How to choose a semi-automatic welding machine for home and garage work

Those who live in a private house, or often visit the country, periodically face the need to carry out welding work. This may be due to the construction of new metal structures, repair of existing ones (fence, gazebos in the garden, benches, replacement of planks in the vineyard, etc.). We must also not forget about car owners who carry out body work from time to time. There are 2 ways to cope with such situations: attract expensive specialists, or purchase a semi-automatic welding machine.

Why choose semi-automatic?

Many beginners who are generally familiar with welding may ask a completely expected question: Why are automatic settings not recommended? It would seem that both devices have a similar operating principle and, therefore, the second option would be preferable. Automating the process reduces the risk of errors to a minimum. The absence of human factor influence on production significantly speeds up and allows you to obtain a stable result throughout the entire work cycle. In other words, it is enough to set the parameters for the installation, and it will begin to perform the task. Semi-automatic equipment requires the direct participation of the operator in welding parts.

It is unreasonable to compare both settings without taking into account the situation at hand. The complexity and planned scope of work play a decisive role in making the choice.

For workshops, small companies, service and repair enterprises, private craftsmen, and especially for home use, purchasing a machine is not advisable. The acquisition will result in significant financial expenses. Failure to maintain a continuous work cycle will negatively impact performance. In addition, it may be difficult to set up, since you need to know all the subtleties and nuances of the process. A semi-automatic welding machine can be moved on a special wheelbarrow with a cylinder to the desired location. It is impossible to perform such manipulations with an automatic analogue. If we talk about welding technology, it is identical in both cases.

What else to consider when choosing?

Particular attention should be paid to the functional components - torch and wire. The welding torch is designed to supply gas that forms a protective zone. In this part, the protection of the device from elevated temperatures, melt splashes and physical shocks should be taken into account. Some devices are equipped with a special gun for supplying gas. This solution is convenient due to its wide range of direction options, but one of the hands will be busy, which is also not always acceptable. It is equally important to determine the characteristics of the wire with which the semi-automatic welding machine for body work will work. Which one to choose? Consumables with a solid cross-section are made of aluminum, copper and steel. They are good for minimal melt emissions, combustion stability and relatively high seam quality. Flux-cored wire will be more appropriate for work in special workshop conditions, when it is necessary to carry out repairs on special bases of high-carbon alloys.

About the device

The semi-automatic device is widespread, primarily because of its ease of interaction. Compared to manual welding, the performer does not need to stop to periodically replace a burnt electrode. This greatly improved productivity.

The maximum permissible seam length ranges from 2 to 4 m. It is not affected by the position of the worker in space. This was made possible thanks to the built-in wire feed mechanism, which is implemented by a compact electric motor, started by pressing a button. The unwinder sends it through a metal channel to the welding zone at a constant speed. Together with the motor, the valve for supplying argon, carbon dioxide or a mixture of them into the weld pool moves. The speed can be changed at your discretion. The wire acts as a filler material and a contact for igniting the arc. The performer sets the feed at the mark and maintains a certain distance to the surface.

Technical modification has increased productivity. To work with large diameter pipes, simply place them on rollers and make one continuous weld.

Practical features include the standard nozzle length and distance to the seam. The opposite situation is with electrodes; as they burn out, they become smaller, requiring control over the size of the arc and the filler material. Semi-automatic wire cutting equipment does not have this kind of complexity. You don't need to be highly qualified to work productively. Unified materials are distributed at an affordable price. All this, combined with the need for minimal processing of the finished seam, makes the device one of the most popular on the market. The last factor is explained by the fact that no slag remains on the surface; you can immediately begin painting the product.

Semi-automatic devices are used for:

• creating tacks;
• pulse welding;
• scalding;
• adding carbon steel;
• welding cast iron;
• applying seams to stainless steel;
• working with thin metals;
• processing of galvanized products.

How is it arranged?

Any device, regardless of the scope of application, consists of a number of basic components. Depending on the retail network and the manufacturer’s equipment, the semi-automatic machine may include: unwinding tools, equipment for pipeline welding, hose stands, hoods, protective screens, etc.

