Which plasma cutter is better to choose?

Which plasma cutter should you choose? Review of popular models

For cutting metal at enterprises, as well as in various workshops, the classic method using an acetylene cutter is increasingly used.

An air plasma cutting machine can completely replace outdated metal processing equipment. Such a device has not only more compact dimensions, but also a higher flame temperature, which makes it possible to cut refractory metals.

How to choose such a device for an organization or for personal use will be described in detail in this article.

Operating principle of a plasma cutting machine

The plasma cutting machine uses ionized gas, which can be heated to a temperature of 30,000 degrees. Due to the high temperature of the plasma, it is possible to quite easily cut metals up to 50 mm thick. The following are used as gases that can be ionized:

• Air.
• Nitrogen.
• Water vapor
• Argon.
• Carbon dioxide.

Using air is a “free” way to provide the plasma torch with the necessary gas, but this cutting option will require the purchase of a compressor.

The operating principle of a metal plasma cutting machine is as follows:

1. A high frequency current is supplied to the plasmatron, which forms a primary electron arc with a temperature of about 6,000 degrees.
2. Compressed gas is supplied to the burner, which passes through an electric arc at high speed.
3. The gas is ionized and reaches a temperature of 20,000 - 30,000 degrees.

It is this jet of ionized gas that cuts the metal.

Types of plasma cutting devices

A device for air plasma cutting of metal can have different dimensions and purposes. To perform precise cutting of metals, computer-controlled machines are used.

The price of such an installation can be hundreds of thousands of rubles, so purchasing for private use is impractical.

A unit for household use can be purchased at an affordable price, but the thickness of the workpiece processed for such devices usually does not exceed 12 mm. The main advantage of household models is their mobility. Household plasma cutting machines can be used by repair teams to carry out work directly at the accident site.

In addition to dimensions and power, plasma cutting machines can be divided according to the type of electrical energy transformation .

Inverter models are usually used in everyday life, due to the relatively low power of such devices. The undoubted advantage of this type of plasma cutter is its higher efficiency, which in modern devices can reach a value 30% greater than that of transformer models.

Transformer plasma cutters have significantly greater weight and electric arc power, but due to high energy consumption they are used mainly only in production. Among the main positive qualities of the transformer model is high reliability. Such devices tolerate power surges well, while inverter devices can completely fail if the power supply is unstable.

Most popular models

Among the plasma cutting machines, there are several models that have proven themselves in operation.

1. Multiplaz-15000 - operates exclusively from a three-phase electrical network.

The unit is not only designed for cutting, but also for soldering any conductive metals.

Multiplaz-15000 allows you to perform high-quality metal cuts thanks to a narrowly directed plasma jet. Thanks to the original design using water vapor as a plasma-forming substance, working with a plasma cutting machine becomes not only highly productive, but also absolutely safe for the environment.

Using this device, you can easily process metals up to 50 mm thick. The cost of the car is 170,000 rubles.

2. Cedar CUT 160I is a high-performance device (costing RUB 157,000). Operates from a three-phase voltage network of 380 V.

To operate the device, you need a compressor that will supply compressed air to the burner. The device can be connected to a portal with software controls to perform work more accurately and increase the speed of metal cutting. At a high cutting speed, Cedar cut 160i allows you to make a perfectly even cut, which does not require additional processing for further welding of metal parts.

This device implements a non-contact initial arc igniter system, which also simplifies and speeds up the work process. The thickness of the processed metal recommended by the manufacturer is 40 mm.

3. RSA-120 IGBT - ideal for cutting not only steel, but also non-ferrous metals. Using an innovative method of switching electric current allows you to increase the efficiency of the device, as well as significantly reduce the likelihood of failure due to changes in mains voltage.

RSA-120 IGBT is a professional device that allows you to operate under heavy load for a long time. The design of the device has built-in protection against overheating, as well as against phase loss and insufficient pressure of air supplied to the burner.

RSA-120 can only be connected to a three-phase network with a voltage of 380 volts. The average price of a plasma cutter is 140,000 rubles.

4. SVAROG REAL CUT 45 is a household plasma cutter that can be connected to a regular 220 V power supply. The device is capable of cutting any conductive metal with a thickness of no more than 12 mm. Despite the low cost (RUB 19,000) and low power, reviews of this device are extremely positive.

SVAROG REAL CUT 45 belongs to the class of inverter devices, so maximum performance will be ensured during operation. The current power consumed by the device is only 6.2 kW, so there will be no disruptions in the home network when using the device.

This model is equipped with a smooth current regulator, which allows you to ideally configure the device for cutting metals of various thicknesses.

5. Resanta IPR-40K is a domestically produced plasma cutter for household use, characterized by high quality and reliability. Price 20,000 rub.

The device is lightweight, making it ideal for home use. To operate the plasma cutter, you just need to connect the device to a regular 220 V outlet, after which you can cut any metal up to 12 mm thick.

6. MASTER CUT-40 is a compact, lightweight and easy-to-use device for plasma cutting of metals.

The device is connected to a 220 V home electrical network. MASTER CUT-40 is perfect for home use by both beginners and experienced craftsmen.

The weight of the device is only 8 kg, so MASTER CUT-40 can be used with maximum efficiency in small construction teams. The cost of the inverter is 23,000 rubles.

The listed device models differ significantly from each other only in power, the remaining characteristics are at a fairly high level, so the choice of device should first of all take into account the possibility of connecting to the appropriate electrical network, as well as the thickness of the metal being processed.

Tips and tricks

1. When choosing a device for plasma cutting, preference should be given to devices that have a Euro connector for connecting a plasma torch. The presence of such a connector guarantees easy connection of cable-hose packages of various lengths, and also, if extension is necessary, a problem-free connection of such elements with each other.

2. To perform a high-quality cut, as well as to extend the service life of the device, it is recommended to use only high-quality consumables. Most often, when performing such work, the nozzle and cathode wear out, so you should especially carefully monitor the condition of these parts.

3. When working with a plasma cutting machine, you must strictly follow safety rules. Along with the plasma cutter, you should definitely purchase a protective shield, glasses and special clothing. To protect against splashes of hot metal, you must also use gloves and special shoes.

4. If, when using a household appliance, you have to work at the maximum possible power, then you need to take breaks from working. The duration of non-stop operation must be indicated in the equipment instructions.

Source: https://plavitmetall.ru/oborudovanie/apparat-vozdushno-plazmennoj-rezki.html

Plasma cutter: pros and cons, varieties, selection criteria with video

A plasma cutter is not the most important tool in the household, but in construction you cannot do without such a device. It allows you to cut metal quickly and accurately. To learn how to use such a device, you need to understand the operating principle and main characteristics, and also watch the corresponding video.

