Artistic cutting of metal with plasma: photos, sketches

Artistic metal cutting — metalworking technology using professional equipment, which makes it possible to produce decorative and shaped products of varying complexity. Curly, decorative and artistic metal cutting services in Moscow at an affordable price on professional equipment you can order from us.

Innovative technological capabilities with professional CNC equipment, as well as the rich experience of specialists, make it possible to produce products with complex decor using automated cutting, the cost of which is much lower than similar methods, and less time consuming. Using artistic metal cutting, various decorative and shaped metal products are made: metal fencing, fences, railings, handrails, shutters, balcony railings, fireplace grates, gazebo areas, etc.

This method of metal processing allows us to produce products of any complexity. If you need to design a dacha, a country house, a plot of land, etc., then we can help you develop drawings from your drawings and sketches, and take care of the entire production cycle of the structures you need.

The process of figure cutting of metal using a plasma cutting machine MAXILITE 3000

Let's take a look at the MAXILITE 3000 plasma cutting machine in its basic configuration. MAXILITE 3000 is a machine that is used for cutting metal with a thickness of 0.3 to 20 mm with good speed and high quality. The thickness of the metal that our machine can cut depends on the power of the plasma source. The machine has a modular design, so transporting it to the desired location is not difficult. So, we list the main distinctive features of the machine:

lightweight collapsible frame
portal made from a rectangular profile, also lightweight
CNC control rack has a very “grown-up” look
integrated desktop
for stable work with thin sheet metal there is a mechanical control of the burner height
optimal cost with decent characteristics

We can select a device and a plasmatron for you to suit your tasks, for example, you can reduce the size of the desktop, if necessary, and, accordingly, this will affect the cost downwards.

Please note that to operate the machine separately you will need the following equipment:

exhaust fan with an impeller of at least 200 mm;
air compressor with a capacity of at least 400 l/min;
refrigerated compressed air dryer;
main filter for class 1 air purification from solid impurities, oil and water.

In order to start working, the machine must be correctly installed, connected to power and be sure to properly organize an exhaust hood to remove smoke from particles of burning metal

This is important because a lot of smoke is generated during work, and breathing these fumes is not very good for health. The software with which the machine is controlled is available in the basic version, this is Pure Motion from the Russian company Purelogic

In the following articles we will try to analyze this software in detail, since it is still not as simple as we would like.

So, in order to cut out any detail, you will need to draw it first. You can use any software that allows you to export or save any drawing in DXF format. These can be programs such as AutoCAD, Compass, Corel Draw, etc. They, of course, are not included in the kit.

You will also install the SheetCAM program, with the help of which a special G-code will be generated, which will need to be transferred to the Pure Motion program.

It turns out that the procedure is such that first in a third-party program you draw the necessary artistic element, save it in .dxf format, import it into SheetCAM, save the generated G-code, and then import it into the Pure Motion program and it transfers it directly to cutting table with all necessary actions and coordinates.

You will also need to correctly configure the Pure Moiton program because when working with different thicknesses and metals, the speed settings, plunge height and working height of the torch will also be different. In one of the following articles we will also look at these settings in detail.

Artistic cutting of metal with plasma is performed with a plasma jet, which is used as a cutting tool. After you press the button to start the process of cutting the product, an electric arc is formed (between the metal and the electrode), the ignition of which occurs due to a pulse or short circuit; gas under pressure is supplied from the nozzle; under the influence of an electric arc, it turns into a plasma jet, the temperature of which reaches 30 thousand degrees and the speed of 1.5 thousand m/s. The cutting speed depends on the thickness of the metal, the power of the plasma source, and the complexity of the cut pattern. During the process, the drawing you drew in the program will be cut out of a sheet of metal.

It may seem that working on a CNC plasma cutting machine for figure cutting of metal is very difficult, but this is only at first, as in any other business, at first there will be mistakes, you can’t do without it, but then you will get the hang of it and get an inexhaustible source of realizing the most bold creative decisions.

