MF DC INVERTER SPOT/PROJECTION WELDER
MF DC Inverter Spot / Projection Welder: Precision Welding with Advanced MFDC Technology
The MF DC Inverter Spot / Projection Welder is a high-precision, energy-efficient welding system designed to deliver both spot welding and projection welding capabilities with the advantages of medium-frequency DC (MFDC) inverter technology. It is optimized for steady, repeatable welds on various metals including mild steel (MS), stainless steel (SS), galvanized steel (GA), aluminium (AL) & alloys, titanium, etc.
Using MFDC inverter control, the welder produces a nearly constant DC output with minimal zero-crossing losses, better power factor, faster current rise times, and accurate control in milliseconds. The result: higher weld quality, reduced energy consumption, less heat-affected distortion, and better results even in tougher or high conductivity materials.
Its construction (stand / press type) is built to be robust with superior stability, low vibration, and sound dampening, making it suitable for industrial shop floor environments with heavy use. The machine is also built for ease of programming, maintenance, and consistent production.
Key Features
- Upside insulation is convenient for other device installation. Lowerside accident like short circuit when installing welding jigs can be prevented.
- Use electro-pneumatic proportional valve. Gas pressure can be set quickly. It is controlled by controller. Easily program, store and recall the welding current, time and pressure.
- DC output reduced the impact of welding current caused by secondary side induction. The power factor is almost 1. Output welding current can be fully constant and no zero crossing. Save the energy and reduce production cost.
- Parallel cooling water route is used in this machine. Every route can be adjusted and displayed separately to check the welding status. Warning function is working through water flow detector.
- Pressure head up and down speed can be adjusted continuously. It reduced the pressure impact to the work piece and reduced noise also.
- All the basic structures are welded by automatic robot. Good anti-vibration and impact rigidity will assure good weld.
SPECIFICATION
| Model Items | MF Inverter DC Spot Welder | MF Inverter DC Spot/Projection Welder | ||||||
|---|---|---|---|---|---|---|---|---|
| Model | DBZ-50SAJ | DBZ-80SAJ | DBZ-160SAJ | DTBZ-50SAJ | DTBZ-80SAJ | DTBZ-160SAJ | DTBZ-320SAJ | DTBZ-480SAJ |
| Rated capacity | 50 kVA | 80 kVA | 160 kVA | 50 kVA | 80 kVA | 160 kVA | 320 kVA | 480 kVA |
| Rated input voltage | 415V / 3Φ | |||||||
| Rated duty cycle | 50% | |||||||
| Frequency | 50 / 60 Hz | |||||||
| Maximum short current (duty cycle) | 25 kA (2.4%) | 33 kA (3.5%) | 52 kA (5.7%) | 25 kA (2.4%) | 33 kA (3.5%) | 52 kA (5.7%) | 76 kA (6.9%) | 86 kA (12.1%) |
| Continuous output current | 3.9 kA | 6.2 kA | 12.4 kA | 3.9 kA | 6.2 kA | 12.4 kA | 19.9 kA | 29.9 kA |
| Maximum pressure | 5200 N | 12000 N | 12000 N | 5200 N | 12000 N | 12000 N | 30000 N | 30000 N |
| Open height × depth (Spot) | 200×600 mm | 200×600 mm | 200×600 mm | 170×400 mm | 165×425 mm | 200×425 mm | 225×450 mm | 225×450 mm |
| Open height × depth (Projection) | – | – | – | 170×300 mm | 165×300 mm | 200×300 mm | 225×450 mm | 225×450 mm |
| Electrode travel | 20 / 60 mm | 20×80 mm | 20×80 mm | 20 / 60 mm | 20 / 80 mm | 20×80 mm | 80 mm | 80 mm |
| Water flow | 15 L/min | 18 L/min | 28 L/min | 15 L/min | 18 L/min | 28 L/min | 28 L/min | 34 L/min |
| Weld capacity (MS) | 3+3 mm | 6+6 mm | 8+8 mm | 3+3 mm | 6+6 mm | 8+8 mm | 8+8 mm | 8+8 mm |
| Weld capacity (AL) | 1+1 mm | 2+2 mm | 3+3 mm | 1+1 mm | 2+2 mm | 3+3 mm | 6+6 mm | 8+8 mm |
| Weight | 215 kg | 380 kg | 620 kg | 215 kg | 380 kg | 580 kg | 1150 kg | 1200 kg |
Frequently Asked Questions
What you should know
What is an MF DC Inverter Spot Projection Welder?
An MF DC Inverter Spot Projection Welder is an advanced resistance welding machine that uses medium-frequency inverter technology to provide precise current control, stable welding performance, and high-quality joints. It is designed for spot and projection welding applications across various industrial sectors.
What are the advantages of using an MF DC Inverter Spot Projection Welder?
MF DC Inverter Spot Projection Welders offer benefits such as faster welding response, improved energy efficiency, consistent weld quality, reduced spatter, and better control over welding parameters compared to conventional welding systems.
Which materials can be welded using an MF DC Inverter Spot Projection Welder?
These welding machines are suitable for materials such as carbon steel, stainless steel, galvanized sheets, aluminum alloys, and other conductive metals used in automotive, fabrication, and manufacturing industries.
Where are MF DC Inverter Spot Projection Welders commonly used?
MF DC Inverter Spot Projection Welders are widely used in automotive components, sheet metal fabrication, electrical equipment manufacturing, appliance production, and precision industrial welding applications.
How does an MF DC Inverter Welder improve welding accuracy?
The inverter-based system provides accurate current regulation and better control of welding time and energy input, helping achieve uniform weld strength and minimize material deformation.