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Welders are equipment for joining metal parts by welding. When choosing a suitable model, one should proceed from the purpose (nature of work and type of metals).[su_expand height=”50″ link_color=”#e11312″]

The device distinguishes 4 types of welding machines:
Transformers are inexpensive and simple in design, but heavy and bulky devices. Welding is performed on alternating current. Due to this, only ferrous metals (cast iron, steel) can be welded.
Rectifiers – a transformer is also based, but welding is carried out with direct current. Due to this, the strength and quality of the connection is higher, and the consumption of materials is less. They are usually used in industry.
Inverters are compact and lightweight (from 3 kg) devices. The most convenient to use and recommended for novice welders. Differ in a stable arch, can be used for welding non-ferrous metals, thin sheet metal.
Semiautomatic devices – productive devices, optimal for continuous operation. Able to work with all types of metals. Widely used in car repair enterprises.
The main parameters of welding equipment include:
input voltage (220/380 V);
maximum welding current;
PV (duration of inclusion) – the higher this coefficient, the more productive the apparatus;
maximum diameter of an electrode (a wire at semiautomatic devices).