Shanghai Donsun Welding Group Spot Welding Machine Resistance Welding Machine DTM-20K/40K/80K /20K-S/40K-S MFDC Spot Welding Machine
DTM-20K/40K/80K /20K-S/40K-S
Product Overview
Three - phase power supply with balanced input and a
power factor as high as 95%.
· Almost no inductive energy loss in the secondary circuit.
·Functional features and application
· High welding stability.
· Power saving of over 30% and low operang cost.
· Lower welding current and electrode pressure.
· The electrode life is increased by more than double,
reducing electrode grinding me.
· Greatly saves the installation costs of power, water, gas and other
auxiliary facilities.
· Controls and analyzes welding parameters more accurately, quickly and safely.
· Shorter welding me, improving work efficiency and welding quality.
· Wider welding range, with better welding effects on low - carbon steel, stainless steel,
copper, aluminum and galvanized sheets.
| Model | Unit | DTM-20K | DTM-40K | DTM-60K | DTM-80K | DTM-20K-S | DTM-40K-125-S | |
| Rated capacity | KVA | 80 | 160 | 240 | 330 | 80 | 160 | |
| Max Short-circuit Current | KA | 20 | 40 | 60 | 80 | 20 | 40 | |
| Primary voltage | V | 3PH 380 | 3PH 380 | 3PH 380 | 3PH 380 | 3PH 380 | 3PH 380 | |
| Duty cycle | % | 50 | 50 | 50 | 50 | 50 | 50 | |
| Secondary adjustment levels | Stepless | Stepless | Stepless | Stepless | Stepless | Stepless | ||
| Electrode pressure | N | 12000 | 12000 | 18000 | 18000 | 8000 | 8000 | |
| Throat depth | mm | 450 | 450 | 450 | 450 | 430 | 430 | |
| Throat gap | mm | 310 | 310 | 310 | 310 | 300 | 300 | |
| Electrode stroke | mm | 80 | 80 | 80 | 80 | 80 | 80 | |
| Electrode size | Electrode arm | mm | φ80 | φ80 | φ80 | φ80 | φ65 | φ65 |
| Electrode holder | mm | φ30 | φ30 | φ30 | φ30 | φ25 | φ25 | |
| Projection welding pad | mm | 140*160 | 140*160 | 180*200 | 180*200 | 110*130 | 110*130 | |
| Welding thickness | Low carbon steel | mm | 4+4 | 5+5 | 6+6 | 7+7 | 4+4 | 5+5 |
| Stainless steel | mm | 2+2 | 2.5+2.5 | 3+3 | 3.5+3.5 | 2+2 | 2.5+2.5 | |
| Aluminum | mm | 1+1 | 1.5+1.5 | 2+2 | 2.5+2.5 | 1+1 | 1.5+1.5 | |
| Nut welding | Inner diameter | mm | M3-M6 | M3-M8 | M3-M12 | M3-M14 | M3-M6 | M3-M8 |
| Cooling water flow rate | L/min | 12 | 12 | 12 | 12 | 12 | 12 | |
| Size | mm | 1200×880×2050 | 1200×880×2050 | 1200×880×2050 | 1200×880×2050 | 1160×800×1900 | 1160×800×1900 | |
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