The main nodes include:

1. Power supply. Rectifiers and inverters are common. Transformer modifications are practically not used. This is because they are bulky and more suitable for permanent installation. They are characterized by a simple design and a unified layout. The most affordable option. Rectifiers are not without the disadvantages of the group described above. They have limitations on current regulation and difficulties arise with its ripple. Strengths include: a powerful electric arc and almost complete sealing of the seam. Inverters are a modern technology that does not consume much energy. Spot adjustment of shapes and levels of welding currents. The device received automatic inductance adjustment. Widely distributed in garage auto repair shops. Significant disadvantages include the high cost and complexity of repairs. To weld aluminum and magnesium alloy, alternating current with balanced polarity is required. Its formation is possible only with inverters.
2. Welding sleeve (cable hose). Visually, the element resembles a flexible hose with a filler wire feed channel located in the center, surrounded by a tube for shielding gas and coolant (depending on the model). The power cable cores and control system wires are located nearby. Connects the burner to the device itself. The main task is to supply the above listed materials to the shielding gas welding zone. The functionality and efficiency of performing assigned tasks in conditions of difficult access to the place depend on the length. The part is expensive because it must meet high performance characteristics.
3. Burner. A tool on which the quality of performance depends. Tubes and wires passing through the welding sleeve are brought out through it. Main parts: handle and guide tube. The handle received a welding mode switch. The guide tube is equipped with a gas diffuser, nozzle and contact tip. The latter is responsible for the output of the material and must correspond to its diameter. The part can be replaced. The nozzle is also considered a replaceable element. Its choice is influenced by the size of the tip and the welding mode.
4. Wire feed mechanism. The material is distributed in reels of various sizes, coils, with or without copper coating. The mechanism is represented by a reel installation unit with a mechanical unwinding stabilizer and a feed roller. The drive rollers have special grooves, they are identical to the diameter of the wire. The system is driven by an electric motor, controlled by a semi-automatic controller. Pressing and tension are carried out manually. The feeding mechanism is available in 2 versions: 2 rollers (drive and pressure), 4 rollers. The latter is relevant when working with soft and cored wires. Depending on the manufacturer, the reel is placed outside or inside the equipment. In the first case, the equipment will take up less space. The second one is suitable for working with large coils.
5. Control Panel.
6. Cylinder with reducer.
7. Gas valve.
8. Ground cable with clamp.

To work smoothly with metal (cast iron, stainless steel, steel, aluminum), the voltage must undergo certain changes. Initially, you need to get 220 or 380 V, then they are converted to 30 - 90. In this case, the number of amperes increases to 120 - 500. Unlike electrode welding, the technique does not leave slag on the surface of the seam. The joint does not even require mechanical processing.

To carry out the transformation, the mechanical, electrical and gas parts of the semiautomatic device are used. The electric motor supplies the filler material to the torch with a mouthpiece and nozzle. The speed varies depending on the diameter, amperage and required weld thickness. Through the wires, through the mouthpiece, the voltage reaches the wire.

The second contact is connected to the object using a ground cable with a clamp. After pressing the button located on the torch, the wire extends towards the surface to be treated. The electric arc melts the material and the edges of the connection. To form an even seam, the burner is moved from one edge to the other. Sharp and oscillating movements are excluded.

The gas protects the weld pool from contact with the environment. The substance in an inert state is supplied automatically after pressing the button. The tubular shape of the nozzle ensures uniform delivery in the required direction. Otherwise, the gas would disperse randomly, and the resulting seam would be porous and not airtight.

Types of burners

The division is based on how the part interacts with the wire.

1. For pushing mechanisms. The burner is without a drive; the movement of the material is carried out by a mechanism installed in the main block.
2. Driven. The burner handle is equipped with a motor. Its design is identical to the mechanisms on the main unit.
3. Combined (push-pull). The design received both mechanisms described above.

What modes do they work in?

1. Mig. Welding is carried out with argon. Inert gas flows through high-pressure pipes into the burner from a cylinder. The optimal option for welding complex groups of metals.
2. MAG. The process is based on carbon dioxide. He is classified as an active group. They perform a similar task (protects oxygen).
3. MMA, or RDG (mma). Manual arc welding with a fusible conductor. Refers to additional functionality. The hot conductor enters the welding cup. At the same time, the coating melts, forming a top protective layer.
4. TIG. Semi-automatic welding in an argon environment using a conductor. An additional feature for most premium quality models. The constant length of the electrode simplifies the process. The absence of impurities improves the quality of the seam.

Connecting a gas cylinder

It should be noted right away that such repair operations are recommended to be performed in a protective environment. Using a semi-automatic welding machine for body work without gas is allowed only in rare cases when it is necessary to make small connections, adjust joints, etc. In such situations, a wire with a torch that has average performance is used.