Operating principle of a plasma cutter

First of all, it is necessary to understand that plasma is air heated by an electric arc to a temperature of 30,000°C . In this case, the air has an ionized state, which means it ceases to be a dielectric. Due to the conduction of current, the metal melts and is blown out of the cut area.

Any plasma cutter is equipped with a plasma torch. We are talking about a plasma cutter connected by a cable and hose to the main apparatus. All plasmatrons can have a direct or indirect effect. In the first case, the workpiece is included in the electrical circuit. If you plan to process non-metallic parts, then an indirect-action product is suitable.

The capabilities of a plasma torch depend directly on the nozzle . Products with a large diameter can allow a significant amount of air to pass through, which means the cutting speed will be significant.

Most often, nozzles with a diameter of up to 3 mm are used in plasma cutting. The length of the element is 9–12 mm. If you use a really long device, the quality of the cut will be very high, but the nozzle itself can wear out quickly.

An indicator that exceeds the diameter by 1.5 times is considered optimal.

Inside the plasmatron there is a metal rod made of hafnium. This element acts as an electrode.

The plasma cutting process often uses exclusively air, which is both a protective and plasma-forming gas. In this case, slight oxidation of the surface is possible. To avoid this consequence, some industrial units may additionally use oxygen, helium, hydrogen and other gases .

Advantages and disadvantages of a plasma cutter

Plasma cutters are often used when performing various construction works, as can be seen from numerous videos. Such equipment has many advantages .

• A variety of metals can be processed, including steel, stainless steel, cast iron, aluminum and various alloys.
• The workpiece itself does not need to be pre-prepared, that is, you can safely cut a surface with paint or rust residues.
• Thanks to the plasma cutter, the cut is smooth and very precise. At the same time, there is no scale or sagging.
• Due to the features of the device, thermal deformation will be minimal, and this applies even to those cases where the metal sheet is small in thickness.
• Using a plasma cutter is safe, because gas cylinders are not needed during operation.
• If desired, you can make curly cuts.

Naturally, there is no ideal equipment for cutting metals. So, plasma cutters also have their disadvantages .

• First of all, it is worth noting the limitations on the thickness of the metal. The most advanced industrial devices can cut metal up to a maximum thickness of 100 mm.
• The workpiece must be positioned strictly perpendicularly. The permissible deviation is 50°. In some models it is only 10°.
• You cannot perform plasma cutting with two torches connected to the machine at once.

If you carefully study the features of a plasma cutter, you will understand that such equipment has more advantages. When you watch many videos, you will be convinced that the unit is suitable for processing metals when creating fences, brackets, ventilation systems, etc.

Types of plasma cutters

All plasma cutters are divided into 2 groups: transformer and inverter . In the first case, it will be possible to cut metal up to 40 mm thick, and in the second – up to 30 mm. At the same time, the inverter version consumes less electricity and has greater efficiency. Such a device is quite compact, which means it will be more convenient to cut in hard-to-reach places.

Contact and non-contact models are available on sale. Plasma cutters are also divided into household and industrial, which affects the requirements for the power grid.

How to choose a plasma cutter?

If you are looking to purchase this type of equipment, be sure to consider a few important factors .

• Each equipment has a specific marking. Thus, some devices are designed only for cutting metals, while others allow argon arc or arc welding. Naturally, there are also universal models. However, experts in their videos claim that such equipment has insufficient efficiency.
• You always need to take into account the current strength, as well as the maximum permissible metal thickness. Accordingly, you should know for what needs you will need a plasma cutter.
• Duration of activation is another important factor, which is measured as a percentage. An indicator of up to 50% is enough for periodic cutting of various metal structures. If you plan to use the device regularly, then it is better to choose a model with an on-time of up to 100%.
• Such equipment may have a built-in or external compressor. The first variety is characterized by low power. Accordingly, such a device is suitable for use at home. If you plan to use the plasma cutter regularly, then it is better to give preference to an external compressor.
• Using such a unit should be convenient, so when purchasing, you need to pay attention to the length of the cable and hose. It is important to remember that such a 20 m long package may be inconvenient, because it will have to be untwisted, even if the metal is being cut next to the device.

A plasma cutter is an indispensable equipment for cutting metals. When using it, you must adhere to safety precautions . Consumables should also be replaced periodically. Before you start cutting metal structures, you need to watch the relevant videos and consult with a specialist.

Source: https://stanok.guru/metalloobrabotka/rezka-metalla/preimuschestva-i-rekomendacii-po-vyboru-plazmoreza.html

How to choose the right plasma cutting machine? — plasma cut

Today, plasma cutting is one of the leaders among all metal cutting methods. The technology confidently outperforms all its closest competitors due to its excellent accuracy and speed, as well as the ability to process metals up to 150 mm.

The modern market offers a wide variety of different plasma cutting machines, differing in operating parameters, CNC functionality, plasma torch design and, of course, price. We will try to figure out how to choose the necessary plasma machine and where to purchase it.

Types of machines

So, plasma cutting machines can be divided into several categories:

Manual options are mobile, low-power equipment, ideally adapted for small-scale production. It is chosen by craftsmen of various levels, as well as small workshops with a limited budget. The price for such a plasma cutting machine is one of the most inexpensive, but in practice it can show quite decent results in terms of accuracy and good efficiency.

Gantry plasma cutting machines are the largest devices. They are equipped with a large work table, where the metal intended for processing is placed. The installation has a rack and pinion drive that moves the iron sheet and plasma torch to achieve maximum accuracy and good speed. Suitable for large production facilities, metal rolling shops, as well as enterprises engaged in serial production of metal products.

Portable (compact) models are purchased by many manufacturing enterprises, since they, like portal ones, have good performance. They are a longitudinal frame with slats along which a carriage with a plasma torch moves. Using CNC, the process is automated as much as possible, simplifying work with complex equipment. The design is quick-disassembling, which allows you to move them from place to place.

Which plasma cutting machine to choose can only be determined by a thorough study of the market, elaboration of the type of activity of the enterprise, and analysis of the required capacities. The budget plays a role, as does the likelihood of expanding production. Most likely, the choice will be between portal machines for gas and plasma cutting and portable options. But the deciding factor for many is the price of the equipment.

Cost of metal cutting machines

It is possible to buy a CNC plasma cutting machine for metal at a price of 100 thousand rubles. There are many such offers on the Internet, but usually these are used or homemade assemblies of low power.

The cost of a machine suitable for a medium-sized metal processing enterprise will be slightly higher:

From 300 to 800 thousand rubles - a stationary installation with a portal up to 3 m and the ability to work with metal up to 60 mm. Can be equipped with CNC and automated control system.

A more functional model with the ability to cut metal longer than 20 meters costs between 800 thousand and 3 million. Additionally, such an installation can have a module for cutting pipes, a gas burner and up to three cutters operating simultaneously.

