An old transformer welding machine differs quite a lot from a modern inverter device. The second option is more compact, and its use in everyday life is quite simple. The current in the system is always stable, and voltage fluctuations are not observed. All this allows very comfortable welding. Additionally, there is no electromagnetic interference in the network.
DC welding allows you to work even with stainless steel. The process is regulated quite smoothly. At the same time, the metal is not very sprayed during welding. This was largely achieved due to low ripple. Most models of welding inverters are equipped with a reliable protection system. In this case, this avoids short circuits. Additionally, during operation, the electrode will not stick. It depends solely on the stabilization of the arc. The efficiency of welding inverters is 80%. Power consumption for many models is negligible. You can use a regular household network.
How to make a welding inverter?
You can make an inverter welding machine with your own hands . To do this, you need to get a noise filter and a network rectifier. To cool the system using a conventional cooler. Additionally, a current sensor and a step-down transformer are required . The mains rectifier in the welding inverter is responsible for alternating current. Its conversion occurs in a diode manner.
Additionally, capacitors are involved in this process. In this case, alternating current with a high frequency becomes constant. A noise filter in the device monitors power. To do the inverter welding machine with your own hands correctly, the output rectifiers must ultimately stabilize the alternating current. However, they must open and close quickly.
Selection of quality equipment
To choose a good inverter welding machine, you should first look at the power of the device. On average, this indicator is in the region of 8 kW. The welding current parameter should not be lower than 200 A. In turn, a voltage of 220 V is welcome. The diameters of the welding electrodes are different. In this regard, manufacturers produce different models. The minimum diameter of the electrode should be no more than 1.6 mm. In this case, you can count on any delicate welding work that requires accuracy. In all other cases, you can safely use electrodes with a diameter of up to 4 mm.
The compactness of welding inverters also plays an important role. In general, many models look small, but their weight is very different. On average, the dimensions of the welding inverter are as follows: length is 320 mm, width - 210 mm and height - 200 mm. Moreover, the mass of the model should not exceed 7 kg. The magnitude of the welding current usually ranges from 10 to 200 A. Last of all, it is necessary to evaluate the control of the device. The power regulator should be in a convenient location. In this case, the controller must move smoothly. Hot start function is welcome. All this will allow you to get to work very quickly. The cost of devices depends on the manufacturer. The average price for a good inverter welding machine is 9000 rubles.
Welding inverters "Kaiser"
Kaiser welding inverters are notable for their ease of use. In this case, you can always choose an inexpensive model. Their characteristics in most cases are acceptable. Kaiser welding inverters are rarely used by professionals. However, in domestic conditions they are in great demand.
They do not have a hot start function, but they are compact and light in weight. All this allows them to be transported with great comfort. In addition, they are safe and can be operated without risk to health. For this, manufacturers have provided a short circuit protection system. In addition, a comfortable control unit of the device should be noted. Power can be adjusted quite smoothly. At the same time, only the most necessary indicators are located on the front panel. Repair of welding equipment "Kaiser" can be done in service centers.
Kaiser NBC-200 Model
This model is an example of a compact welding inverter. Its length is 330 mm, its height is 210 mm, and its width is only 200 mm. At the same time, the unit weighs 6.5 kg. The voltage of the device is provided for 220 V. All this allows you to connect it to a household network without problems. Its power consumption is small. The maximum power is 8.2 kW. In this case, the welding current indicator is at around 150 A. It can be set at a minimum of only 10 A. The manufacturer provides protection against overheating.
Welding electrodes can be used in a wide variety of diameters. The smallest size that can be installed is 1.6 mm. The maximum electrode diameter for this model is 4 mm. Among the shortcomings can be noted a weak body. In this case, the slightest mechanical damage can lead to serious damage to the equipment. Welding inverters are very afraid of dust. Working with them on a dirty construction site for a long time is undesirable. Are these inverter welding machines (market prices) 9000 rubles.
What is the difference between Kaiser NBC-300?
These inverter welding machines (device diagram is shown below) from the previous model are more powerful. This parameter is as much as 8.8 kW. The maximum welding current can be set to 250 A. The minimum values are 20 A. The voltage at the device is 220 V. The minimum diameter of the electrode used is 1.6 mm, and the maximum diameter is 5 mm.
Overheating protection is provided, and it pleases. This model weighs 4.5 kg. The standard set of the welding inverter includes a mask for protection, hammers and copper cables. They are intended for grounding, as well as holding electrodes. The length of the copper ground cable is 1.5 m. For the holder, it is 0.5 m longer. This welding inverter will cost the buyer about 9,200 rubles.
Interskol welding inverters
Welding inverters of this company are often used precisely by qualified specialists. Almost all models have a forced arc mode. In this case, the combustion process is more stable. Additionally, it is possible to use the hot start function. All this greatly facilitates the work at the beginning of welding.
An automatic reduction in welding current is also available. Due to this, the electrode will never stick to the surface. As a result, the risk of short circuiting is minimized. Additionally, due to this, you can protect the eyes of a person from burns. Surge protection system installed. When the current drops in the network in the device, the stabilization unit is turned on. Additionally, a thermal protection system is always activated. She is responsible for the temperature of absolutely all elements. All this allows you to work continuously for a very long time.
Characteristics "Interskol VDI 160"
Interskol manufactured by the VDI 160 inverter welding machine has a rated voltage of 220 V. The current limit value is 160 A. The maximum parameters reach 215 A. The voltage ranges from 170 to 260 V. The hot start function works independently mode. In this case, the afterburner of the arc can be activated manually. An anti-stick function is provided.