Nuances of the plasma cutting process using drawings

Using technology with CNC modules has a number of advantages:

the ability to create a cut with complex geometry;
high cutting speed for any, even unusual shapes and lines;
heating the product only in the processing area, due to which the safety of work significantly increases;
clean cut, avoiding additional machining;
the products are not deformed, there are no sagging areas in the cutting area;
good repeatability of the selected image, etc.

Plasma artistic cutting is one of the indispensable operations for piece production and the production of workpieces in small batches. Such equipment allows you to create paintings based on plasma cutting designs, which become a real decoration for an office or other interior.

In addition, we are talking about one of the most effective methods for metalworking. However, this is a difficult job, and only specialists with sufficiently high qualifications can cope with it - beginners should under no circumstances be allowed to operate a plasma cutter.

During the cutting process, subtle defects may form on some parts. There is no need to be afraid of this, it is simply important to take into account the peculiarities of each base used when working with designs for plasma cutting.

Among the main indicators that need to be taken into account when processing metal using this technology, it is important to name the size of the hole. So, with a sheet thickness of 20 mm, the maximum hole size is 15 mm. Only by keeping this in mind can you prepare the most accurate drawing possible for further cutting.

Also, the thickness of the sheet affects the characteristics of the applied current. Let’s say that sheet metal with a thickness of 40 mm or more is processed using a current of 260 A. While for a sheet with a thickness of 2 mm, 30 A is enough. Also, to obtain the optimal result, it is necessary to remember the specific shape of the part in each section.

Thanks to modern technology, high precision is achieved when working with designs for plasma cutting. However, small deviations are considered acceptable if they do not go beyond accepted standards.

Sketches for plasma cutting

Both in the city and in the countryside, the tradition of decorating your own space with original things, made to order or with your own hands, is returning. Expressing your aesthetic needs in decorating your home or garden has become easier with the advent of plasma metal cutting.

Unlike hot forging, which has been used for centuries to create fences, porch canopies, weather vanes, fireplace and stove doors, the plasma cutting process requires less physical effort. Artistic cutting of metal with plasma is a faster manufacturing process, forging, and the design is more delicate and delicate.

Heating the metal to very high temperatures does not in any way affect its technical characteristics due to the short-term contact of the processed material with the flame. Due to this, no sagging is formed on the cuts, which means that the finished product will not require sanding.

The most painstaking work in the artistic cutting of metal with plasma is creating sketches for cutting. Not being an artist, you will have to use the method of enlarging the drawing you like to the required size, projecting it onto a sheet of metal using a light bulb placed in a box located behind the image on paper. This homemade enlarger is used if there is no slide projector in the house from ancient times. The size of the image is varied by moving the pattern towards the beam of light or removing it to the required distance.

Artistic metal cutting can vary in cutting technique. To create a garden sculpture, you need a clear outline of the object. It is better if the cutting takes place in long, clear lines. Also, this method of guiding a cutting arc along the contour of an element is necessary for cutting out large elements in a fence, on gates and other decorative details. Small cuts are created by short "strokes" of flame across a sheet of metal.

How to make a plasma cutter from an inverter - instructions

If desired, any owner can make such equipment with his own hands. However, in order for a homemade plasma cutter to do its job effectively, all the rules must be followed. In such a case, an inverter will be practically irreplaceable, since with the help of this device a reliable supply of current will be ensured. Due to this, there will be no interruptions in the operation of the plasma cutter, and it will also be possible to reduce energy consumption. However, it also has disadvantages: it is designed for cutting material of a smaller thickness than when using a transformer.

Selecting elements

If you decide to make a plasma cutter yourself, then you should prepare the necessary materials and equipment:

An inverter or transformer with the required power. In order not to make a mistake when purchasing this device, you need to tell the seller in the store about the thickness of the material you plan to use it for cutting. Based on this, the selection of a suitable mechanism will be made. Considering that cutting will be done manually, it is advisable to purchase an inverter, which is associated not only with its lightness, but also with its ability to reduce energy costs.