In other cases, you cannot do without installing a reducer from a carbon dioxide cylinder. The gearbox itself is connected to the container with a nut of a suitable size. To eliminate the risk of leakage, a gasket should be used in combination with the mounting hardware. Then you can introduce a semi-automatic welding machine for body work into the created infrastructure. With your own hands, it will not be difficult to connect the gearbox and the device using a special gas supply hose. The connection is most often made through a fitting, which should additionally be secured with clamps.

What are they?

1. Household. A simple device with a minimum number of settings. The limited power is enough for use in the country house or garage. Requires alternating voltage with a value of 220 Volts. The best option for use is within 2 - 3 hours. As the duration increases, the device heats up. It takes time to cool down. The permissible cross-section of the metal is in the range of 3 - 5 mm. Compatible with thin wire. The material cassette received 2 rollers. Household equipment is suitable for carrying out minor body repairs, welding a fuel or water tank, and self-manufacturing gates, frames and other types of small metal structures. The device is unpretentious in maintenance. Weaknesses include low maximum current strength.
2. Semi-professional. Mid-level equipment. Available power has increased. Despite the simple interface, the number of permissible settings has increased. The maximum penetration thickness is 10 mm. Depending on the configuration, the feeding device can have 1 or 2 rollers. Wire diameter ranges from 0.8 - 1.6 mm. In demand in private auto repair shops, service stations and small industries. They are used to lay pipelines, repair thick-walled parts and larger metal structures. Operation is allowed for 6 hours a day. Disadvantages include increased cost compared to household ones and problems with maintaining current up to 20 A.
3. Professional. Massive heavy equipment installed permanently or on a trolley. In the latter case, a mount for a gas cylinder is provided. This makes transportation easier. The universal wire feeder and cable duct is compatible with a variety of material diameters. Semi-automatic devices are actively used in production. It is possible to process metals with a thickness of 20 mm and more. The device is not afraid of moisture and dust. You can work with it outdoors. The cable length depends on the model. The equipment will require a connection to a 380 V network. It is advisable to purchase it in places with permanent employment. In addition, difficulties with transportation and repair may arise. The cost of replacing components will result in serious financial losses.

Popular manufacturers

There are several manufacturers in the top of the best welding machines that receive a large number of positive reviews:

1. Aurora PRO is a universal semi-automatic welding machine manufactured in Russia by Chinese manufacturers Riland Power Source Technology, easily adjustable, and can be used at low and high currents.
2. Svarog is a semi-automatic household welding machine from a Chinese company that is resistant to voltage surges. Latvian Resanta produces SAI-220 inverters, the only negative is the low degree of protection.
3. Eurolux is a German manufacturer. For garages and cottages, Eurolux IWM-160 and Eurolux IWM-190 are most often purchased.
4. FUBAG is a German company that specializes in the production of devices for automobile concerns. For body work, choose Fubag IR 160, Fubag IR 200.
5. Interskol - the company has the widest network of service centers; the ISA-200 model remains the sales leader. The inverter is equipped with additional functions.

How to choose?

1. Input current. Power can be supplied from a network of 220 V, 380 V, or a combination. For a summer residence, 220 V is enough. Enterprises are equipped with a three-phase network with a voltage of 380 V. This significantly increases productivity and will allow you to turn on several devices. Combined people reveal themselves well only in cases where they often have to carry out assignments on the road. In such situations, it is not always possible to find out in advance how things are going with the connection. Models with a reduced input voltage are relevant, since the indicators may drop below 220 V.
2. Power. Indicators determine the capabilities of the device. The value ranges from 3 to 14 kW. For a home, 5 kW is enough. The characteristics are sufficient for repairing the body, tank, welding metal gates and doors (thickness 1.2 - 1.5 mm). For flanges and thick iron sheets - minimum 7 kW.
3. Level of protection. Determines protection from moisture. There are IP21, 22, 23. The last group is less vulnerable. It can even withstand welding in pouring rain. The rest are only suitable for indoor use. For home use, IP21 is sufficient. They withstand accidental moisture on the body.
4. Maximum and minimum welding current. They affect the quality of the seam and the ability to interact with thin metals. Welding of metal structures up to 1.5 mm is performed by automatic machines with ratings of 20 - 120 A. Domestic needs are completely covered by equipment with an upper rating of 180 A.
5. Current adjustment. The characteristic directly depends on the wire feed speed. In budget models it is represented by a circular toggle switch in 10A increments. The power of such devices is great. Fine tuning is possible at low and medium currents. Adjustable to 1A.
6. Idling. At what voltage will the semi-automatic machine be connected to the network and started, but the welding arc will not burn. The higher the characteristic, the better. For one-time and infrequent use 30 - 40 V. Service centers and workshops not lower than 50 - 60 V.
7. Burner cooling. There are 2 types available: air and liquid. In the first case, the case is equipped with a fan. In combination with natural evaporation, it allows the use of semi-automatic devices by 35 - 60%. Water cooling extends operating time. Outside of production, indoors, the first type is sufficient.
8. About inductance. Reduced metal spattering and increased penetrating properties into the root of the seam. To do this, increase the time of separation of the drop and its movement to the treatment site. Manipulations will require the use of a mixture of argon and carbon dioxide. The function is completely useless for home use.
9. Automatic shutdown. Protection of equipment and workers from emergency situations. In its absence, a separate installation of an external machine and organization of connection to the electrical network is necessary. This is not critical for stationary use.

