Different types of inverters are used for various types of welding : for argon-arc welding, for manual welding, for plasma and semi-automatic cutting.
Inverter welding is an actively implemented development that provides stable combustion, regardless of current fluctuations in the power grid, and easy ignition. What is the secret of such crazy popularity of inverter devices?
Inverter welding guarantees a smooth and high-quality weld. The welding apparatus includes a power circuit block, which is based on MOSFET transistors and a stabilization inductor, which reduce the ripple of the rectified current. An alternating electric current is supplied to the rectifier, after which the inverter module converts the direct current to high-frequency, then it supplies it to the welding transformer. The unique structure of the apparatus allowed several times to reduce the weight of the transformer, to make it easier and more mobile to operate. And bring efficiency to 90 percent.
Inverter welding is simply indispensable for home use, very often it is used in construction, auto repair shops, and in the installation of lightweight metal structures. Even a person without special education will be able to work with such an apparatus, it is enough to have only general knowledge and knowledge about welding.
Inverter welding: advantages
- automatic regulation of the welding arc;
- increased protection against electric current fluctuations, smooth sine (high quality current);
- maximum efficiency, minimum weight;
- automatic storage of frequently used welding modes.
Each owner of the inverter welding should be at hand. Yes, it is needed infrequently, however, there are times when you simply cannot do without it. Unfortunately, a lot of money needs to be paid for a good device. There is a solution - this is to assemble the inverter apparatus with your own hands. DIY inverter welding is available to everyone.
If you have at least a little desire and the ability to read and solder circuits, you can assume that 50% of the work has already been done. In the process of assembling inverter devices, semiconductor parts are used: capacitors, transistors, diodes, and so on.
The inverter apparatus consists of three basic modules: input rectifier; inverter module; output rectifier. The input rectifier is made of powerful domestic diodes (for example, DL 112). Next, the drive comes into operation, which is a capacitor designed for a voltage of at least 300 V. Then the inverter module comes into operation, containing a high-frequency transformer that generates unipolar or bipolar pulses. Parts of the device work under heavy load, therefore emit a lot of heat. In this matter, it will not be superfluous to think about using a cooler and powerful radiators that dissipate the released heat. All connections must be reliable, and the case itself is insulated.
Currently, inverter welding is considered the best welding machine . Reviews about this device in most cases are positive.