Plasma cutter or plasma torch point. When choosing it, you must rely on the same criteria as in the case of an inverter. The important point here is that direct impact equipment is designed to work with conductive materials, while an indirect impact plasma cutter is more suitable for working with products that are not capable of conducting electricity.

Compressor for air circulation

Here you should pay attention to its power, according to which it should be correlated with other selected components.

Cable-hose package. His task will be to combine all the above-described elements.

Assembly

Even before you start assembling a homemade plasma cutter, it doesn’t hurt to find out whether the components you purchased are compatible with each other. If you have never made a plasma cutting machine with your own hands before, it is advisable to seek help from more experienced craftsmen. After analyzing the power of each element needed, they will give you their recommendation. You should definitely make sure you have a protective set of clothing. You will have to use it when the time comes to test the performance of a homemade plasma cutter. If we talk about the procedure for assembling plasma cutting equipment, it includes the following steps:

At the first stage, it is necessary to prepare all the necessary elements for assembly and protective clothing.

Next, you should resolve the issue with an uninterruptible power supply.

Then you need to take an inverter or transformer, as well as a cable of suitable thickness and electrodes

Pay special attention to the last element, which should be made of beryllium, zirconium, thorium or hafnium. Such materials are considered the best choice for air plasma cutting

Hafnium may also be considered as an alternative because it will provide greater safety to the welder or craftsman who will be doing the work of separating the sheets. The listed elements must be connected to each other in order, the result should be an electric arc.

Next, a hose is connected to the compressor. It is through this that air will flow into the plasma cutting machine. The second edge must be connected to the plasma torch.

Take a small piece of aluminum and test the operation of the device you have made. Pay special attention to the security of connections.

Regardless of whether you plan to make a plasma cutter with your own hands or buy it in a store, you should first study all the models, get acquainted with the principles of their operation and design options. An important point is the type of material that is planned to be cut using this equipment in the future. You can simplify your selection task if you first watch a video that shows the operating principle of a manual plasma cutting machine and the technology for working with it.

Advantages of a manual plasma cutter

When it comes to cutting metal, many traditionally opt for an angle grinder, a metal saw, and a gas cutter. This is due to the low price of the tool, ease of operation and relatively good quality of the final product. But those who once picked up a plasma cutter are unlikely to turn to mechanical cutting again in the future. Let's look at the main advantages of a plasma cutter:

High quality cut;
No preparatory work required;
You do not risk bending the workpiece;
Ability to make products of any geometric shape;
Wide range of metals for cutting;
Cutting speed;

Below we will look at each of the points in more detail:

High quality cut. The grinder leaves a lot of burrs and in some cases it is impossible to make an even cut with the disc. Then we turn to an automatic metal saw, but the problem is not solved. A gas cutter doesn’t help, because after it you have to correct a lot of leaks. The plasma cutting machine leaves no burrs or scale. After plasma, follow-up is rarely required
No need for preparatory work. Using a grinder to cut metal with traces of paint or rust is a dubious pleasure. Small fragments injure the skin, and dust and dirt make it difficult to monitor the quality of the cut. At the same time, the operating principle of the plasma cutter is such that no preparatory work is required at all.
Minimal risk of bending the workpiece. Plasma, like mechanical threads, heats the metal. But the surface heats up only within a very small radius from the cut line. The metal remains rigid and the risk of bending the product is minimal.
No restrictions in geometric solutions. It is difficult to make a figured cutout with a grinder due to the geometry of the disc. Cutting metal with a plasma cutter is somewhat similar to working with a milling cutter. Therefore, it easily copes where curved cutting is needed. For example, in decorative metalworking.
Ability to work with almost any metal. Mechanically it is easy to cut soft metals such as copper or aluminum. A little more complicated - steel and cast iron. And it's nearly impossible to cut hard metals like titanium. Plasma can easily cope with any metals and alloys.
High speed of product processing. When cutting metal up to 10 millimeters thick, the advantages of plasma are not so obvious. But in the case of processing metals of greater thickness, the cutting speed increases up to 10 times compared to the mechanical method.

