Industrial Metal 100Kva Aluminum Spot Welder Projection Resistance Long Arm

This industrial-grade Long Arm Spot Welding Machine is built on our proven DTN series platform, offering a high-capacity, customized welding solution with a robust 100KVA power rating. Its defining feature is an extra-long welding arm, specifically engineered for large workpieces, complex geometries, or applications in deep cavities and corners inaccessible to standard machines. A versatile performer, it delivers high-quality spot welds on aluminum, low-carbon steel, stainless steel, and various non-ferrous metals, and is equally capable of projection welding between sheets, and between sheets and nuts/bolts. The combination of high power and a custom structure equips it to handle thicker materials and demanding industrial welding challenges.

1. High Power & Custom Long-Arm Structure

   • Powerful Core: Powered by a high-capacity 100KVA welding source, it delivers ample, stable energy for welding thick plates and highly conductive materials like aluminum.

   • Extended Work Envelope: The single-sided C-frame combined with the custom long arm provides deep-throat capacity and a large working area, perfectly solving accessibility issues for special workpieces and offering exceptional application flexibility.

2. Precision Pressure Control & Capacitor Discharge Technology

   • Intelligent Force Adjustment: Features an electro-pneumatic proportional valve for high-precision, digital linear control of welding force, ensuring accurate settings and excellent repeatability.

   • Capacitor Discharge Welding: Utilizes Capacitor Discharge (CD) technology with ultra-short weld time (milliseconds), minimal heat-affected zone, and concentrated energy. Ideal for fast-conducting materials like aluminum and copper, it significantly reduces workpiece distortion and offers high welding efficiency.

3. High-Speed Response & Rigid Construction

   • Fast & Smooth Actuation: A combination cylinder with an aluminum alloy barrel, low-resistance seals, and a pilot-operated high-flow valve ensures rapid, smooth electrode actuation and return, enabling high cycling speed and productivity.

   • Maximum Rigidity Assurance: The overall high-rigidity design with internal rib reinforcement minimizes frame deformation during welding. An auxiliary cylinder on the upper electrode allows for continuous, precise adjustment of the workpiece handling stroke, guaranteeing absolute process stability.

4. Comprehensive Safety & Reliability

   • Safe Insulation: The insulated pressure cylinder base and upper arm in the secondary circuit provide safe, reliable operation, allowing direct installation on various fixtures without short-circuit risks.

   • Intelligent Protection System: Integrated air and water pressure switches with audible/visual alarms effectively prevent welding during coolant failure or low air pressure, offering dual protection for both equipment and operation.

5. Efficient Cooling & Ergonomic Operation

   • Efficient Water Cooling: The main circuit uses a fully water-cooled resistance welding transformer and rectifier for high heat dissipation, supporting prolonged continuous operation. Copper/stainless steel water lines with a flow sight glass ensure durability and easy monitoring.

   • Ergonomic Control: Standard foot switch operation aligns with user habits, achieving high production efficiency while significantly reducing operator fatigue.

The Upper Electrode

The Pressure Component

Gas Storage Tank

Waterway Components