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DN-25kw Spot Welding Machine
Products Description
The DN-25kw Spot Welding Machine is a high-power resistance spot welding machine designed specifically for industrial sheet metal welding. Utilizing efficient and energy-saving technology, it offers high weld strength, aesthetically pleasing results, and easy operation. It is widely used in industries such as automotive manufacturing, hardware and appliances, and sheet metal processing.
Product parameters
| Model: | YDN 25 |
| Input | AC 380 V( 2 PH) |
| Power | 25 ( KW) |
| Load rate | 0.25 |
| Pressure | 5 - 8 ( Mpa) |
| Upper electrode stroks | 50 ( mm) |
| Lower electrode stroke | 0 ( mm) |
| Cooling | Natural cooling |
| Net weight | 165 ( KG) |
| Volume | 93 * 55 * 130 |
| Electrode extension distance： | 400 ( mm) |
| Distance between upper and lower electrodes： | 250 ( mm) |
Main Features
1. The DN-25kw Spot Welding Machine is a resistance welding machine, which is controlled by a microcomputer.
2. The welding principle is to use the resistance heat and a large amount of plastic deformation energy of the welding area itself to form a metal bond close to the lattice distance between the two metal atoms that are separated and expressed, and produce a sufficient amount of common grains on the joint surface to obtain a solder joint, weld, or butt joint.
3. The current size and welding time can be adjusted, and the operation is simple.
General troubleshooting
|
Phenomenon |
Cause |
Handling Method |
|
No welding current output when foot pedal is pressed |
1. Power switch not turned on |
1. Turn on the power switch |
|
Welding current cannot be automatically cut off |
1. Thyristor damaged |
1. Replace the thyristor |
|
Unstable current output |
1. Grid voltage fluctuation exceeds ±10% |
1. Wait until grid voltage fluctuation is within ±10% before working |
|
Metal spatter |
1. Insufficient electrode pressure |
1. Adjust spring pressure |
Welding Machine Installation
1. The DN-25kw Spot Welding Machine must be placed in a non-slanting location, secured with anchor screws, and grounded with a 10mm² copper core wire.
2. Electrical Installation: This machine uses a two-phase 380V input. Select cables with different wire diameters and circuit breakers based on the power of the welding machine.
10kVA-25kVA: Use 6-16mm² copper core cables and a 40-100A circuit breaker.
25kVA-63kVA: Use 16-25mm² copper core cables and a 100-200A circuit breaker.
Requirements: Ensure the nuts securing the cables are tightened tightly to prevent sparks and overheating. The circuit breaker must be installed approximately 150mm above the ground and at least 3m from the operator. The welding machine input cable must be connected to the terminal marked "INPUT" on the power board inside the machine.
3. Pressure Adjustment for Pedal-Mounted Machines: A pressure spring is installed on the vertical foot pressure lever inside the welding machine. Adjusting the spring pressure adjusts the welding pressure. The start switch is also mounted on this vertical pressure lever.
4. Powering On: Before powering on, check that all components are connected correctly. Then, turn off the air switch and the controller's power switch. Turn off the air switch during extended downtime.
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