Plasma Cutters

The plasma cutting process allows you to cut through numerous types of metals cleanly, using a special plasma torch.
During the process, a gas is expelled at very high speed from a nozzle, creating an electric arc between the electrode and the element to be treated, thereby transforming the gas into plasma. The latter is capable of mowing the metal to its melting temperature.

AgriEuro offers a range of professional plasma cutting machines. These are Italian-made products that boast high performance and reliability.

The inverter plasma cutting machines in the catalogue allow you to cut virtually any metal, including iron, stainless steel, aluminium, brass and copper, thanks to their powerful torch.

These models can be connected to a standard domestic power supply and guarantee a 30% duty cycle at a maximum current of 35 amps, ensuring optimal results even in the most intensive jobs. This method is widely used in industrial, craft and hobby contexts thanks to its efficiency and precision in working with different types of metals such as steel, aluminium and copper.

Plasma cutting allows many types of metal to be cut. This technique is suitable for all requirements, as it allows sheet metal of any thickness to be cut.

Manual plasma torches can cut sheet metal up to 50 mm thick, while automatic torches can cut sheet metal up to 130 mm thick. Cutting can be performed using small torches, but also with large industrial machines that can cut sheet metal up to 100 mm thick.

Plasma cutters are used to cut conductive metallic materials such as steel, stainless steel, aluminium and copper. Thanks to plasma technology, it is possible to make quick, precise and clean cuts, even on very thick materials.

This cutting technique is mainly used in metallurgy, but also in other fields such as air conditioning, refrigeration and transport industries.
Plasma cutting can also be used in the shipbuilding industry and in companies that cut pipes and similar materials.

Plasma cutters are suitable for various activities, including:

• Cutting metal sheets: plasma technology allows sheets of different thicknesses to be cut easily and accurately, avoiding distortion of the material.
• Industrial and mechanical repairs: often used for maintenance and repair work on metal components in industrial plants, these machines guarantee speed and precision in cutting.
• Craft projects and customisation: the versatility of plasma makes it possible to create shapes and designs on sheet metal, making this technology ideal for design and customisation work.

This technique lends itself to every need, as it allows sheet metal of any thickness to be cut.
Manually operated plasma torches can cut sheet metal up to 50 mm thick, while automatic torches can cut sheet metal up to 130 mm thick.
Cutting can be performed using small torches, but also with large industrial machines that can cut sheet metal up to 100 mm thick.

Plasma cutters are composed of several key components that determine their operation and effectiveness. The main components of a plasma cutting machine are listed below:

• Plasma generator: this is the heart of the machine, responsible for generating the plasma arc. This component converts electrical energy into heat, creating a plasma jet that reaches extremely high temperatures, necessary to melt the material to be cut.
• Cutting torch: the torch is the tool that the operator uses to guide the plasma jet onto the material to be cut. Inside it are electrodes and nozzles that control the plasma flow, ensuring a precise and direct cut.
• Cooling system: essential to prevent the machine from overheating during operation. Some models use an air cooling system, while others, more advanced, use a liquid cooling system to ensure greater operating efficiency.
• Air compressor (optional): in models with an integrated air compressor, this component generates the compressed air required for the plasma ionisation process. In models without an air compressor, an external air compressor is required.
• Control panel: this allows you to set cutting parameters such as amperage, speed and operating mode. Some models offer advanced functions for optimising the cutting process based on the thickness and type of material.
• Cables and power supply: the machine requires a stable connection to a power source, and some models are designed to also be connected to a motor generator, ensuring flexibility in environments without a fixed mains supply.

A plasma cutter works by creating a highly ionised plasma jet that passes through the material to be cut, melting it and pushing the molten metal away to complete the cut. The process begins when the operator activates the torch, which emits a high-intensity electric arc between the torch's internal electrode and the workpiece. This arc heats the compressed air (or inert gas) passing through the torch, transforming it into plasma, an ionised gas that reaches temperatures above 20,000°C.

The first thing to know is that plasma cutting produces a lot of smoke, so the cutting machine must be used outdoors with appropriate protective equipment. After turning on the machine, the torch must be brought close and the remote ignition activated to start the metal melting phase. The torch must then be positioned at an appropriate distance to obtain a smooth and clean cut.