Equipment from well-known foreign brands usually costs more than 3 million rubles.

In some cases, the cost must be added to the cost of the power supply, hood and compressors, as well as installation, training and maintenance.

The best manufacturers of plasma equipment

Among the world's manufacturers of CNC plasma cutting machines, the following brands are most famous:

HGG Group produces equipment to solve the most complex problems, including cutting out contours on the surfaces of pipes, beams, and boxes. The Dutch company develops 3D cutting technologies.

The Hypertherm catalog mainly includes hand-held plasma cutting machines. She is one of the leaders in this area. It also produces industrial equipment and accessories, including plasmatrons with various parameters.

The German brand Kjellberg is one of the founders of plasma cutting and many related fields. Known for the HiFocus series, which has become an alternative to laser and other precision cutting methods.

Zinser from Germany is one of the leaders in the field of plasma, gas and autogenous cutting systems. Zinser pipe cutters are supplied to almost all countries of the world.

The Polish-German company Eckert produces industrial-grade thermal cutting machines. It is actively developing not only plasma cutting, but also laser, gas and water jet cutting.

OTC Daihen is an American company specializing in welding equipment, but its plasma cutting machines are no less popular.

Thermal Dynamics is an American brand that combines smart technologies and its own developments. Everywhere implements HeavyCut technology, which consists of cutting with oxygen plasma with a power of 200 amperes.

The developments of the Swedish company SPT Plasmateknik have found their application in difficult industrial conditions. Plasma cutting machines are used by large European engineering plants.

The German corporation Messer Cutting Systems has several large representative offices in Russia and the CIS. Engaged in the implementation of plasma cutting systems, equipment modernization, and production optimization.

In Russia, imported equipment is in demand, but mass implementation is hampered by two significant factors - very high prices for advanced machines, as well as the low productivity of budget models. This is partly why many people choose products from domestic brands. For example, plasma cutting machines from the PLAZMAKROY company are in well-deserved demand. At the same time, the top model with plasma and gas cutting costs just over 800 thousand rubles, which is much more profitable than imported analogues.

How to choose a metal cutting machine

The choice of the required plasma cutting machine is based on the needs of production, taking into account the possibility of expansion. The following technical characteristics are taken into account:

Processing area. It depends mainly on the size of the portal and the parameters of the rack beam moving the plasmatron. The most common plasma metal cutting machines are 1.5x3 meters in size. There are models on sale with portals 2.5 m wide and 12 m long. Larger sizes are made exclusively to order. In this case, the height of the beam above the portal is also taken into account.

Cutting thickness. Depends on the power of the source, as well as the features of the model. It is customary to distinguish several parameters: quality cut - cut thickness with the highest quality characteristics without defects; separation cut - thickness after which various deviations may be observed; minimum cutting thickness.

Accuracy. One of the main parameters affecting the final cost of the machine. On inexpensive models, the accuracy varies between 1–1.5 mm, and 0.3–0.6 mm are considered the best results.

In addition, before purchasing a plasma cutting machine, additional functionality is taken into account:

• the ability to work with complex alloys or certain types of steels;
• plasma marking and marking of products;
• oxy-fuel cutting;
• cutting of uneven surfaces, rolled pipes, corner cutting;
• capabilities of CNC and automation systems;
• coordinate system binding, etc.

Each manufacturer equips its own machines with original additions to improve cut quality, increase convenience and safety. As an example, we can cite the PlasmaCroy equipment (Tolyatti). In addition to the main components, the machine may have:

• automatic height controllers;
• stepper motors;
• industrial computer (analogue of CNC);
• remote control and many other options.

The most common car breakdowns

Like any high-tech equipment, metal plasma cutting machines require regular maintenance, the absence of which will lead to equipment failure. In addition, the following can lead to machine failure:

• violation of operating conditions;
• use of equipment for purposes other than its intended purpose;
• access to unqualified personnel;
• voltage surges, short circuits;
• mechanical breakdowns;
• resource depletion and natural wear of components.

The most common and serious problems are related to the plasmatron itself. In some cases, there is no arc ignition, there is no spark, others may have too large deviations from the specified program, incorrect angle, jumps, displacements, and so on. The list of possible problems depends on the specific machine model. It’s good if the problem can be solved by cleaning the threaded connections, replacing the O-rings, tube fastenings, and wires. The highest costs can be expected when completely replacing the unit.

Failures in the CNC and software are common, but they can be treated much easier - by flashing or replacing the software.

Requirements for plasma cutting equipment

Plasma cutting of metals is regulated by various regulatory documents, among which are:

• GOST 14792-80, applicable to oxygen and plasma-arc cutting. The standard covers sheet steel (carbon, high-alloy, heat-resistant, heat-resistant), as well as aluminum and its alloys. GOST denotes the accuracy of cut products and the quality of the cutting area.
• ISO 9013:2002 is an international standard that contains requirements for thermal cutting equipment (dimensional tolerances, possible allowances, cut surface quality and much more);
• GOST 5614-74, GOST 12221-79 (thermal cutting equipment);
• GOST 12.3.039-85 SSBT (safety requirements);

Source: https://www.plazmakroy.ru/blog/kak-pravilno-vybrat-stanok-dlya-plaz

Characteristics of plasma cutters: how to choose a plasma cutter, which equipment is better and rating of models

It is convenient to use a plasma cutter to cut sheet metal. The quality of the resulting cut is much higher than when working with a grinder. There are no burrs on the surface, and this area does not require finishing. The hot plasma supplied from the device affects only the cut site, without affecting the rest of the workpiece. Work does not involve effort.

Types and purpose of plasma cutters

Before you understand how to choose a plasma cutter, you need to study the existing types of devices. Depending on the area of ​​application they are divided:

• Inverter. They have the ability to cut metal up to 30 mm thick.
• Transformer. Cut metal 80 mm thick.

There is a classification depending on the contact of the cutter with the part.

They are divided:

• Contact. During operation, contact between plasma and metal is required. Its thickness can be up to 18 mm.
• Contactless. In this case, the metal can be very thick and contact with it is not required.

Depending on the energy consumed, there are also varieties. These are the devices:

• Household. Operate from 220 W network.
• Industrial plasma cutter. Operates on a three-phase 380 W network.

How the device works

The choice of a plasma cutter should begin with studying its structure. An electric arc heats ionized air to a temperature of 30,000 degrees. Electric current passes through it. It is directed towards the metal. In the area of ​​the cut it is blown out. The device consists of the following elements:

• Plasmatron. This is a plasma cutter that is connected to the machine using a cable and hose. When cutting metal, an arc occurs between the workpiece and the cutter. Such plasmatrons are called direct action. If a non-metallic surface is cut, an arc is formed directly in the cutter. These are indirect plasmatrons.
• Nozzle. This is the element through which air passes. Depending on its size, the size of the cut and the speed of the work change. The smallest nozzle diameters are 3 mm, and the maximum are 9-12 mm. The nozzle length is selected 1.5-1.8 times greater than the diameter. The longer it is, the higher the speed. But if this value is too large, then the nozzle quickly collapses.
• Electrode. This is a hafnium metal rod located inside the plasmatron. Its other name is cathode.