Of course, when talking about the advantages, we cannot leave the disadvantages in the shadows. There are fewer of them, but you also need to know about them.

Quality of parts

Comparing the quality of the resulting parts and based on the cost of consumables, we can come to the conclusion that laser cutting is more effective than plasma cutting for thinner sheet materials, and plasma cutting for thicker ones. It should be taken into account that operating costs for both types of cutting vary widely and are largely determined by the geometric parameters of the workpiece, the number of holes in it, and the type and thickness of the material being cut.

Options	Laser cutting	Plasma cutting
Cutting width	The cutting width is constant (0.2 - 0.375 mm)	The cutting width is not constant due to the instability of the plasma arc (0.8 - 1.5 mm)
Cutting accuracy	Typically ±0.05 mm (0.2 - 0.375 mm)	Depends on the degree of wear of consumables ±0.1 - ±0.5 mm
Taper	Less than 1°	3° — 10°
Minimum openings	In continuous mode, the diameter is approximately equal to the thickness of the material. For pulse mode, the minimum hole diameter can be one third of the material thickness.	The minimum diameter of the holes is 1.5 times the thickness of the material, but not less than 4 mm. Pronounced tendency towards ellipticity (increases with increasing material thickness).
Internal corners	High quality corners	Some corner rounding occurs and more material is removed from the bottom of the cut than from the top.
Scale	Usually absent	Usually present (small)
Burns	Invisible	Present on sharp outer edges of parts
Thermal impact	Very little	More than laser cutting
Metal cutting performance	Very high speed. For small thicknesses, usually with a noticeable decrease as the thickness increases, prolonged burning of large thicknesses.	Fast burn; very high speed at small and medium thicknesses, usually with a sharp decrease as thickness increases.

Disadvantages of plasma cutting compared to gas cutting methods:

the maximum cutting thickness is usually 80-100 mm (oxygen cutting can process cast iron and some steel up to 500 mm thick);
more expensive and complex equipment;
increased maintenance requirements;
the angle of deviation from the perpendicularity of the cut should not exceed 10-50º depending on the thickness of the part (otherwise the cut expands significantly, which leads to rapid wear of consumables);
there is practically no possibility of using two hand-held cutters connected to one device;
increased noise due to the outflow of gas from the plasmatron at transonic speeds;
harmful nitrogen-containing emissions (when using nitrogen) - to reduce, the cut product is immersed in water.

Photo.
Samples obtained as a result of plasma cutting - high resolution (top) and conventional (bottom). The top sample has a sharp top corner, while the bottom sample has a rounded top corner. Source: Welding Information Site

Types of artistic metal cutting

Shaped metal cutting is performed in one of four main ways, which are based on the following technologies:

laser;
plasma;
waterjet;
guillotine

Each technology has advantages and disadvantages. The first two are considered the most modern and therefore progressive and widely used.

Laser cutting

Metal laser cutting uses a powerful laser to process and cut the material. More often, this technology is used on an industrial scale, where the laser beam is controlled by a special computer program. As a result of a narrowly targeted effect, the material in the area being cut rapidly heats up, melts, and then evaporates or blows out. At the same time, the technology makes it possible to obtain a narrow cut with an extremely small area of influence on the surface being processed.

Laser cutting has a number of advantages:

relatively low level of costs (compared to most alternative technologies, with the exception of plasma cutting) when processing hard alloys;
the ability to work with brittle alloys that are easily deformed;
safety of technological processes (when using serviceable equipment);
absence or extremely small deformation of the material, which is achieved through highly targeted processing;
the ability to create a wide variety of complex contours;
no need for subsequent finishing or surface treatment.

Thanks to the peculiarities of the technology, using laser cutting it is possible to create designs of any complexity without requiring additional processing, since the edges and edges are immediately smooth and even.

The disadvantages of laser cutting include the inability to work with aluminum and its alloys with stainless steel. This is caused by the reflective properties of the material. It can only be processed using particularly powerful laser equipment.