Functional features for garage work

When buying a welding machine in a garage, it is recommended to pay attention to equipment that has the necessary functionality to perform specific tasks.

In particular, for the conditions under consideration, models are suitable that allow welding metal without gas, and in conditions where the input voltage regularly changes.

Possibility of welding without gas

Some modern semi-automatic machines are produced with a resistance welding mode, which allows you to carry out work without gas supply. Such models are complemented by a special valve that prevents the escape of argon. Equipment of this type is convenient when working at heights, when there is a need to lift a semi-automatic machine.

Operation at reduced input voltage

In garages, the network often experiences a sharp drop in voltage. For such conditions, you will need universal welding equipment that continues to work when this indicator drops to 140 Volts. Such models ensure stable arcing when the voltage drops, resulting in a high-quality seam.

Burner cooling

Welding equipment is usually equipped with a naturally cooled torch. But some models provide a hose in which, in addition to the laid cable, there is circulating ethyl alcohol with disciplined water. The liquid removes some of the generated heat.

Models with such cooling are complemented by a water supply pump and operate longer than other semi-automatic machines.

Pulsed welding capabilities

Semi-automatic pulse welding is the most optimal solution for people who have not previously worked with such equipment. This type of device provides:

• high accuracy of tracking the moment when the metal begins to melt;
• no short circuit after switching on (reduces splashes);
• high-quality seam, regardless of the type of consumables used.

Pulse inverters are suitable for working with aluminum, which welding machines of other modifications cannot cope with.

The best budget semi-automatic welding machines

PIT PMIG145-C, MMA, MIG/MAG

The model is designed for cooking in protective gases. Due to its high resistance to intense and prolonged loads, it is suitable for long-term daily use. This will be appreciated by home craftsmen who do all sorts of repairs in their free time. The black body is equipped with a wide handle for comfortable movement.

PIT PMIG145-C, MMA, MIG/MAG

Advantages:

• automatic shutdown in case of overload and short circuit;
• ease of configuration installation;
• universal purpose;
• compatible with all types of wire.

Flaws:

• short wire length;
• unreadable value scale.

Edon Smart MIG-180, MMA, MIG/MAG

A household inverter device will become an indispensable assistant for the home craftsman. It is designed to work in inert gas environments, with flux-cored wire in MIG mode and with a stick electrode (MMA). A beginner can easily navigate the lightweight smart menu. Many factory presets will make it easier to select the optimal parameters for welding almost any metal.

Edon Smart MIG-180, MMA, MIG/MAG

Advantages:

• idle 57 V;
• protection against overheating and short circuit is provided;
• uninterrupted operation from 195 to 245 V;
• electronic elements are coated with several layers of varnish;
• maximum weight of wire reel 1 kg;
• The filler material supply mechanism is protected from dust;
• IP21S/F;
• compact dimensions;
• rich equipment.

Flaws:

• short ground wire;
• the welding sleeve is not removable;
• The hoses with the burner are short.

Svarog REAL SMART ARC 220 (Z28403), TIG, MMA

The model from a domestic company will be appreciated by beginners and professionals. It stands out among its competitors with its unique Synergy MMA mode. Now any welder will work in optimal settings, which are selected automatically depending on the preset parameters. It is enough to select the diameter of the electrode. The current strength, as well as Hot Start and Arc Force are adjusted to the initial parameters. This increases productivity and accessibility for young craftsmen.