The cutting process uses air. However, in some cases oxygen, helium or hydrogen are added. This is due to the fact that the surface of the material can oxidize, and these gases act as protective media.

Advantages and disadvantages of units

To understand which plasma cutter is better, you need to know the advantages and disadvantages of the devices. Benefits include:

• in addition to ordinary metal, you can cut aluminum, stainless steel or cast iron;
• no surface preparation required. The presence of rust and paint is allowed;
• the cut is smooth without scale;
• even with a small thickness of the workpiece there is no thermal deformation of the surface;
• safety in operation;
• possibility of forming complex cuts.

However, with all the advantages, the plasma cutter also has disadvantages. These include:

• limitation on cut thickness. The maximum value is 100 mm;
• the workpiece must be positioned clearly perpendicular to the cut;
• You cannot work with two cutters connected to one machine.

Factors influencing choice

When choosing a plasma cutter, you need to consider some factors. These include:

• Current strength. Depending on this value, the arc power increases and the metal melts faster. If you have to work with aluminum, copper or its alloys, then the current strength is selected 6A. For stainless steel and ferrous metals - 4A.
• Duration of switching on. Some devices can work 50% of the time, and then have to rest for the same amount of time. This is enough to cut a certain number of pieces. For industrial purposes, a device with 100% operating time is selected.
• Built-in or external compressor. If the compressor is built-in, then such devices do not have much power and are classified as household devices. If there is an external compressor, it is possible to operate continuously. The pressure in the plasma cutter should not be higher than that produced by the compressor.
• Frequency of nozzle and electrode replacement. This depends on the duration of the work and the thickness of the material being cut. When working with metal 10 mm thick, some consumables can withstand 150 cuts, others 500-600, and industrial consumables last the entire shift.
• The length of the cable and hose should not exceed 20 m, otherwise inconvenience will be created when unwinding them.

new cutting machines

When choosing a device, you need to focus on the plasma cutter rating. The best models include:

• Svarog CUT 40B (R34). Has a power of 3.84 kW. Operates at a voltage of 220 W. Dimensions are 425 x 205 x 355 mm. The device is designed to work with thin sheet metal; lightweight and easy to manage.
• AURORA PRO AIRFORCE 60 IGBT. Connects to a voltage of 380 W. The maximum thickness of the cutting surface is 20 mm. You can work with any grade of material that conducts current. The cutting current is 60 A.
• BRIMA CUT 120. Operates at 380 W. Has the ability to cut sheets up to 35 mm thick. The power of the device is 20 kW. Dimensions: 475 x 330 x 370 mm.
• CEDAR CUT-40B. Voltage consumption - 220 W. Cuts metal sheets up to 12 mm thick.
• Lincoln Electric Tomahawk 1538. Powered by 380 W. Has a carbon electrode. The cutting current is 30-100 A. Dimensions - 455 x 301 x 640 mm.

When choosing a plasma cutter, you need to focus on its parameters. At home, there is no point in purchasing an industrial device; a household one is quite sufficient. The device will work 50% of the time and rest for the same amount of time. During this period, a significant portion of the work can be completed. You can also assemble a plasma cutter yourself, read how here.

Source: https://obrabotkametalla.info/rezat/kakoj-plazmorez-luchshe-vybrat-vidy-rejting

TOP 5 best plasma cutting machines

Flaws:

• Not intended for intensive use in industrial environments.

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BRIMA CUT 120 – the optimal plasma cutter

The average price is from 80 to 90 thousand rubles.

Specifications

• Mains voltage: 380 V
• Power at maximum load: 20 kW
• Maximum cutting thickness: 35 mm
• Air flow: 0.50 l/min
• Cutting current: 20 - 120 A
• Article: brimacut120
• Overall dimensions: 475x330x370
• Weight: 35 kg.

The high-performance inverter is built on the basis of PWM technologies and MOSFET components. Despite the small size and weight of the main transformer, the installation has proven itself to be excellent when dismantling metal structures. The equipment is used for cutting stainless, carbon, non-ferrous metal and copper up to 35 mm thick.

The standard package includes:

• Air sleeve.
• Power return cable.
• Gas type reducer.

• Compared to oxygen cutting, the process is accelerated almost 2 times.
• Economical and easy cutting of thick metal parts.
• Clean and high quality cut.
• Built-in arc adjustment.
• Effective heat dissipation due to numerous holes on the body.
• Possibility of smooth adjustment of key operating parameters.
• Cheap consumables.

• Sensitivity to moisture.

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Cedar cut-40b with compressor – inexpensive to operate

The average cost is 40 thousand rubles.

Specifications

• Mains voltage: 220 V
• Power at maximum load: 7.50 kW
• Maximum cutting thickness: 12 mm
• Cutting current: 20 - 40 A
• Article: cut40b
• Overall dimensions: 515x262x468
• Weight: 27 kg.

The device is designed for air plasma cutting of any conductive material: soft, galvanized, stainless steel, copper, aluminum, various alloys. The thickness of the metal should not exceed 12 mm.

The unit is connected to a 220 V household network and is equipped with a compressor with an automatic air pressure control system. Pressure is directly related to cutting current. This design is famous for the long service life of consumables - the nozzle and cathode of the plasmatron.

As necessary, the compressor is connected to a centralized air supply system or a built-in compressor. Among the features it is worth noting the high-frequency control of arc ignition.

• High quality seam.
• Reliable plasma cutter.
• It connects to a regular 220 V household network, which simplifies the use of the device and expands its scope of application.
• Adaptability to high-speed work.

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Lincoln Electric Tomahawk 1538 – Amazing Performance

Cost – 140 thousand rubles.

Specifications

• Mains voltage: 380 V
• Cutting current: 30 - 100 A
• Article: K12039-1
• Overall dimensions: 455x301x640
• Weight: 36 kg.

The device is suitable for cutting various materials up to 35 mm thick. And thanks to the carbon electrode, air-arc gouging became possible.

The device is connected to a 220 V network. It fully complies with current European and Russian standards. The manufacturer provides a three-year warranty on workmanship and components.

The model differs from analogues in its innovative plasma torch, which creates a powerful, narrowly directed plasma vortex. Minimal heating of the metal and the absence of deformation make it possible to avoid additional operations - tempering and annealing. Therefore, the price of the finished product is minimal.

• Innovative arc ignition.
• Long service life of the nozzle and electrode.
• Efficient air cooling system.
• High cutting quality.

