Welding is a type of production activity that is used to combine all kinds of parts in industries such as industry and construction. And welding devices are a means for the production of the above work. Consumers of such units are car services, construction organizations, manufacturers of building structures, machine -building plants, as well as railway plants. Among other things, without welding machines, it is difficult to imagine the functioning of construction, repair and maintenance sections, shipbuilding. Therefore, it is no coincidence to be a welder today is prestigious. The choice of welding unit depends on the tasks and requirements for the final result. The main parameters are the thickness of the material, the volume of work, the scope of the use of the structure. If we talk about the physics of the welding process, then I must say that all materials are welded through electrodes. This method of combining the material is simple and safe. This is due to the fact that this method does not require the use of gas, so work can be done not only in the open air, but even in the wind. Electrode, in turn, is coated wire. To arouse the arc, it will be enough to touch the end of the product with the end of the product and immediately take it by about three, four centimeters. When performing work on alternating current, there is no difference to which clamp the electrode and product are attached. But with direct current, a “plus” of the power source when connecting to the product is needed. The rapid movement of the electrode will lead to the seam will be narrow and loose. With a too slow motion, the seam will overheat and the metal will be too much. The optimal seam width is from six to fifteen millimeters.
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