Medium Frequency (MFDC) Spot And Projection Welding Machines

We offer our clients with a comprehensive range of medium frequency spot and projection welding machines (MFDC). These machines are utilized for the heavy and special welding processes. The specification of the machines is microprocessor control unit, air switch and foot pedals. In addition, these machines have the features like proportional valve, double hand control, adjustable stroke etc.

Medium Frequency Spot And Projection Welding Machines

We provide medium frequency spot and projection welding machines. Medium frequency direct current machines use an inverter, powered from a 3 phase supply in which the current is rectified using diodes and then chopped by means of IGBT’s into high frequency alternating current. This alternating current is then transformed by the welding transformer and is again rectified. DC current is thus obtained at the secondary side in to the parts to be welded.

The medium frequency spot and projection welding machine (MFDC) load is evenly distributed across all three phases. This allow equal load to be drawn from each line, thus reducing peak draw on any one line. The price of MFDC machines is higher than the conventional Alternating current (AC) machines but users will get advantages such as three phase balanced loading, weight reduction in transformer, about 20 to 25% less power requirement as compared to AC machines, better control over time and uninterrupted energy input into the parts to be welded.

Advantages

Three phase machines.
Precise weld current control.
Energy saving.
Efficient welding of large range of materials.

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