Sergey Odintsov

Source: https://electrod.biz/obzoryi-produktsii/top-5-luchshih-apparatov-dlya-plazmennoy-rezki.html

Air plasma cutting. How to choose a plasma cutter

Air plasma cutting of metal is a safe and more efficient alternative to labor-intensive mechanical cutting with cutting discs and gas cutting with explosive gas torches. Today, most manufacturing, construction and repair enterprises, as well as private craftsmen who work with metals and metal structures, are trying to switch to this modern method, purchasing and mastering new equipment - devices for plasma cutting of metals.

How does the device work?

A device for plasma cutting of metal (other names: plasma cutter, plasma cutter) is special equipment for cutting metal, where a plasma jet acts as a cutting element.

Heated compressed air under pressure of several atmospheres is supplied to the nozzle of the apparatus. An arc is excited between the nozzle and the electrode, which converts the gas flow into a plasma jet with a temperature of 5,000-30,000 degrees and a feed speed of 500-1,500 m/s.

 The resulting plasma jet quickly and easily melts the cut line, removing liquid metal with a plasma stream.

The main working elements of the device are a plasma torch (actually, the plasma cutter itself), a nozzle, electrodes and a compressor. Nozzles and electrodes are typically made from tungsten, hafnium or copper. The speed and functionality of the device depends on the length and diameter of the nozzle. The longer the nozzle, the faster the cutting occurs.

 But at the same time, it wears out faster. The optimal parameters of the nozzle are considered to be a length of 1.5-1.8 times the diameter. The compressor is used as a source of compressed air necessary for plasma formation. Some models of plasma cutters are equipped with a built-in compressor.

If a built-in compressor is not provided, an external compressor or a stationary pneumatic network is used to supply air.

Advantages of air plasma cutting

• High speed. Compared to alternative cutting methods, the air-plasma method has a high cutting speed, thereby increasing the productivity of the craftsman. The surface heats up locally, only at the cut site, so the workpiece cools down very quickly after work.
• High quality cut . The plasma jet provides a high-quality cut - precise, clean, without thermal damage to the surface. The surface of the workpiece after cutting does not require finishing or cleaning.
• Versatility and functionality . Plasma cutters can cut almost all types of metals and alloys. Depending on the technical characteristics of a particular model, the thickness of the cut material can reach 50 mm. A plasma cutter can be used to perform not only simple straight cuts, but also complex shaped cuttings.
• Safety . The air plasma cutting method is considered safer than gas cutting. The operation does not require the use of explosive, heavy and bulky gas cylinders. All you need is a compressor or connection to a pneumatic network.

Features of choice

If you decide to buy a plasma cutting machine, our information about important selection parameters and the main technical characteristics of plasma cutters will be relevant to you.

Current strength 

Main technical characteristics of a plasma cutting machine. This indicator primarily determines the thickness of the metal that the plasma cutter can handle. As well as the speed of the cutting process. The higher the operating current, the faster the metal will heat up and melt.

The choice of model based on current strength will depend on what kind of metal and how thick you are going to work with workpieces. The standard recommendations are as follows. To cut copper and copper alloys, brass, and aluminum 1 mm thick, a current of 6 Amperes is required. To cut sheets of different types of steel and other ferrous metals 1 mm thick, you will need a current of 4 Amperes.

This is how the required current strength is calculated: the thickness of the working metal is multiplied by the current value recommended for 1 mm. For example, to cut a part made of steel 20 mm thick, you will need a plasma cutter with a current of 80 Amps (20 * 4). To cut a part of the same thickness, but made of copper, you will need a machine with 120 Amperes of current (20 * 6).

Most models of plasma cutting machines are designed to cut various metals of different thicknesses. The current strength is set using a manual regulator. The adjustment can be smooth or stepped. Continuous current control is considered more convenient and efficient. It makes it possible to more accurately set parameters for each type of work.

Duration of activation

If you plan to use the plasma cutter intensively and for a long time in professional activities, in order to avoid overloads and failure of the device, be sure to pay attention to the useful time coefficient. 

The standard operating cycle of a plasma cutter is 10 minutes. These 10 minutes include both work time and “rest” time (pauses in work). The concept of “on duration” refers to the time within the operating cycle during which the installation can operate continuously. If the device’s duty cycle is 60%, this means that out of a 10-minute working cycle, you can work in cutting mode continuously for 6 minutes. The device should “rest” for the remaining 4 minutes.

PV is indicated in the technical documentation and is usually tied to the maximum current strength of the model. That is, if you work at a lower current, the on-time factor will be longer. For professional use, plasma cutters with a duty cycle of at least 80% are recommended. For household and semi-professional work, an indicator of 50-60% will be sufficient.

Power type

Metal plasma cutting machines can operate from a single-phase or three-phase network. The breadth of application of the device, as well as its performance and operating speed, will depend on the power supply.

Plasma cutters powered by a single-phase 220 Volt network are convenient in that they allow you to carry out work almost anywhere where it is possible to connect to a household outlet. But at the same time, they have power limitations.

For professional use and cutting thick materials, you will need high amperage. Three-phase devices powered by 380 Volt industrial power networks have high current levels.  

Source: https://GreenLoft.ru/vozdushno-plazmennaja-rezka-kak-vibrat-plazmorez-.html

3 types of plasma cutting machines - which one to choose?

Today, the following basic requirements are imposed on metal cutting:

• quality of cutting, that is, no need for processing after cutting;
• saving material;
• automation of the process itself. 

In all three aspects, plasma cutting is a good choice, as it stands out for its combination of ease of use, quality results and affordability. It is represented by three types of machines: manual, portal and portable.

Manual cutting

To put it simply, a manual plasma cutting machine is a box to which a hose and a torch are connected. The kit includes a cutter, that is, a plasma torch, a special mass clamp, as well as a power source, which is the device itself. A compressor providing gas supply is also built in or simply used as a separate installation unit. From it, from the main line or cylinder, plasma-forming gas of different types comes:

• air
• nitrogen
• mixture of nitrogen and air
• argon hydrogen gases and other compositions.

Characteristics of manual cutting

If this is manual plasma cutting of metal, then plasma torches can be of direct or alternating current. The work of the former is characterized by high efficiency, so installations for manual welding are often equipped with a constant source, but machines with alternating current are also suitable for processing soft alloys.  

A hand-held plasma cutting machine allows for high-quality metal cutting in industrial conditions. It does not require the use of expensive and environmentally hazardous materials. All you need is electricity and compressed air or nitrogen. The choice of a specific gas is made depending on the budget.  

Flaws

Manual plasma cutting is not capable of providing such a high speed as, for example, cutting on a CNC machine, and also consumes quite a lot of energy. This is its main disadvantage.

The accuracy of this technology is slightly lower than in the case of other, more automated methods.

