Product Specification

DN B Series Medium Frequency Projection Welding Machine 100 250 KVA

Product Overview

The DN(B) series medium frequency stationary projection welding machine delivers reliable joining performance for sheet metal assemblies and threaded fasteners. Built for fabricators producing low-carbon steel, stainless steel, aluminum alloy, and selected non-ferrous components, this resistance welder supports consistent projection welding of plates to nuts or bolts across demanding production environments.

Engineered to streamline high-volume fabrication workflows, this machine enables operators to achieve repeatable weld quality with reduced cycle times. Its stationary frame design, pneumatic actuation, and water-cooled power module make it suited for automotive parts, appliance manufacturing, and general metalworking shops that prioritize output stability and low maintenance.

Key Technical Advantages

Precision Pneumatic Pressure Control

An air cylinder drives the upper electrode, providing adjustable force output for consistent weld penetration. The built-in air reservoir stabilizes pressure fluctuation, which helps maintain uniform joint quality even over extended run cycles.

Adjustable Stroke Configuration

Working and auxiliary strokes are independently adjustable, while the lower electrode height can be repositioned vertically. This flexibility allows quick accommodation of different workpiece thicknesses and fixture setups without time-consuming reconfiguration.

High-Speed Solenoid Actuation

A direct-acting solenoid valve shortens response time, increasing the operating cycles per minute. Reduced airflow loss also supports more efficient energy use and faster throughput in continuous production lines.

Cushioned Motion for Smooth Operation

Pressure head ascent and descent speeds are fully adjustable, minimizing impact on workpieces and lowering operational noise levels. This cushioning effect also reduces mechanical stress on tooling, extending component lifespan.

Stable Secondary Circuit Protection

With an upper insulation design in the secondary circuit, the machine prevents short circuits and allows direct base mounting. This configuration delivers steady electrical isolation for safer operation and simpler floor layout planning.

Durable Cooling and Corrosion Resistance

Waterway components are constructed from copper and stainless steel, offering strong resistance to corrosion. A transparent flow indicator makes coolant circulation visible, helping operators spot issues early and avoid overheating damage.

Applications

Working Principle

Technical Specifications

After-Sales and Support

• Online Technical Support — Our engineers provide remote video assistance and quick response troubleshooting for routine operation questions and process adjustments.
• Field Installation and Commissioning — On-site setup, calibration, and operator training are available to ensure the machine runs correctly from the first day of production.
• Spare Parts Availability — Commonly used consumables and wear parts are stocked, enabling fast replacement without slowing down your production schedule.
• Core Component Warranty — The machine is covered by a one-year warranty on core components, giving buyers added confidence in long-term reliability.
• Machinery Test Reports — Pre-shipment inspection and test reports are provided, verifying the equipment is functional and calibrated before it reaches your facility.

Frequently Asked Questions

What materials can the DN(B) series weld reliably?

This machine handles low-carbon steel, stainless steel, aluminum alloy sheets, and several non-ferrous materials. It is particularly effective for projection welding nuts and small fasteners onto formed plates in automotive, appliance, and general fabrication work.

How does the pneumatic pressure system improve weld quality?

The air cylinder applies force through the upper electrode with adjustable pressure levels. Because an integrated reservoir stabilizes air pressure, each weld receives consistent clamping force, which reduces variability in joint strength across high-volume runs.

Can the machine be adjusted for different workpiece heights?

Yes. Both the working stroke and auxiliary stroke are adjustable, and the lower electrode height can be repositioned. This flexibility allows tooling changes for different sheet thicknesses without major mechanical rework.

What maintenance considerations should I plan for?

Routine checks should focus on waterway flow, electrode tip condition, and air circuit leaks. The visual flow indicator aids quick inspection of coolant supply. Keeping electrode faces clean and re-dressing them periodically will help maintain stable weld quality.

Is operator training required before using this machine?

Basic familiarity with resistance welding is helpful. Our field commissioning service includes on-site training covering machine controls, pressure settings, periodic maintenance tasks, and safety procedures so operators can start confidently.

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