MFDC Retrofit & NF/MF Conversion

Turnkey retrofit solution that converts existing NF (50/60 Hz) spot welding systems to MFDC (1000 Hz medium-frequency) technology. Without replacing the machine, energy efficiency, weld quality, and equipment lifespan are significantly improved.

MFDC Retrofit & NF/MF Conversion Projects

Upgrade your welding technology without stopping your production line.

NF (50/60 Hz) frequency-based spot welding systems carry significant disadvantages in terms of energy consumption, weld quality, and equipment reliability compared to MFDC (1000 Hz medium-frequency) inverter technology. At ISI-Türkiye, we replace the control and power electronics components with MFDC technology while preserving the mechanical infrastructure of your existing system.

Conversion Scope:

• Assessment and technical analysis of existing NF welding machine

• MFDC inverter and control cabinet commissioning

• Robot/PLC integration and program optimization

• Reconfiguration of welding parameters

• Field tests and commissioning

• Training for operators and maintenance personnel

Achieved Benefits:

✓ 30–50% energy savings

✓ Shorter welding cycle, higher production speed

✓ Improved welding nugget quality and consistency

✓ Reduced electrode wear and maintenance cost

✓ Preservation of existing robot and equipment infrastructure

✓ High efficiency gains at low investment cost

Advantages of MFDC Conversion

Energy Savings

MFDC technology delivers 30–50% energy savings compared to NF systems — reduce your energy costs quickly.

Superior Weld Quality

1000 Hz welding current ensures more uniform heat distribution and homogeneous nugget formation.

Existing Line Preserved

Mechanical infrastructure is unchanged — only control and power electronics are renewed for a low-cost upgrade.

Reduced Maintenance Cost

MFDC systems reduce electrode wear and extend maintenance intervals — lowering the total cost of ownership.

Fast Commissioning

Integration into existing infrastructure allows retrofit projects to be completed quickly with minimal downtime.