Advantages

Unlike portal machines, equipment for manual plasma cutting of metal is compact.

Versatility is the main advantage of such installations. They are small, and therefore easy to transport, and all that is needed for their operation is a connection to the electrical network.  

Gantry machines

Gantry plasma cutting machines are very large installations that have a surface in the form of a table on which metal sheets are laid. They are produced in different modifications, but the basis is a portal mechanical design. It has the following advantages:

• high speed;
• increased accuracy of setting the position of the cutter itself;
• the highest processing quality (on par with laser);
• maximum automation;
• a large selection of devices that are easy to use. 

Gantry plasma cutting machines have a rack and pinion drive, which allows backlash-free movement. Overall, they not only provide maximum automation, but are also easy to use, meaning they do not require a specially trained operator.  

Gantry plasma cutting machines have different features, which depend on the type of portal movement. In the installation, they are reflected in the control methods: there are single-drive and dual-drive systems, as well as servo and stepper motors. There are also differences in the number of coordinates for moving the cutter - for example, an oblique cut is possible, during which a chamfer is obtained. The plasma cutting portal can have very different sizes, and the number of torches can vary significantly.

The gantry plasma cutting machine in action is shown in the following video:

Application

Portal plasma cutting is used mainly for cutting black steel and stainless steel, as well as aluminum (usually sheet thickness up to 80 mm). It allows for particularly high-quality cutting with the highest productivity. But it occupies a fairly large area and requires a powerful source of electricity for its operation.  

If you are thinking about choosing a technology, then evaluate the number and scale of operations that are supposed to be performed, as well as the material of the workpieces and the desired results in terms of cut quality. In all these parameters, gantry plasma cutting has advantages as it provides outstanding performance and better quality. As a result, a portal plasma cutting installation quickly pays for itself.  

Portable devices

Portable, that is, portable equipment for plasma cutting of metals has a special compartment where you can put sheet metal.

It can be described as a longitudinal frame with slats for moving the carriage, where a transverse beam and a CNC unit are installed.

The presence of a liquid crystal screen and keyboard makes it possible to control the work process, but minimal intervention is required from the operator. The presence of CNC allows us to guarantee maximum safety when working with plasma, which is very important.

Such numerically controlled devices are complexes for cutting sheet metal. Portable plasma cutting makes it possible to successfully, with high precision, cut a workpiece according to existing drawings, and it is possible to process both linear and shaped parts with a particularly complex contour.

 The CNC system also provides other advantages:

• high precision metal cutting;
• excellent cutting quality;
• the ability to ensure repeatability of cut parts;
• convenience and automation of the cutting process;
• optimization of energy consumption, which is achieved by using modern software. 

Portable plasma cutting makes it possible to cut a wide range of materials:

• composites
• polymers
• wood (as well as chipboard and MDF)
• cardboard
• leather
• metal and much more. 

Portable plasma cutting has a wide range of applications in various fields of activity. Using this technology, they produce facades, parquet, furniture and doors, various advertising elements, interior decor elements and even souvenirs, and create beautiful artistic panels for home decoration.  

The low weight of the machines allows them to be easily moved relative to the sheet. This installation is a good option for small-scale production, as it successfully replaces portal cutting, but is inferior to it in productivity. It is used both in the workshop and on construction sites.

Source: https://plasmainfo.ru/technology/425/

How to choose a plasma cutter for your home - tips for choosing a device

07.08.2018

Household plasma cutters are most often used during construction or in the production of various metal products. At home, the cutter can help with roofing work, car repairs, installation of fences and much more.

Classification of plasma cutters

Plasma cutting machines are classified according to different parameters, which ensures their high efficiency. One of the important characteristics when purchasing a plasma cutter is its purpose. There are several types of equipment:

1. With contact arc ignition . Used to work only with conductive metals or materials. The arc is ignited at a distance of 1-5 mm or when the electrode (cathode) directly touches the workpiece.
2. With non-contact arc ignition . Can be used for cutting non-conductive materials, or metals covered with paint or large layers of rust

Some devices may additionally have an arc or argon welding mode (example Edon CT-315 or CT-420).

To start working with a plasma cutter, you need to determine the contours of the part and prepare the workplace.

Types of plasma cutting

• Classic cutting. During operation, only electricity and air are used.
• Cutting with shielding gas. The cut surface has the most even edges, and a protective gas cloud prevents outside influence on the work process.
• Cutting with water. The principle of operation is the same as in a gas environment, but water also cools the plasmatron.

There is also a criterion by which devices are identified. Depending on the equipment used, plasma cutters can be:

1. Inverter . The devices are designed for cutting metals with a thickness of no more than 30 mm. The most common type of equipment, which is economical and compact in size.
2. Transformer . This type of plasma cutter is used in industries where they constantly work with metal. The equipment is capable of cutting steel up to 80 mm thick, but its operating costs are high.

How to choose plasma cutting equipment

Qualified consultants at the online welding equipment store Optoweek.com.ua recommend first of all deciding on the thickness and composition of the metals that will be cut using a plasma cutter. For domestic purposes, an inverter type with an on-time of at least 60% is suitable. Cutting metals requires different amperages:

• Copper alloys require a current of 6 amperes for every millimeter of metal thickness. If you plan to constantly cut copper plates 10 mm thick, then you need to purchase a device with a current of at least 60 amperes.
• Steel-based alloys are cut at 4 A/mm. To cut metal 20 mm thick, you will need a device with a current strength of at least 80 amperes.

The speed of metal cutting also depends on the current strength. It is better to give preference to welding devices that provide the ability to regulate the current strength. There are two types of adjustment:

Smooth regulation allows you to select the most optimal current strength, even for alloys such as aluminum. The stepped option will allow you to quickly switch the current strength depending on the metals that will be cut. The most common plasma cutter nozzle diameter is 3 mm. When choosing a device, it is important to take this parameter into account and, if necessary, change it to give preference to another brand or model of equipment.

Ukrainian plasma cutter Paton PRI-40S

The PRI-40s plasma cutter is intended for use in domestic conditions. Cutting occurs without the use of gas or water, which makes servicing the device cheaper.

• The current strength is 40 A and allows you to cut metal up to 12 mm thick.
• The efficiency of the device is 90%.
• The on-time is 60%, which allows you to work for 6 minutes out of 10.
• The device weighs only 8.3 kg.

The cost of equipment from a Ukrainian manufacturer is in the range of 12,500-13,000 UAH, which makes it affordable for purchase by every household. The plasma arc provides an even weld on various metals, provided that the thickness of the material corresponds to the current strength.

Chinese plasma cutter Edon EXPERT CUT-40

Products from Chinese manufacturers have proven themselves in many industries. The equipment is of high quality and low cost.