Svarog REAL SMART ARC 220 (Z28403), TIG, MMA

Advantages:

• high-quality assembly;
• high power;
• works with reduced voltage;
• intuitive controls;
• long power cord;
• not easily soiled.

Flaws:

• the network cable becomes dull in the cold;
• noisy fan;
• The ground cable is heating up.

Svarog REAL MIG 200 (N24002)

If your task is to purchase one of the best inverter-type semi-automatic welding machines, pay attention to this model from a Russian manufacturer.
Firstly, the powerful and durable machine is capable of welding in two different modes - semi-automatic and manual arc welding. Secondly, it attracts the working resource of the welding inverter. Thirdly, technical and operational data will allow you to cope with both everyday tasks and professional loads. Using the equipment will not cause any difficulties; the convenient control panel has a wire feed regulator and a regulator for fine-tuning the current strength. High-quality assembly and a competent combination of technical characteristics make it possible to produce smooth and neat seams. Owners of the device note decent quality of operation at low voltage (160 - 180 V), a good ventilation system that protects the device from overheating. Advantages:

• wide range of work performed due to two modes
• smooth and high-quality seams when welding with or without gas
• polarity change
• welding wire feeder
• good efficiency - 85%
• Excellent value for money and quality
• warranty period 5 years

Flaws:

• the basic package does not include a holder
• relatively heavy weight

The best semi-automatic welding machines in the mid-price category

STAVR SAU-200M, MMA, MIG/MAG

The device is developed based on modern advanced IGBT inverter technology. It is based on the use of biopolar transistors with high power insulated gates. The solution ensures an uninterrupted arc and a high quality weld. The duty cycle at maximum current is 60%. In other words, it can be used for a long time without interruption. Stable operation with a reduced voltage of 150 V will appeal to everyone who plans to use the device on the road in remote settlements and cottages. Since it is not always possible to ensure stable performance.

STAVR SAU-200M, MMA, MIG/MAG

Advantages:

• strengthening the arc current to avoid flooding;
• automatic reduction of welding current when sticking;
• unpretentious in maintenance;
• rapid ignition of the arc.

Flaws:

• voltage is not regulated;
• short ground cable.

Aurora Dynamics 2000, MMA, MIG/MAG

The semiautomatic device operates in an environment of inert and active protective gas. When developing new equipment, the shortcomings of the previous generation were taken into account. After a long process of testing electronic components and checking the quality of seams, European certificates EN60974-1 were obtained. Engineers have achieved stable operation at low and high currents. What makes the device stand out is its inductance adjustment. This feature makes it easier to process thin metals, vertical welding, and similar tasks.

Aurora Dynamics 2000, MMA, MIG/MAG

Advantages:

• simple and reliable equipment;
• network and overheat indicator;
• automatic shutdown when temperatures rise;
• good equipment.

Flaws:

• there is no button for scrolling the filler material after connecting the hose;
• does not display material feed rate in MIG.

RESANTA SAIPA-190MF, TIG, MMA, MIG/MAG

The domestic company has been firmly established in the market for several decades and was able to win the trust of its performers. According to many experts, semi-automatic machines are considered one of the most reliable and practical on the market in their price segment. To carry out welding work with non-ferrous and ferrous metals, there is no need to further strengthen the equipment.

RESANTA SAIPA-190MF, TIG, MMA, MIG/MAG

Advantages:

• removable burner;
• protection against overheating and short circuit;
• adjusting the supply of filler material and current;
• nice design;
• user-friendly interface;
• soft welding;
• high build quality.

Flaws:

• overheats quickly;
• protection class IP 21;
• no alternating current.

Characteristics for equipment selection

Initially, you should rely on power and current indicators. They will show what the equipment's performance, endurance and reliability will be. As for the power potential, it varies from 2.5 to 7.5 kW on average. Moreover, the main range is in the sector up to 4-5 kW. Perhaps in professional environments they use 7.5 kW models, but for domestic repairs you can limit yourself to a 3 kW device. Another question is how to choose the right semi-automatic welding machine for body work based on current strength? In this case, the performance indicator should be compared with specific tasks. The current varies from 55 to 160 A. Models up to 100 A are suitable for welding body sections up to 3 mm thick. But if you plan to make complex butt joints with a thickness of about 8-10 mm, then the minimum indicator for this characteristic should be 140 A. The possibility of welding materials with different dimensional parameters is also affected by the diameter of the wire. It varies from 0.6 to 1 mm on average, and as the thickness increases, the possibilities for welding massive structural elements expand.

