The method by which metal parts are differentkind of products are connected by a seam, has been known for over 100 years. Welding machines evolved quite quickly, but the principle of their work remained unchanged. When used, the connection is made using electrodes and alternating current. The newest version of the similar equipment is the welding machine inverter. Which is better to buy a tool of this type? We will discuss this later in the article.
What is a device-inverter
От старых сварочных трансформаторов и Rectifiers such equipment is characterized primarily by an improved power supply circuit. The process of ignition of the electric arc in inverters is implemented easier than in older models. Due to this, such devices are distinguished by the maximum stable operation.
How does it work
Easy to use is what it used to beall distinguishes any welding machine-inverter. Which unit is better suited in this or that case - let's talk about this a bit later. To begin with, we will deal with the way in which such equipment functions.
The principle of operation of welding inverters is prettyis simple. The voltage applied to the device is pre-rectified. It is then converted back to a variable with a simultaneous increase in frequency. At the next stage, this parameter decreases. Further, the high-frequency voltage is rectified again. This technological solution allowed us to make the welding machine-inverter as compact as possible and suitable for use at home.
Varieties
Inverters are classified mainly on the basis of differences in the characteristics of the operating current. Today on sale are available:
household appliances;
professional;
industrial.
Household inverters differ in the small sizesand not too high cost, but are not intended for continuous load. That is why they are mainly used only at home or in the garage. Their welding current index varies between 120-200 A. Many consider the optimal variant of household equipment to be 160 A.
Professional models are capable of delivering current from200 to 300 A. Such inverters are usually used by employees of small and medium-sized companies of the corresponding specialization. This kind of equipment is allowed to apply including for long-term loads. Using such an apparatus, for example, it is possible to weld communication pipes or to perform installation work. In industrial devices, the current indicator varies in the range of 250-500 A. Such units can already be not only single-phase, but also three-phase.
What to look for when buying
What should be considered when choosing a welding machine-inverter? What is the best way to purchase a unit? The answer to this question may depend on factors such as:
power output current;
instrument phase;
wire feed method;
range of electrode diameter;
brand of equipment.
In order to choose the right varietyapparatus, you need to first determine the tasks that will later be solved with its help. Conventional household inverters are designed for no more than 10-30 minutes of welding. After that you need to take a break. If this performance is not enough, it is worth, of course, to purchase a more powerful professional welding machine-inverter. The price of such models, of course, higher than the domestic. However, they can also be used to perform much more complex welding work.
In addition, when choosing an inverter istake into account the stability of the network in the house. The worse the voltage quality, the higher the welding current required. Owners of houses built in areas where power transmission lines do not provide a stable voltage of 220 V should consider buying a device that delivers a current of at least 200 A.
Household models of welding machines-invertersUsually used to work with metal with a thickness of no more than 4 mm. In this case, use electrodes with a diameter of about 2.5 mm. If you need to work with a thicker material, you should not buy a household, but a professional inverter. On such models, you can use electrodes of larger diameter.
Top Marks
The brand of the manufacturer is, of course, alsowhich you should definitely pay attention to when choosing a welding machine-inverter. Which option of the equipment for this feature is best suited in this or that case is a relatively difficult question. Almost all brands of inverters currently on the market are of very good quality. And the good reviews deserved both imported and domestic equipment of this type. But, of course, there are on the modern market including the brand of devices that are particularly popular. These include, for example, models of foreign production Fubag, as well as domestic inverters "Svarog" and "Resanta".
Fubag units: specifications and reviews
Professional devices of this manufacturercan be used to perform welding work of any complexity. The most popular model of the company Fubag is the IR 200. This inverter has a high current (200 A) and a wide range of operating voltages (from 150 V). In addition, it has features such as anti-sticking, hot start and afterburner.
Ease of use is whatfirst of all earned good this welding machine-inverter reviews. Even a beginner can do the job of joining metal parts with its use. Some complaints from consumers, this model has earned only for a low PV coefficient (40%). When operating at maximum current using this inverter, breaks (for 6 minutes) should be done every 4 minutes.
"Svarog": reviews and specifications
The devices of this brand are praised primarily forstability of operating mode, reliability and noiselessness. They also earned good customer reviews for their high efficiency and low quality of voltage. The two most popular models of this manufacturer are the ARC 250 and EASY MIG 160. You can find out what technical characteristics the Svarog welding machine-inverter ARC 250 and the EASY MIG 160 model of this manufacturer can be found in the table below.
Characteristics / Apparatus | ARC 250 | EASY MIG 160 |
Weight, kg) | 19 | 12.5 |
Dimensions (cm) | 480x210x350 | 485x185x370 |
Idling voltage (V) | 67 | 53 |
Required voltage (V) | 220 | 220 |
Rated current (A) | 225 | 190 |
Power Consumption (kVA) | 9.4 | 7.1 |
Mode of operation (PV) | 60% | 60% |
As you can see, "Svarog ARC 250" - veryconvenient in use and at the same time the productive welding machine inverter. 220V - this voltage is required for his work. And consequently, it is very convenient to use it in the country or, for example, in the garage. The same goes for the EASY MIG model. This device is also quite convenient in operation and productive. However, it has slightly less power than the ARC 250 and is cheaper.
Models "Resanta"
Inverters of this brand are valued by consumers beforejust for good performance at not too high cost. The most popular model of this manufacturer is the welding machine "Resanta Sai-220". Specifications he has are:
rated current - 10-220 A;
weight - 4.9 kg;
required voltage - 220 V;
no-load voltage - 80 V.
The maximum diameter of the electrodes for this model is 5 mm.
How to choose a welding machine-inverter? Issue price
It is worth a little modern equipmentmore expensive outdated transformer models. But also to make welding work with its use is much more convenient. The price of the popular Svarog model ARC 250, for example, is 30-45 thousand rubles. EASY MIG 160 devices cost about 30-35 thousand rubles. For the model Fubag IR 200, as for the less productive, suppliers usually ask about 10-12 thousand rubles. However, if you wish, you can pick up such equipment and for 9-9.5 thousand rubles. Welders "Resanta Sai-220" are 8-11 thousand rubles, depending on the region of delivery.