• The Edon EXPERT CUT-40 has a maximum current of 40A and can cut steel up to 12mm thick.
• The efficiency of the device is 85%.
• The switching time is 60% and this is enough for continuous cutting of a large amount of metal.
• Consumables, such as a nozzle, electrode (cathode), protective cap and igniter, are always on sale and are suitable for all types of PT30-40 plasma torches.

The equipment operates in air. The weight of the device is 8 kilograms. The plasma electrode copes well with the task of cutting various alloys.

The cost of the device ranges from 6100-6500 UAH.

If you need help choosing a plasma cutter, contact the managers of the Optoweek online store by calling the numbers listed on the website.

Source: https://optoweek.com.ua/blog/kakoj-plazmorez-kupit-dlya-doma

Which air plasma cutting machine is better: How to choose a plasma cutter?

Theoretically, a sheet of metal can be cut with a special hacksaw, or (a little faster) the popular “grinder”. Of course, this will inevitably result in a cut with deformed edges, which must be cleaned and polished at a subsequent stage. Additionally, mechanical cutting only recognizes straight lines.

Therefore, in practice, it is better to use devices specially designed for cutting metal. Just a dozen years ago, existing oxygen machines, although they cut quickly and in a curved manner, also set strict conditions: the metal must be iron-containing, otherwise the cutting will not take place.

In addition, they were bulky, since they included an integral appendage - an oxygen tank, which was not only heavy, but also very explosive.

Today, these problems are a thing of the past, since the development of modern technology makes it possible to use lightweight and compact air plasma cutting devices, abbreviated as plasma cutters.

Plasma from air

Plasma technology is simple, like all ingenious things. An electric arc occurs in the narrow channel of the plasma torch, and air is forcefully blown through this arc, intensively cooling it. The air is ionized, turning into a gas that conducts electricity. Its exit speed is maximum: about 2-3 km/sec.

Passing through a layer of such ionized gas, the electric arc creates a plasma jet, the operating temperature of which can reach 25000-30000°C . The resulting plasma arc easily melts the desired cut line, while simultaneously removing the liquid metal with a plasma stream.

Plasma electrodes and nozzles are usually made of copper, tungsten (thorium, lanthanum reinforced) or hafnium. The high-temperature plasma jet cuts metal quickly, accurately, efficiently, regardless of its thickness (from 0.5 to 50 mm), does not require the inclusion of iron in the material, executes the most complex curved lines, and most importantly, is completely safe.

The plasma arc is directed from top to bottom, so the cutter must be held at right angles to the surface being cut. The cut line turns out to be perfectly clean (no scale, no deformation) and extremely accurate (deviations are hundredths of a percent).

To achieve perfect accuracy, it is necessary to select the optimal cutting speed (sparks should fly from the reverse side) and the correct welding current. The strength of the required current depends on the thickness of the metal being cut, which is always indicated in the technical characteristics of the device.  

Plasma cutting is an innovative alternative to mechanical and oxygen cutting.

Air-flame cutting devices have undoubted advantages:

· During the cutting process, a large area of ​​the metal being cut does not heat up, which allows it to cool much faster.  

· High cutting speed of metals of any thickness.

· Plasma cutter – universal: cuts almost all types of metals and alloys, as well as non-metallic materials (for example, stone)

· The cut is of high quality, eliminating subsequent processing of the line.

· Cutting out parts of complex shapes is possible

· Savings - no need to purchase oxygen or propane-butane cylinders

· Safety at work, since explosive cylinders are no longer needed.

The Italian company DECA is the best among European manufacturers of plasma cutters

When choosing a plasma cutting machine, its power is of great importance. Determine what thickness of metal you are going to cut, and, based on this, choose the current strength of the device.

The Italian company DECA produces high-quality plasma cutters at an affordable price, the current strength of which corresponds to the nominal value stated in the technical specifications.

Compact and lightweight plasma cutting machines Deca I-PAC 1235 and Deca I-PAC 1235K easily make a clean cut, do complex figured cutting, reaching a current strength of 35 A, which makes it possible to cut metal up to 12 mm. The air pressure is adjustable, that is, the burner flame can be set according to needs.

The current supply technology is inverter, which eliminates fluctuations and surges in current and voltage, and also saves energy twice as much. Power consumption is low, so the device can be freely connected to a generator. The DecaI-PAC 1235K model has a built-in compressor that produces a stable and even plasma arc. You can even cut the top layer of metal without damaging the bottom layer. The arc switches automatically when cutting gratings or perforations.

Plasma cutting machines Paton – for all types of metals

High functionality with low weight and compactness - these are the main characteristics of air plasma cutting machines from the Paton company. They work effectively with alloy steel.  

On the website of the online store “With Bargaining” you will find several models of the indicated company from the Paton PRI-L line, which differ from each other in power and are capable of producing a maximum current from 40 A to 120 A. According to the specified power, cutting of black and colored products is guaranteed metals (or alloys) of various thicknesses: L40 - 8mm, L60 - 15mm, L100 - 25mm, L120 - 40mm.

Italian brand ERGUS: high current with low energy consumption

Models of plasma cutters from the Italian company ERGUS, which produces high-quality welding equipment, are reliable and safe.

Built-in microprocessor electronics (advanced inverter) allows you to produce powerful current “on the mountain”, while consuming a small amount of energy.

Models from ERGUS: Plasma 404 DP TR (current 40 A, cutting depth - 14 mm), Plasma 707 DP (current 70 A, cutting depth - 20 mm), and Plasma 909 DP (current 90 A, cutting depth - 25-30 mm) are equipped with “native” components, assembly is factory, Italian.

Such an important characteristic as the operating time of plasma cutters from ERGUS is high, which helps to efficiently perform long cuts.

Particularly noteworthy is the new product from ERGUS - the plasma cutting machine Plasma Cutvert 35/50, which weighs only 10 kg and, at maximum current, has a duty cycle of 50%. It is reliable and, thanks to the use of inverter technology, guarantees high-quality cutting while consuming 4 kW of electricity. Convenient, practical and easy to maintain.

Plasma cutters for hobbyists from the Italian brand Telwin

The Italian company Telwin has taken care of craftsmen who constantly need to cut metal, but want to do it with super high quality and very inexpensively.  

For this case, lightweight and inexpensive, but effective models from Telwin are suitable: Technica Plasma 31 (small, durable, weighs only 6.4 kg), as well as tools with a built-in compressor: Technica Plasma 34 Kopressor and Technology Plasma 54 Kopressor.

TechnicaPlasma 31 and TechnicaPlasma 34 have a relatively short duty cycle (on duration) - 25%, but they also consume a minimum of electricity - 2.8 kW at maximum load.

The built-in compressor provides Telwin models with a wide output current range. The Technology Plasma 54 Kopressor model has a range from 7 A to 40 A.