Among the shortcomings, the absence of a voltage reduction unit can be noted. He is responsible, as a rule, for stabilizing the welding inverter at idle. The arc ignition voltage is 120V. At the same time, the idle indicator is only 96 V. The rated power consumption is 4.4 kW. The maximum can be set on the panel 5.9 kW. The efficiency is 92%. A fan is provided for cooling all elements. The dimensions of this model are as follows: length - 302 mm, height - 110 mm and width - 250 mm. Moreover, the mass of equipment is 6 kg. These inverter welding machines cost (market prices) about 8,200 rubles.
Review "Interskol VDI 120"
The rated current consumption of this model is 15 A. The voltage of this welding machine (inverter) is 220 V. The average current rating is 120 A. At the same time, the maximum can be 160 A. When loading at 45%, a load of 120 A. is supported. Voltage limits are from 170 to 260 V. Welding current can be easily adjusted. Its minimum values are 5 A. At the same time, the maximum can be set to 120 A. A hot start function is provided by the manufacturer. There is also an afterburner for work to stabilize the voltage in the system. This model has anti-tidal function.
The voltage reduction unit, as in the previous device, is absent. The arc ignition current is 120 V. In this case, the open circuit voltage is at around 96 V. The power consumption of these inverter welding machines (the device diagram is shown below) has 3.2 kW. The maximum indicator is 4.4 kVA. The efficiency is 92%. A fan for cooling the system is available. The dimensions of this model are very compact. The length of the device is 280 mm, height - 110 mm, width - 250 mm with a mass of 5.4 kg. A welding inverter in the market will cost about 9,300 rubles.
Welding devices of the Rainbow trademark
Welding inverters "Rainbow" are classified as semi-professional. They can work from a portable generator. These devices are used to perform a wide variety of welding jobs. The electrodes are suitable for them in different diameters, which is very welcome. The power of these devices depends on the model. Current adjustment takes place over a wide range. The dimensions of most models are quite modest. At the same time, they weigh a little, and this makes them convenient for transportation over long distances. For this, the manufacturer provides a durable handle. Additionally, there is a belt for transporting the device. Welding inverters work on different surfaces. At the same time, metal spraying will be minimal. As a result, the seams are very neat. Among the shortcomings, one can single out the high cost of these units.
Model "Rainbow MMA 277"
Inverter welding machine "Rainbow MMA 277" rated voltage is 190 V. The electric current in the system is constant. In this case, various fluctuations are minimized. Power consumption is 3.6 kW. The maximum welding current is 277 A. The minimum indicator is in the region of 20 A. The efficiency is 60%. This welding inverter operates on a single phase. There is no fuse system in this model. The insulation class is of the “H” series. Moreover, the protection system is installed "IP21". The weight of this unit is 4.7 kg. In general, these inverter welding machines (device diagram is shown below) can be described as convenient and efficient. They cost on the market an average of 8000 rubles.
What is the difference between "Rainbow MMA 255"?
The MMA series welding machine (invertor) "Rainbow 255" differs in a high voltage of a network. At the same time, power consumption is at the level of 3 kW. The maximum welding current is 255 A. The efficiency is 60%. The phase in this device is one. The weight of this unit is only 3 kg. The hot start function is missing in it. In general, it is quite versatile and suitable for different jobs. The inverter will cost the buyer about 9500 rubles.
Inverters of the Fubag company
The Fubag company has been manufacturing welding inverters for a very long time. Moreover, they have a variety of professional models in stock. They are distinguished by high performance and good performance. At the same time, the control units are installed very high quality. According to indicators, many specialists work comfortably. Most often they are used at various construction sites. In service, welding inverters are quite simple. Periodically it is necessary to clean the dust, however, it is very simple to do. The cooling unit in the devices is installed reliable.
The security system is working properly. Failures in these welding inverters are usually extremely rare. In addition, compact models should be noted. All this makes them very easy to transport. The standard equipment of the device has everything necessary for work. Electrodes can be installed in a variety of diameters. The current stabilization will be pretty good. Repair of welding equipment "Fubag" can be done in service centers.
Features Fubag MMA 300
This Fubag inverter welding machine is classified as professional. At the same time, it can be used successfully in domestic conditions. The mains voltage is 220 V. The current frequency is on average 50 Hz. The rated power consumption of the equipment is 5.7 kW. Moreover, the coefficient of performance is 85%. The minimum welding current is 20 A. The maximum can be set on the panel 300 A. The insulation class is available in the "H" series.
Dimensions of these inverter welding machines (device diagram is shown below) have the following: length - 500 mm, width - 210 mm, height - 335 mm. The minimum electrode diameter is 1.6 mm. The open circuit voltage is at around 65 V. An electronic display is installed in this model. Protection class is provided by IP21. The total weight of the unit is exactly 7 kg. The standard set of the welding inverter has a hammer, goggles, as well as cables for electrodes and grounding. Unfortunately, there is no shipping case in the kit. This model is worth about 12,500 rubles on the market.
Summarizing
Welding inverters are quite different from each other. Some of them are designed exclusively for domestic use, other models are made specifically for skilled workers. For domestic use, it is better to stay on the Rainbow brand. The MMA 277 model, in principle, has decent characteristics and at the same time is cheap. For experts, you can advise welding inverters "Kaiser". The NBC-300 is capable of coping with so many tasks. In general, it is versatile and easy to use.