DN Series Resistance Spot Welding Machine 25~150KVA

DN Series Resistance Spot Welding Machine 25~150KVA

The DN Series Resistance Spot Welding Machine is a robust and precision-engineered AC spot welder designed for industrial metal joining applications. Available in power ratings from 25KVA to 150KVA, this pneumatic spot welding machine delivers consistent, high-quality welds for a wide range of materials including mild steel, stainless steel, galvanized sheets, and other ferrous metals. Ideal for hardware, automotive, appliance, and structural fabrication industries, the DN Series combines durability, intelligent control, and ease of operation.

Product Overview:

The DN Series AC Resistance Spot Welder operates by transforming standard mains supply into low-voltage, high-current power. This current is transmitted through copper electrodes to the contact point between two metal workpieces. Due to electrical resistance, intense localized heat is generated, melting the metal surfaces and forming a strong, reliable weld nugget upon cooling. This process ensures fast, clean, and efficient spot welding without filler materials.

Our machines are built with a heavy-duty welded steel frame and advanced microprocessor controls, making them suitable for both high-volume production and precision workshop tasks.

Machine Structure & Components:

• Heavy-Duty Welded Steel Frame – Ensures stability and reduces vibration during operation.
• Pneumatic Rocker Arm with Adjustable Throat Depth – Allows flexibility in workpiece size and positioning.
• Welding Transformer – Dual voltage compatible (220V~440V, two-phase, 50/60Hz) for global use.
• Solid State SCR Contactor – Maintenance-free and ensures reliable switching.
• Intelligent Control Panel (SUN18B Microprocessor) – Features soft-touch keys, LED displays, and dual current/time settings.
• Electrode Holder & Extension Arms – Standard length up to 560mm for deeper throat access.
• Two-Stage Footswitch – Enables weld initiation and optional dual current control.
• Air Filter & Pressure Regulator – Maintains consistent pneumatic force for electrode pressure.
• Cooling System – Optional water-cooling unit available for extended cycling.

Technical Parameters:

Key Notes:

• Weldable Materials: Primarily designed for welding iron, stainless steel, and other ferrous metals (compatible with most common hardware metals).

• Power Compatibility: The dual-voltage transformer (220V-440V) allows for easy adaptation to different regional power standards (consult technical support for voltage conversion).

• Duty Cycle: 50% duty cycle ensures continuous operation in high-demand production environments without overheating.

*Note: All models operate on 50/60Hz frequency and are compatible with two-phase 220V~440V supply.

Key Features & Advantages:

• Intelligent Microprocessor Control – SUN18B system supports dual current, dual weld time, upslope, and pulsation functions for adaptive welding.
• Digital Phase Shift Current Control – Adjust welding current from 1% to 99% for precise heat management.
• Wide Welding Range – Capable of welding sheet thickness from 0.5mm up to 5mm+5mm (total 10mm overlap).
• High Duty Cycle – Designed for 50% duty cycle under industrial operating conditions.
• Multi-Metal Compatibility – Suitable for carbon steel, stainless steel, aluminum, and coated metals.
• Easy Integration – Can be used in manual setups or automated production lines.
• User-Friendly Interface – Clear LED indicators and programmable memory for repeatable welding jobs.
• Energy Efficient – SCR-based power control reduces electrical consumption.

Reference Photo in details:

Applications:

The DN Series 25~150KVA Resistance Spot Welding Machine is versatile and widely applicable across multiple industries, thanks to its ability to weld various metals and adapt to different workpiece thicknesses:

• Hardware Manufacturing: Ideal for welding hardware components such as hinges, brackets, fasteners, locks, and tools.

• Automotive Industry: Suitable for spot welding auto parts, including body panels, frames, brackets, and electrical components (compatible with iron and stainless steel materials).

• Electrical & Electronic Equipment: Used for welding electrical enclosures, transformer cores, motor frames, and electronic component brackets.

• Furniture Manufacturing: Perfect for joining metal furniture parts, such as chair frames, table bases, and cabinet hardware.

• Sheet Metal Fabrication: Excels in welding sheet metal products, including ducts, enclosures, trays, and custom sheet metal assemblies.

• Construction & Building Materials: Applicable for welding construction hardware, steel structures, and building components (e.g., door/window frames, railings).

• Appliance Production: Suitable for welding household appliance parts, such as refrigerator door frames, washing machine cabinets, and air conditioner brackets.

Why Choose DN Series Spot Welder?

• Superior Weld Quality: Advanced microprocessor control and precise current adjustment ensure consistent, strong welds with minimal spatter and deformation.

• High Production Efficiency: Fast welding cycles, user-friendly controls, and reliable performance reduce production time and increase output.

• Durability & Low Maintenance: Robust construction and maintenance-free components lower operational costs and extend service life.

• Versatility: Wide range of models (25~150KVA) and adjustable parameters adapt to diverse materials, thicknesses, and applications.

• User-Friendly Design: Intuitive controls, flexible adjustments, and ergonomic features enhance operator comfort and reduce training time.

Whether you’re a small hardware shop or a large-scale manufacturing plant, the DN Series 25~150KVA Resistance Spot Welding Machine delivers the performance, reliability, and flexibility you need to elevate your metal joining processes. Invest in the DN Series today and experience the difference in welding quality and production efficiency.