For models from Telwin, the characteristics indicate the duty cycle at the maximum welding current. It should be taken into account that if the device is used with the lowest power, then its operating time increases two to three times, reaching 60-70%. This is a very high figure.

You will find a wide selection of high-quality welding equipment for amateurs and professionals, produced by leading European companies, in the online hypermarket “With Bargain”. 

Source: https://storgom.ua/novosti/kakoi-apparat-vozdushno-plazmennoi-rezki-luchshe-kak-vybrat-plazmorez.html

Plasma cutting and welding machine: the best models

Plasma welding, cutting, and soldering machines have become widespread due to the ability to perform tasks with high efficiency in a short time. Using them you can work with almost any metal and electrically conductive materials.

Apparatus for plasma cutting and welding: description

Cutting occurs by melting and mixing metal with high-temperature plasma, which is created by an electric arc from an inert substance. Thus, in the device, atmospheric ionized air is directed through a hole in the burner under pressure in the required quantity and converted into a plasma state.

The final result and efficiency can be improved by using several types of inert gas, which is especially important for non-ferrous metals. That is why you should be careful when selecting devices and take into account all the parameters.

Choice

The plasma cutting and welding machine is suitable for processing refractory, non-ferrous metals (aluminum, copper), ferrous metals (cast iron, stainless steel and variants with various alloys), as well as other types of materials. Today, stores offer a wide range of tools; to choose the best option, you need to decide on the existing tasks and operating conditions. After this, a selection is made from suitable models.

The main criterion is the materials with which the device can work. It is recommended to choose a unit with a wide range of functions and the ability to cut various metals.

It should be noted that the cost directly depends on the functionality and popularity of the brand. You also need to pay attention to the dimensions of the cutting thickness.

Most often, this parameter is indicated for sheets of steel; less often you can find a designation for stainless steel. Using this information, you can understand the cutting capabilities of various options.

Ignition of the arc

All models are united by an identical operating scheme and general design, while these parameters are the same for any manufacturer. The difference lies in the method of igniting the arc; the following options are possible:

• Turning on the pilot arc excites the plane of the main element. That is, first the pilot arc with low power, which is located on the additional circuit of the plasma torch, is activated. Using compressed air, an arc is formed, it closes on the plane of the material, thereby forming the main arc. A device for plasma cutting and welding with a similar ignition method is the best option for working with metal sheathing and mesh.
• Excitation with high frequency. In this case, arc formation occurs only under the condition of an electrical discharge between the plasma torch head and the sheet of material. This technique is the most common today.
• Contact ignition. The arc occurs when it comes into contact with the workpiece. Most often found on devices of the budget category, characterized by low current strength. They are characterized by rapid wear of the plasmatron nozzle and its other parts. Currently, manufacturers are increasingly installing other ignition options.

Taking into account the information indicated above, it will be easier to decide on the desired model and not be mistaken with the available properties.

Advantages and disadvantages

The device for plasma cutting and welding, the photo of which is presented above, has many positive aspects, among which the following are worth noting:

• The cutting quality is characterized by high precision and accuracy. Even with little experience in the relevant work, it is easy to prevent such defects as sagging and burrs on the surfaces being treated.
• Safety. The likelihood of fire is minimized in the absence of explosive and flammable gases. Only the manual arc method can provide similar characteristics.
• No sheet deformation, waves or cracks on metal surfaces.

Some devices are quite expensive, which is the only drawback. At the same time, you can always try to choose an option with a suitable price and the necessary characteristics. For cutting at home, a unit with average power characteristics will be quite sufficient.

“Gorynych”

The Gorynych device is a Russian-made plasma welding and cutting machine suitable for work involving high-temperature exposure. Can be used for both metals and other categories of materials that are not subject to combustion. It is an electric arc generator of plasma formed when an electron arc is heated.

The vapors of the working composition, reaching the ionization temperature, are removed by a plasma jet under pressure. The working fluid can be ethyl alcohol or water; the choice of one or another option is carried out in accordance with the tasks. The jet has a temperature of about 6000 degrees.

The main elements of the device are the control unit and the plasma generator.

“Gorynych”, a plasma welding and cutting machine, receives mostly positive reviews. Many users note its high speed and versatility.

“Svarog CUT 40 B”

The device is lightweight and compact in size; its main purpose is to process thin materials. It is created on the basis of an inverter circuit and special transistors. The unit is equipped with a Euro connector for the burner and a convenient control panel. During the work, no deformation of the material occurs, and it is advisable to cut sheets with a thickness within 0.12 cm.

It has the following principle of operation: the current approaches the electrode of the plasma torch, the plasma torch itself is ignited by an oscillator with a high frequency after pressing the button.

Advantages:

• no possibility of tipping due to sufficient stability;
• efficiency;
• low cost;
• there is no need to create certain working conditions;
• intuitive controls;
• Convenient transportation due to the special handle and low weight.

Among the disadvantages, it is worth noting the low resource of the plasmatron device.

Rilon CUT 40

This unit, as well as the Gorynych plasma welding and metal cutting machine, allows you to work with any type of conductive substrate: these are various alloys, galvanized steel, aluminum, copper.

Non-contact ignition operates on high-frequency control. Can be used for materials with a thickness of about 20 mm, thanks to the high level of cutting current. The degree of impact depends on the thickness of the workpiece and the characteristics of the metal.

Using a digital indicator, the necessary criteria are established.

Advantages:

• used in a wide temperature range;
• provides processing of any alloys and materials;
• based on modern technology;
• characterized by high cutting speed and high-quality seam formation;
• There is no deformation of the workpiece.

It is worth noting that the device is not suitable for industrial conditions and active use.

BRIMA CUT-120

The device for plasma cutting and welding is distinguished by the low weight of the main transformer and compact dimensions, while it is optimally suited for use in the dismantling of metal structures. Suitable for working with copper, non-ferrous metal, carbon and stainless steel with a thickness of no more than 35 mm. Consists of a gas reducer, a return power cable and an air hose.

Advantages:

• efficiency;
• gradual change in the main process parameters;
• high-quality heat dissipation due to the presence of many holes in the case;
• possibility of arc adjustment;
• efficient cutting of material;
• easy and clean processing of metal elements with large thickness;
• high speed of work.

FUBAG PLASMA 40

The plasma cutting and welding machine is suitable for any conductive materials with a thickness of no more than 12 mm. Consumable elements such as the cathode and nozzle have a long service life. The arc ignition has high-frequency control.

Positive sides:

• ensures fast cutting of workpieces;
• connection to a standard 220 V network is possible, thereby expanding the scope of use and simplifying operation;
• fairly reliable cutter;
• a high-quality seam is formed without sagging.

Source: https://FB.ru/article/263671/apparat-dlya-plazmennoy-rezki-i-svarki-luchshie-modeli