The operation of plasma cutters can be divided into several steps:

1. Creation of the plasma arc: when the machine is turned on, an electric arc forms between the electrode and the workpiece. Compressed air is forced through a narrow nozzle, where it is ionised by the heat of the electric arc, transforming into plasma.
2. Cutting the material: the ionised plasma is directed onto the metal through the torch, melting the material. The pressure of compressed air or gas pushes the molten material out of the groove created by the cut, leaving a clean and precise edge.
3. Power control: the power level, expressed in amperes, directly influences the cutting capacity. The higher the current, the greater the thickness of the material that the machine can cut. More powerful machines, with amperage up to 300, can cut thick materials, up to 20 mm or more.
4. Duty cycle and cooling: during operation, plasma cutting machines accumulate heat. To prevent overheating, a duty cycle is provided, which establishes the maximum continuous usage time followed by a cooling period. Machines with a 35% duty cycle at 300A, for example, can operate for 3.5 minutes every 10 minutes of operation, leaving the remaining 6.5 minutes for cooling.

Models with an integrated air compressor are more practical in environments where an external source of compressed air is not available. This feature allows the machines to be used in open spaces or for mobile operations. In addition, modern plasma cutting machines are designed to be used with motor generators, allowing them to operate in environments without direct access to the mains power supply, supporting voltage fluctuations of up to +/- 30%.

Plasma cutting machines offer a number of advantages over other cutting techniques such as oxygen cutting or mechanical cutting.

This technique can offer precise cuts, regardless of the thickness of the material to be cut, but it depends heavily on the machinery used and the skill of the operator. Furthermore, it is quick to perform and can be applied for various purposes, such as cutting electrically conductive materials, and ensures precision even in the presence of edges and aesthetic defects.

The main advantages are as follows:

• Cutting speed: plasma allows cuts to be made much faster than other methods, such as oxyacetylene or disc cutting, making this technology ideal for large-scale operations or for those who need to work quickly on multiple pieces.
• Precision: thanks to the thin plasma column, it is possible to obtain clean edges and very precise cuts even on thin materials. This reduces the need for post-cutting finishing, saving time and resources.
• Versatility on materials: plasma cutting can be used on a wide range of conductive metals, including steel, aluminium, copper and various alloys. This ability to work on materials with different properties makes it suitable for multiple applications, both industrial and craft.
• Reduced thermal deformation: compared to oxy-acetylene cutting, plasma generates less heat, reducing the risk of deformation in the material. This is particularly useful when working with thin sheets or materials that are sensitive to heat.

Plasma cutting also has certain advantages over other metal cutting systems. For example, compared to oxy-fuel cutting, plasma can be used on a wider range of metals, including non-ferrous metals such as aluminium and copper, which cannot be cut with the oxy-fuel system. Furthermore, unlike mechanical cutting, it does not require direct contact between the blade and the metal, reducing wear and tear and extending the life of the tools.

There are practically no drawbacks, the main one being that when low-quality tools are used, the cut must be finished.

The plasma cutters available on AgriEuro share some fundamental technical characteristics that determine their performance and versatility in different applications. Below is a brief description of the main technical specifications to consider.

• Maximum amperage: this indicates the power of the machine and directly influences the maximum cutting thickness of the material. The higher the amperage, the thicker the metals that can be cut. The machines on AgriEuro offer amperage ranging from 25 to 300, allowing you to work with thicknesses up to 20 mm. A higher amperage value is useful for industrial applications, where deep cuts and resistant materials are required.
• 40°C service: the 40°C duty cycle indicates how long a machine can operate without interruption before requiring a cooling phase. For example, a machine with 300A at 35% can work for 3.5 minutes over a 10-minute period, with the rest of the time devoted to cooling. The duty cycle becomes more favourable at temperatures below 40°C, allowing for prolonged use of the machine before overheating affects performance.
• With or without an integrated air compressor: models with an integrated air compressor offer the advantage of not requiring an external source of compressed air, making the machine more autonomous and suitable for mobile applications or in environments with limited resources. Machines without an air compressor, on the other hand, while requiring an external air compressor, tend to offer greater power and flexibility in more complex operations.
• Maximum cutting thickness: the maximum cutting thickness represents the machine's ability to work on metals of different thicknesses. The plasma cutters on AgriEuro can cut metals with thicknesses ranging from 8 mm to 20 mm, allowing you to select the most suitable machine for your work requirements.
• Power generator +/- 30%: some machines can be connected to a power generator, allowing them to operate even in environments without a fixed power supply. These models are designed to tolerate voltage fluctuations of up to +/- 30%, making them extremely versatile in situations where the power supply may be unstable.