The best premium semi-automatic welding machines

Aurora SPEEDWAY 200 Synergic, TIG, MMA, MIG/MAG

Spiritual successor to the AuroraPRO line. The developers have relied on the versatility of the device; it supports almost all modes with any possible material. Synergy will make it easier to use for beginners who are not familiar with all the intricacies of the process. Among the key features of the semi-automatic device, the ROOT mode should be noted. It reduces the number, energy and quantity of splashes generated. Indicators reach 30-50%. For this purpose, carbon dioxide is used as a protective gas.

Aurora SPEEDWAY 200 Synergic, TIG, MMA, MIG/MAG

Advantages:

• convenient setup;
• small dimensions;
• Possibility of working on location;
• stable operation with reduced voltage (160V);
• digital display;
• functional design.

Flaws:

• everything necessary for TIG welding is purchased separately;
• difficulties are possible when processing thin sheets of metal;
• insufficient length of carbon dioxide hose.

Svarog REAL MIG 200 (N24002N), MMA, MIG/MAG

The inverter is suitable for welding carbon steel, aluminum, stainless steel, titanium, bronze, brass and their alloys. Even beginners can interact with the classic panel. For comfortable operation, a voltage of 160V is sufficient. The wide, comfortable handle makes transportation easy.

Svarog REAL MIG 200 (N24002N), MMA, MIG/MAG

Advantages:

• inductance adjustment;
• presentable appearance;
• withstands power surges;
• versatility;
• rubber bumpers on the corners;
• economical consumption.

Flaws:

• no instructions;
• short cord;
• plastic cover makes it difficult to see the buttons;
• no current indicator.

Aurora OVERMAN 160

The inexpensive inverter semi-automatic Aurora will not let you down in the winter cold.
According to customer reviews, a device for 20,000 rubles will cope with its task even at -20°C; the manufacturer provides start-up blocking at a temperature of -25°C. The rating model is suitable for domestic use or use in professional activities, for example, for body work. The inverter semi-automatic machine is suitable for welding aluminum, demonstrates high quality welds even in inexperienced hands, and operates stably from the mains or from an electric generator. Surely this is the best of the inexpensive semi-automatic welding machines that combines decent technical parameters and high-quality workmanship. Advantages:

• there is a wire feed button
• EURO type connectors
• inductance adjustment
• minimized splashing
• arc stability even at reduced voltage

Flaws:

• no pre- and post-gas adjustment

Duration of activation

Before purchasing a semi-automatic welding machine, you need to understand the concept of on-time (ON). The thing is that during operation the welding machine gets very hot and the welding process is divided into periods of work and rest. The continuous operation time of the welding machine with maximum operating current is expressed as a percentage of 10 minutes. That is, if the duty cycle of the welding machine is 50%, this means that the machine can operate for 5 minutes (at maximum load), after which it needs 5 minutes to cool down. It should be borne in mind that the duty cycle is indicated for full load operation.

When repairing a car, the welding process consists of short procedures and most often not at the full power of the welding machine. Therefore, for use in a garage, an PV of 40% will be sufficient.

Reviews about semi-automatic body welding

Of course, before choosing a specific model, it would be useful to make sure that this repair technology is, in principle, suitable for correcting defects in the car body. Masters who use this approach note the high quality of the result. It is almost impossible to achieve such a reliable, tight and outwardly neat joint using improvised means. But the downside of such repairs will be the difficulty of using a semi-automatic welding machine for body work. Reviews emphasize that monitoring the technique of performing the operation, constantly managing the characteristics of the protective environment and maintaining the optimal duration of the session require special skills from the performer.

Regulatory measures

The first step is to regulate the voltage. Its adjustment is carried out using a plastic nut installed on the coil of the device. Then you can move on to adjusting the force of the roller that presses the wire against the feeder. In this part, the main thing is that the consumable passes into the channel of the supply hose even if there are deflections. At the final stage, you should adjust the semi-automatic welding machine for body work according to the volume of gas supply. The flow rate is regulated by a valve installed on the cylinder. Its optimal position is to turn it 1-2 turns.