Desktop Precision AC Spot Welding Machine
60HZ Resistance Spot Welding Machine
,380V Resistance Spot Welding Machine
,AC precision spot welder
Desktop Precision AC Spot Welding Machine is designed for accurate welding of small metal components. It provides stable current control, reliable weld quality, and easy operation for electronic parts, hardware, and precision assemblies.
Desktop Precision AC Spot Welding Machine (DN-25T)
Product Overview
The Desktop Precision AC Spot Welding Machine (Model DN-25T) is a compact resistance spot welder designed for high-precision welding of small and delicate metal components. With a 25 kVA AC welding system, stable current control, and a space-saving desktop structure, it delivers reliable, repeatable welds on parts where ordinary welders would cause burn-through, deformation, or damage.
It is especially suitable for welding electrical switches, copper wire connectors, terminal wires, silver contacts, SMD inductors, coils, fuses, and small hardware. The precise welding process achieves strong joints while minimizing heat and mechanical stress on delicate components.
With its high welding precision, stable performance, and efficient operation, the machine is widely used for precision component welding in electronics, electrical appliances, medical devices, instruments, and meters.
How It Works
- 1. The operator positions the small metal components between the electrodes, using a fixture or locator for repeatable placement.
- 2. The welding controller applies a precisely set welding current and welding time through the AC welding system.
- 3. Electrodes close with controlled pressure (up to 750 N) and deliver the current pulse, forming a strong, localized spot weld at the joint.
- 4. The water cooling system removes heat from the electrodes and transformer, keeping welding conditions stable during continuous production.
Welding current and welding time are adjusted according to the material, thickness, and joint requirement, so each component is welded under consistent, repeatable conditions.
Key Features
1. 25 kVA AC Welding System with Stable Current Control. The power-frequency AC welding system delivers a stable, well-controlled welding current, helping achieve consistent nugget formation on small, delicate joints.
2. High-Precision Welding for Delicate Components. Precisely controllable current, time, and electrode pressure minimize heat input and mechanical stress, protecting thin wires, contacts, and coated parts from burn-through and deformation.
3. Compact Desktop Structure. The desktop type design saves floor space and fits directly onto a workbench, making it ideal for electronics workshops, laboratories, and small-batch precision production.
4. Adjustable Electrode Pressure and Stroke. A maximum electrode pressure of 750 N and a 50 mm electrode stroke allow flexible adaptation to different component sizes and joint designs.
5. Water-Cooled Electrodes and Transformer. Water cooling at 4 L/min keeps electrodes and transformer at a stable temperature during repeated welding, extending electrode life and maintaining consistent weld quality.
6. Strong Welding Capability in a Small Body. A maximum short-circuit current of 15 kA provides sufficient energy for copper, brass, and silver contact joints that demand high current density.
7. Easy Operation and Quick Changeover. Welding current and time are set directly on the welding controller, so operators can switch between different products quickly after basic training.
Main Advantages
Consistent, Repeatable Weld Quality. Stable current control combined with adjustable welding time and electrode pressure keeps weld strength consistent from the first piece to the last, reducing rework and quality escapes.
Gentle on Small and Delicate Parts. The precision welding process forms reliable joints while minimizing damage to thin wires, contacts, and heat-sensitive components.
Improved Production Efficiency. Fast electrode action and straightforward parameter setting shorten cycle times and make the machine suitable for both small-batch and repetitive production.
Space-Saving and Easy to Integrate. The compact 810 * 500 * 680 mm desktop body fits into existing production lines, workbenches, and laboratories without dedicated floor space.
Reliable for Precision Manufacturing. With a 25 kVA power system and water cooling, the machine maintains stable performance through long production runs, supporting electronics, appliance, medical device, and instrument manufacturing.
Typical Applications
The desktop precision spot welder is widely used for welding:
- Electrical switches and contacts
- Copper wire connectors and terminal wires
- SMD inductors and coils
- Fuses and small hardware
- Electronic components
- Medical device components
- Instrument and meter components
It provides a practical solution for manufacturers requiring precise, reliable, and repeatable welding of small metal components, helping improve production efficiency and welding consistency.
Suitable Materials
The machine is suitable for small conductive metal joints such as copper, brass, silver contacts, nickel-plated terminals, and thin sheet metal parts. Welding parameters are adjusted according to the material type, thickness, and joint requirement.
Frequently Asked Questions
Q1: What kind of parts is this machine best suited for?
A: It is designed for small, precision metal joints — copper wire connectors, terminal wires, silver contacts, SMD inductors, coils, fuses, and similar small hardware used in electronics, appliances, medical devices, and instruments.
Q2: Why does the machine use water cooling?
A: Repeated precision welding generates continuous heat at the electrodes and transformer. Water cooling at 4 L/min keeps the temperature stable, which extends electrode life and keeps weld quality consistent during long production runs.
Q3: What power supply does the machine require?
A: The standard configuration uses a 2-phase 380 V supply at 50/60 Hz. Please confirm your local supply voltage when ordering so the machine can be configured accordingly.
Q4: How is this machine different from a platform type spot welder?
A: This desktop welder is optimized for small, delicate components welded at the workbench, while a platform type machine with a large table and movable arm is designed for big sheet metal workpieces such as cabinets and enclosures. The right choice depends on your workpiece size and structure.
Q5: What is the delivery time and minimum order quantity?
A: The minimum order quantity is 1 unit. Standard packaging is a wooden case, and the typical delivery time is 5–25 working days depending on the configuration.
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- LSW-1500 Platform Type Non-Marking Laser Welding Machine
Contact PDKJ
Not sure whether this desktop precision spot welder fits your components? Contact PDKJ with your workpiece drawing or sample description, and our engineers will recommend the right welding solution.
WhatsApp: +86 136 1279 3248
Email: pdkj101@gd-pw.com
Website: Contact PDKJ Online
Address: 1-2F, Building 3, Qichen Industrial Park, No. 26 Luxi 1st Road, Liaobu Town, Dongguan City, Guangdong Province, China