When choosing a plasma cutting machine, it is essential to consider certain technical characteristics to ensure you purchase the product best suited to your needs.

Factors to consider include:

• Power and amperage: for those working with thick metal, a machine with higher amperage is essential. If you are working with thinner materials or performing precision tasks, models with lower amperage may be more suitable.
• Duty cycle: it is important to check the duty cycle of the machine, especially if you intend to use it for extension periods. A high duty cycle allows you to use the machine for longer without interruptions for cooling.
• Integrated or external air compressor: those who work in mobile environments or need a more compact and autonomous machine may prefer a model with an integrated air compressor. On the other hand, those who need high power may opt for a machine with an external air compressor.
• Compatibility with motor generator: if you work in places without an electricity supply, the ability to connect the machine to a power generator becomes an essential advantage.

Based on these characteristics, there are different types of customers for whom plasma cutters are particularly suitable:

• Industrial professionals: for those who work in production environments where it is necessary to cut thick materials on a large scale. In this case, a powerful machine with high amperage and a high duty cycle is essential.
• Craftsmen and blacksmiths: for precision work and for creating details on thinner metal materials, a machine with medium power and an integrated air compressor may be ideal.

Buying from reliable and recognised brands is essential to ensure performance, reliability and durability. At AgriEuro, you can find some of the best brands of plasma cutting machines, here are the main ones:

• Awelco plasma cutters: Awelco is a brand specialising in the production of welding and plasma cutting machines. It offers reliable and easy-to-use solutions that are particularly appreciated for their value for money.
• GYS plasma cutting: GYS is a French company known for its technologically advanced solutions, specialising in welding and cutting equipment. Its plasma cutting machines are appreciated for their power and cutting precision, making them ideal for professional use.
• Helvi plasma cutting machines: Helvi is an Italian brand that manufactures welding and plasma cutting equipment. It is known for its reliability and sturdy machines, suitable for both professionals and advanced hobbyists.

Buying a plasma cutting machine on AgriEuro offers numerous advantages that make the shopping experience safe, fast and convenient. Here are the main reasons to choose AgriEuro:

• Fast and free shipping: AgriEuro offers fast and free shipping, managed by its own logistics centres, ensuring short delivery times throughout the country.
• Spare always available: you can order original spare parts for every product purchased, ensuring the maintenance and durability of the machines.
• Attentive and personalised after-sales service: AgriEuro offers dedicated customer service, ready to provide technical assistance and advice tailored to the specific needs of each customer.

Thanks to these advantages, AgriEuro stands out as the benchmark for the purchase of plasma cutting machines, offering solutions for every type of need. Discover the complete range now and choose the plasma cutting machine that best suits your needs.

Plasma cutting is performed using ionised gas that becomes plasma when exposed to an electric arc. This process begins with the creation of an electric arc between an electrode inside the torch and the workpiece. The arc heats the gas to extremely high temperatures, up to approximately 30,000°C, causing it to change from a gas state to a plasma state. This plasma is so hot and concentrated that it is capable of melting metal.

• Creation of the electric arc: The arc ionises the gas, generating plasma.
• Melting the metal: The plasma reaches a temperature that instantly melts the metal at the point of contact.
• Removal of molten material: A high-speed jet of gas removes the molten metal, creating a clean cut.

Plasma cutting is particularly effective for conductive materials such as steel, stainless steel, aluminium, copper and brass. It is used in industrial and craft applications to cut metals of various thicknesses with precision, speed and relatively low cost compared to other techniques such as laser cutting.

The gas used in plasma cutting plays a key role in the process, as it directly affects the quality of the cut and the speed. Different gases can be used, depending on the type of material to be cut and the desired result.

• Compressed air: The most commonly used gas. It is inexpensive and suitable for most metals, such as carbon steel and aluminium. However, it can cause slight oxidation on the edges.
• Nitrogen: This is the preferred gas for cutting stainless steel and aluminium. Being inert, it prevents oxidation, producing cleaner edges.
• Argon-hydrogen: This mixture is used for high-precision cutting on thick, resistant materials, such as stainless steel and thick aluminium.
• Oxygen: It offers superior cutting speed and optimal edge quality for carbon steel. It reduces slag build-up and improves the speed of penetration into the material.

