Portable Spot Welding Machine Automotive Resistance Hand Gun DN2 Series

Product Overview

The DN2 Series portable spot welding machine is a mobile resistance welding unit engineered for on-site automotive repair and metal fabrication tasks. By integrating the power transformer, pneumatic actuator, recirculating cooler, and intelligent controller into a single suspended frame, this system delivers the full capability of a stationary spot welding station directly to the workpiece. It eliminates the need to move large or immovable components, providing repair shops and production lines with a flexible and efficient welding solution.

Designed for continuous industrial operation, the unit features a versatile hand-operated gun connected through heavy-duty flexible cables, allowing operators to reach confined spaces and perform precise spot welds on vehicle bodies, frames, and structural assemblies. With adjustable arm configurations and programmable welding parameters, the DN2 Series adapts to diverse sheet metal thicknesses and material combinations, ensuring consistent nugget quality across demanding applications.

Key Technical Advantages

Suspended Modular Architecture for Superior Reach

The transformer, pneumatic circuits, and controller are consolidated into a compact mobile housing with a spring balancer, enabling near-zero-gravity gun movement. This design markedly expands the working radius, letting operators weld large assemblies without repositioning the equipment.

Programmable Force-Current Synchronization

Each welding stage (squeeze, weld, hold, off) is timed by the digital controller, ensuring current is discharged only after electrode pressure reaches the preset level. This synchronized control guarantees uniform fusion zone formation and repeatable joint quality.

Closed-Loop Recirculating Cooling System

An internal water recirculation unit continuously cools the transformer and thyristors, maintaining stable output during extended high-duty-cycle runs. This thermal management extends component service life and reduces downtime caused by overheating.

Multi-Pulse Welding for Advanced Materials

The controller supports multi-pulse and tempering sequences, addressing the demands of high-strength steel, galvanized sheets, and dissimilar thickness stacks. Operators can fine-tune parameters to prevent spatter and achieve clean, strong welds.

Configurable Gun and Rapid Plant Integration

Straight and offset arm assemblies, along with multiple length options, provide access to tight joints and complex geometries. Standard pneumatic and electrical interfaces allow quick hookup to shop utilities, minimizing installation time and speeding up production startup.

Applications

Working Principle

Technical Specifications

After-Sales and Support

• Warranty Coverage — 12-month warranty on the complete unit with free spare parts for covered defects during the warranty period.
• Remote Technical Support — Video-based troubleshooting and online assistance from our engineering team to minimize production stoppage.
• On-Site Commissioning — Field installation, setup, and operator training available at your facility to ensure correct usage from day one.
• Global Service Network — Dedicated support coverage in South America, Southeast Asia, and other key markets with local technical teams.
• Spare Parts Availability — Consumables such as electrodes, arms, and cooling components are stocked for rapid dispatch worldwide.

Frequently Asked Questions

What sheet metal thickness can this machine weld?

Depending on the model and arm configuration, the DN2 Series can weld mild steel sheets from 1.2+1.2 mm up to 5+5 mm with minimum arm length, and up to 20+20 mm for cross-wire applications, covering typical automotive and fabrication needs.

Can the welding arms be changed for different applications?

Yes, the gun supports interchangeable straight and offset arms with various lengths and strokes, allowing you to adapt the tool for confined spaces, deep reaches, or extended work envelopes.

Does the machine require a dedicated water supply?

No. The unit is equipped with a built-in recirculating cooling system, so it operates independently of external water sources, which simplifies installation and enables true portability across work sites.

Is operator training provided with the machine?

Yes, we supply detailed operation manuals, video guides, and optional on-site commissioning training to ensure your crew can operate the equipment safely and productively.

What power supply is required?

All models operate on a 380V supply at 50Hz or 60Hz, compatible with standard industrial electrical systems found in most fabrication and repair facilities.

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