling welding current and heat input to achieve optimal joint
strength without excessive marking or deformation of copper
carriers.
This three-phase AC input system with 1000 Hz medium-frequency
inverter DC output provides programmable welding specifications for
different contact assemblies. The rigid machine structure ensures
electrode alignment during pressurization, making it ideal for
manufacturers requiring repeatable resistance welding processes.
Technical Specifications
| Parameter | Specification |
|---|
| Equipment Name | Spot Welding Machine |
| Model | DB200H |
| Product Type | Silver Contact Spot Welding Machine |
| Rated Duty Cycle | 20% |
| Transformer Capacity | 240 KVA |
| Cylinder Bore / Stroke | 200 mm / 110 mm |
| Maximum Working Pressure | 15,000 N |
| Maximum Primary Current | 250 A |
| Current Adjustment Range | 0-99% |
| Transformer Insulation Class | Class F |
| Maximum Secondary Short-Circuit Current | 58 KA |
| Lower Electrode Arm Deflection | <0.1 mm at maximum cylinder pressure |
| Output Frequency | 1000 Hz |
Technical specifications are based on DB200H product specifications
provided by Haifei. Actual machine configuration may vary according
to approved technical proposals and application requirements.
Designed Applications
The DB200H is primarily designed for welding silver or copper
contacts onto formed copper electrical parts. Typical workpieces
include:
- Silver contacts on copper contact arms
- Copper contacts on conductive copper parts
- Electrical contact components
- Contact assemblies for household electrical products
- Low-voltage electrical contact components
- Customized copper contact assemblies
Final machine configuration depends on contact material, copper
carrier, part thickness, contact geometry, welding position, and
required joint strength. Haifei recommends testing representative
workpieces before finalizing welding parameters, electrodes, and
fixtures.
Key Features
1000 Hz Medium-Frequency Inverter DC Welding: Converts three-phase AC input into controlled DC output for
precision resistance welding of electrical contact components.
64 Welding Specifications: Controller stores up to 64 welding programs for different contact
products, eliminating reliance on single fixed settings.
Three-Stage Heating Control: Supports preheat, weld, and temper stages with incremental or
decremental control as required.
High Welding Current Capability: Maximum secondary short-circuit current of 58 KA, selected
according to actual contact assembly requirements.
Stable Mechanical Structure: Rigid machine body resists vibration and impact, reducing
electrode movement during cylinder pressurization.
Programmable I/O for Automation: Enables communication with PLCs and robotic systems for
integration into customized production equipment.
Production Data Traceability: Stores welding-related production data for MES integration and
production traceability requirements.
Common Welding Problems & Solutions
Contact Position Shift: Fixture must securely hold both copper component and contact
before welding to prevent movement.
Contact Movement During Pressurization: Controlled electrode approach and adequate fixture support prevent
pre-weld shifting.
Surface Indentation: Electrode shape, force, and welding energy optimization maintains
copper part appearance.
Insufficient Joint Strength: Proper current settings, electrode force, and surface preparation
ensure adequate welding strength.
Excessive Heating: Multi-stage heating control prevents marks and deformation of
copper carriers.
Electrode Wear: Established inspection and maintenance intervals maintain
consistent contact area and current concentration.
Frequently Asked Questions
What materials can the DB200H weld? Primarily silver or copper contacts welded to copper electrical
parts. Material combinations and thickness should be evaluated
before production.
What is the welding frequency? 1000 Hz medium-frequency inverter DC output.
How many welding programs can be stored? Up to 64 sets of welding specifications for different products or
process conditions.
Can it weld contacts for circuit breakers and relays? These applications can be evaluated based on contact material,
copper carrier, joint structure, electrode access, and production
output requirements.
How is surface indentation controlled? Through optimized electrode geometry, welding force, and heat
input developed according to appearance requirements.
Can it integrate with PLC or robot systems? Yes, through programmable I/O functions for complete production
process automation.