Plasma cutting is renowned for its precision, although this can vary depending on the machine configuration, material thickness and gas used. The plasma jet produces a clean, accurate cut with a relatively smooth edge and minimal slag. This makes it ideal for industrial applications where high precision is required while maintaining a high processing speed.

• Material thickness: The greater the thickness, the lower the precision. However, with the correct gas and settings, plasma is effective on medium and thin thicknesses.
• Forward speed: The forward speed at which the plasma torch moves affects the quality of the edge. Cutting too quickly can leave slag or rough edges, while cutting too slowly can cause deformation.
• Gas control: Gas selection and adjustment, along with torch management, are essential to maintaining consistent cut quality.

Plasma cutting is particularly suitable for conductive metallic materials, exploiting the principle that only these materials can form the electric arc necessary to create plasma. It is mainly used in industrial applications for cutting sheet metal and metal parts.

• Carbon steel: One of the most common materials cut with plasma. This type of steel is widely used in various industries due to its workability.
• Stainless steel: Ideal for plasma cutting, especially with gases such as nitrogen or argon-hydrogen, which prevent edge oxidation.
• Aluminium: Aluminium can be cut with plasma, although it requires a specific configuration to prevent thermal deformation.
• Copper and brass: Non-ferrous metals that can be cut, although they require careful handling to avoid slag and uneven edges.

Plasma can cut materials with thicknesses ranging from a few millimetres to several centimetres, making it versatile for many industrial applications.

Plasma cutting occurs at extremely high temperatures, which can reach around 30,000°C. This heat is generated when a gas, such as compressed air, nitrogen or argon, is ionised by the electric arc between the electrode and the workpiece. The high temperature of the plasma allows the metal to melt quickly and be cut with precision.

• Plasma has a higher temperature than other cutting methods such as oxyacetylene flame cutting.
• The high temperature allows plasma to cut metals quickly and accurately, especially conductive materials.
• Thanks to the intense heat, plasma can cut materials of various thicknesses, from thin sheets to thicker materials, even several centimetres thick.

The extremely high temperature of plasma is one of the main characteristics that makes this method so efficient for cutting metals.

They are two different cutting methods, with different results:

• Laser-cut is used to cut different types of metal, ensuring low thermal impact and remarkable precision.
• Plasma cutting, on the other hand, is much more precise than laser cutting, ensuring flawless results with no burrs on the edges, yet it is much more economical than other types of cutting.
  Maintenance operations for plasma machines are also much simpler, whereas when using lasers, it is often necessary to rely directly on the manufacturer, which is therefore also more expensive.

The choice of a plasma cutting machine depends on several factors, including the specific needs of the user, the type of materials to be cut and the frequency of use. Here are some criteria to consider when choosing:

• Material thickness: It is important to choose a machine with a cutting capacity that matches the thickness of the materials you intend to work with. More powerful machines are needed to cut thick materials.
• Type of materials: Some machines are optimised for specific materials such as stainless steel, aluminium or carbon steel. The choice of gas to use is linked to this criterion.
• Portability: If the machine needs to be moved frequently, it is advisable to opt for a portable and lightweight version.
• Power supply: Plasma cutting machines can operate at different voltages (single-phase or three-phase). Make sure that the machine is compatible with the available power supply.
• Cutting quality: Some machines offer greater precision and cutting quality, reducing the need for post-cutting processing.

The power of the machine, ease of use and operating costs are other determining factors when choosing the right equipment.

Maintaining a plasma cutting machine is essential to ensure long life and optimal performance. Regular maintenance not only improves cut quality, but also prevents breakdowns and malfunctions.

• Torch cleaning: The plasma torch must be cleaned regularly to remove any slag and molten metal residues that could obstruct the gas flow.
• Replacing electrodes and nozzles: Electrodes and nozzles tend to wear out with use, so it is essential to check them regularly and replace them when they show signs of wear to maintain high cutting quality.
• Gas check: It is important to check that the gas flow is regular and that there are no leaks. Correct gas pressure is essential for efficient cutting.
• Checking cables and connections: Cables and connections should be inspected for signs of wear, damage or short circuits. Damaged cables can affect arc power and operational safety.
• Cleaning the air filter: If the machine uses compressed air, the filter must be cleaned regularly to ensure a clean air flow, which could compromise the quality of the cut.

Careful and regular maintenance helps prevent problems and ensures a longer life for the equipment, as well as maintaining high safety standards.