What are welding machines for domestic use?
Household welding machines are indispensable for building and repair work, when almost every day there is a need for the manufacture of reinforcing mesh, installation of a greenhouse, repair of an automobile body and many other items.
According to the existing classification, devices with a current strength of up to 200 A can be assigned to the household group, which allow working with a metal not more than 8 mm thick. Before choosing which, for example, we need a welding machine for a dacha, consider the existing versions of them:
- transformer portable welding machine AC.It is designed for welding ferrous metals and is best suited for novice welders;
- transformer universal welding machine DC.Used for a variety of jobs. They can also weld non-ferrous metals and stainless steel;
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small-sized welding machine - semi-automatic. It is used for welding of iron, aluminum and steels. The active element is not a melting electrode, as in the previous species, but a welding wire, which, if necessary, enters the welding point together with the gas( or without it);
- portable welding machine - inverter. It has a light weight( from 2.5 kg) and a small size. Can work both from autonomous power sources, and from the power grid. It is possible to smoothly adjust the amperage;
- welding rectifier .It consists of a semiconductor rectifier unit and a transformer. The principle underlying its work allows even beginners to achieve a quality weld - a continuous electric arc with a stable characteristic evenly melts the metal.
What can the type of welding machine tell us?
After the above, it is clear that to select a welding machine, first of all, it is necessary to decide what metals will be used for the work( this will determine the type of the required device), what will be the thickness of the welded surfaces, and the quality and purpose of the seam( this will determine the strengthcurrent of the selected device).
When selecting a welding machine, it is also necessary to take into account the value of the MF index( on-off time), which characterizes the device's ability to work continuously for 10 minutes before it is turned off by automatic means to protect against overheating.
So, if the PV is 20%, it means that out of 10 minutes the device will work continuously only for 2 minutes. PV is directly related to the length of the weld.
Why do not you jump above your head?
When choosing a device for domestic use, it is very important to prioritize. It is unlikely that a mini welding machine will be able to replace a universal DC transformer. And, in the same way, multifunctional welding machines are not able to replace welding rectifiers.
Also need to pay attention to a few more points. It is advisable to buy a welding machine powered by a single-phase network, that is, from 220 V. In addition, it should be borne in mind that a good household tool consumes less than 5 kW of electricity and is not sensitive to voltage surges.
And yet - do not pay money for the unused functions of the device. Clearly determine for what purposes it is necessary. However, it should also be remembered that a device with a suspiciously low price does not really cost even such money.
