DESCRIPTION
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 again rectified. DC current is thus obtained at the secondary side in to the parts to be welded.
The MFDC welding machine 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.
APPLICATION
Roll welding is widely applied to light gauge welding of sealed container of oil drum, can, heating radiator, airplane and fuel tank, rocket and missile. In general, the welding thickness is within 3mm of single plate.
FEATURE
1. Adopt intelligent microcomputer single piece controller which achieve pure digital setting. Online computer programming, LED digital display, stable performance, convenient modification of the program online.
2. Adopt intelligent microcomputer control welding system. When the voltage fluctuates, it will compensate the welding current automatically to ensure the stability of welding.
3. Adopt digital circuit control; select the components from famous factories in the world to ensure the equipment could operate steadily in the long run.
4. Adopt SEMIKRON from West Germany, IXYS and IR silicon controlled from United States. High precision, long operating life, achieve high stability control of the magnitude of current.
5. The transmission tile axis adopts the latest mercury conductive technology from abroad. State-of –the-art technology with good performance in transmission and conductivity.
6. Welding roll wheel adopts the alloy copper material from Japan. High rigidity, good conductivity.
7. The transformer adopts the high pure silicon steel sheet from Japan, good performance in magnet and electricity conductivity. Low consumption of electricity. Stronger and more stable power.
8. Welding mold and the connection of the whole machine uses the mosaic connection. Easy to be assembled and disassembled.