What is the difference between an intermediate frequency spot projection welding machine and a power frequency AC welding machine

No matter in the fields of machinery or science and technology, China is achieving perfect improvement and rapid development. Therefore, all kinds of machines have also undergone many improvements and further updates to make them more intelligent and harmonious. On the basis of quality and efficiency, the welding machine has also become an excellent machine with little pollution. Now I will tell you the difference between the characteristics of the medium frequency spot projection welding machine and the power frequency AC welding machine.
1. Features of medium frequency spot projection welding machine
1. The power factor of the intermediate frequency spot projection welding machine is relatively high, which not only reduces the power requirements of the power supply system, but also has almost no secondary loop loss
2. The medium frequency spot projection welding machine has great stability. It is a resistance welding product in the world. Among them, its inverter frequency can reach 1000HZ, and the controllable degree is 20 times that of the traditional spot welding machine.
3. Intermediate frequency spot projection welding machine can save energy and reduce emission, especially it can reduce the large loss of power supply. It is an energy saving and emission reduction machine that is strongly advocated.
4. The operation of the medium frequency spot projection welding machine is very convenient, and it has characteristics. Its mass and volume are 1/3 of the AC voltage transformer.
5. The use of digital mode to control operation can fully improve the current control speed and measurement accuracy during welding.
Second, the difference between medium frequency spot projection welding machine and power frequency AC welding machine
1. Comparison of energy saving effect
The medium frequency spot projection welding machine has great energy-saving effect, high efficiency, low loss, and through direct current output and improved power, so that the energy-saving effect is obvious. The power frequency AC spot welding machine has a large transformer loss and low welding power, which causes a lot of loop loss resources. The impact on the environment is not as good as the medium frequency spot projection welder.
2. Comparison of heating speed
The current of the power frequency AC welding machine is zero, which affects the heating time and makes the heating time longer, while the intermediate frequency inverter spot welding machine has a DC output, and all the heat is relatively more concentrated, so that the heating required The time is relatively short.
3. Comparison of welding quality
The power frequency AC welding machine has a longer thermal efficiency adjustment cycle due to the current crossing zero. When the current percentage is relatively small, the welding time resolution is small, while the adjustment resolution of the inverter DC spot welding machine can reach 0.25 ms, if the zero-crossing time becomes longer, the thermal efficiency will be high under the action of the loop inductance, and the welding heat input will be relatively stable under the DC output.
4. Comparison of equipment
The transformer of the intermediate frequency spot projection welding machine is relatively small, and the equipment is relatively light and small. The transformer core of the power frequency AC welding machine is relatively large, and the equipment is relatively heavy.