Transformer Based Spot Welder
The DTN series transformer based spot welder is produced by Donsun to act as a kind of point and convex dual-purpose welding machine. It is mainly used for welding low carbon steel, stainless steel, and some nonferrous metals. Also, it can realize the projection welding of bolts, nuts and plates.
Our welding equipment is an indispensable machine used for parts welding in different industries such as the vehicles, household appliances, and the metal cabinets, etc.
Technical Parameters
| Type | ||||||
| Input Voltage/ Frequency | 380V/50Hz | |||||
| Rated Capacity | 25KVA | 40KVA | 63KVA | 80KVA | 100KVA | 125KVA |
| Rated Input Current | 66A | 105A | 166A | 210A | 263A | 328A |
| Rated Duty Cycle | 20% | |||||
| Secondary Open Circuit Voltage | 2~4.13V | 2.5~5V | 2.97~5.94V | 3.52~7.04V | 3.66~7.32V | 4.32~8.64V |
| Electrode Arm Extension Length | 450mm | 500mm | ||||
| Horn Spacing | 220mm | 300mm | 350mm | |||
| Upper Electrode Working Stroke | 100mm | |||||
| Max. Electrode Force | 3800N | 5900N | 9700N | |||
| Welding Low Carbon Steel Thickness | 2.5+2.5mm | 3+3mm | 3.5+3.5mm | 4+4mm | 5+5mm | 6+6mm |
| Pressure of Condensed Air | 0.6Mpa | |||||
| Flux of Cooling Water | 120 I/H | 180 I/H | 300 I/H | 480 I/H | ||
| Weight | 198kg | 260kg | 310kg | 320kg | 500kg | 518kg |
| Dimensions | 920×500×1530(mm) | 1020×500×1620(mm) | 1100×580×1780(mm) | 1120×620×1880(mm) | ||
Features
- This series of transformer based spot welder adopts direct pressurizing mechanism to provide outstanding servo performance and high welding speed. Its guide section adopts a low-friction special material. An electro pneumatic valve is directly connected with an air cylinder, which can improve RBI rate and also reduce the loss of air flow.
- This series of transformer based spot welder has the function of adjusting pressure speed. It allows the rate of rise and decline to be regulated at will. Then, it can not only reduce noise and mechanical impact, but also extend the service life of a cylinder.
- The filter cup of a high-performance air circuit system is designed with a cover to prevent fragments from splattering when the cup is broken. Also, it can be protected from external impact. Both cup and shield can be unassembled and maintained easily. The adoption of water-saving type forced circulation cooling method avoids wasting water, and also enormously reduces the consumption of cooling water.
- High-strength structure allows the transformer based spot welder to give strong resistance to shock and vibration. It can effectively prevent an electrode tip from slipping during pressurization, so as to realize high-quality and stable welding.
- A secondary conductor adopts upper insulation method to avoid iron attachment or short-circuit accident of an insulator easily caused in the base installation and welding process.
- The main circuit adopts water-cooled and high power thyristor. The output power is strong, stable and highly reliable.
- Electric circuit features high conductivity and low power loss. In secondary current loop, the upper secondary output of a main transformer adopts multi-layered, high-toughness and high-conductivity copper strip. Additionally, it utilizes U-shaped connection system. Therefore, its service life is significantly improved. The lower secondary output adopts integrated direct connection system to minimize power loss.
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