Artistic laser cutting of metal is a high-quality way to create a pattern with the least amount of material and time.

Plasma cutting

an electric arc is formed (between the nozzle and the electrode or between the metal and the electrode), the ignition of which occurs due to a pulse or short circuit;
gas under pressure is supplied from the nozzle;
under the influence of an electric arc, it turns into a plasma jet, the temperature of which reaches 30 thousand degrees and the speed of 1.5 thousand m/s.

Plasma cutting of metal has the following advantages:

the ability to create drawings and figures of any complexity;
high-quality, clean and smooth cut;
ability to process all types of metals;
speed and performance of the equipment used;
no deformation of the material;
safety of technological processes (if the equipment used is in good working order).

Artistic plasma cutting can be applied to materials with rust or contamination, which does not lead to deterioration in the quality of processing. Compared to cutting using laser equipment, plasma has greater productivity and a range of materials that can be processed.

The disadvantages of this cutting method include:

a cone formed on the edge caused by a technology feature;
slightly larger cutting width compared to laser cutting.

Equipment for artistic cutting

For each technology used in processing, a significant amount of different equipment has been developed.

Laser cutting

Machines for laser metal processing are quite expensive. They are produced by many foreign companies, the most famous of which are: Trumpf (Germany), ESAB (Sweden), MultiCam (USA), Mazak (Japan), Bystronic (Switzerland), etc. Despite the fact that the technology has been in use for two decades, only relatively large industrial production companies can afford to purchase new equipment from the listed companies.

However, it must be taken into account that there is a wide supply of equipment in this category on the market that has already been used, but is in working condition. Even in this form, it almost always surpasses numerous Chinese-made analogues, which even new ones do not differ in either the quality of processing or reliability of operation.

Plasma cutting

There are two types of equipment for plasma metal processing:

inventory plasma cutter. Compact, characterized by economical energy consumption, but more demanding on voltage stability;
transformer plasma cutter. More reliable, but requiring significant energy consumption, and is larger.

Table made using artistic plasma cutting of metal

When choosing equipment for plasma cutting of metal, the following criteria are taken into account:

power;
work productivity;
the material from which the burner is made;
appearance and design of the unit.

Equipment for plasma cutting is extremely widely represented on the modern market, so anyone can easily find a model that suits them.

Automatic cutting

We create our products from sheet metal. The task is to accurately and efficiently cut out the required design on the sheet. For processing, we use metalworking machines that allow us to quickly and accurately create almost any picture. The main working element of the machine is the cutter, which can automatically move over the sheet of metal being processed. The sheet itself is fixed on the coordinate table, and the cutter moves along the X, Y axes of the coordinate table with high accuracy and a given speed. Also, the cutter can rise above the sheet of metal and fall closer to it (along the Z axis). The software sets the cutting parameters and movement of the cutter; this software can be used to produce metal products with very complex geometric patterns. The size of the finished product is limited by the dimensions of the coordinate table. The positioning accuracy of the cutter and the cutting parameters determine the quality of the finished product. When cutting, you can use different (according to the physical principles of their influence on the material) cutters. Waterjet and laser technologies are widely used. Waterjet cutters

They act on the metal with a thin stream of water supplied under pressure containing particles of an abrasive substance.

With this effect, microparticles are torn out of the metal (or other material) and washed off with water. This creates a cut. The water supply speed, the abrasive material itself and the size of its particles determine the cutting parameters.

With laser cutting

The determining factors are the radiation power and the diameter of the laser beam. The laser beam can be several microns in diameter, and in this case the accuracy can be very high.

These technologies have a number of advantages that allow them to be used to solve complex production problems. Our company uses air plasma cutting

. Let's look at its features in a little more detail.

Features of decorative metal cutting

The thinner the metal sheet and the lower its melting point, the greater the risk that by holding the cutting arc a fraction of a second longer in one place, the element may not turn out clear. To create paintings with small, closely spaced elements using plasma cutting, it is better to create on CNC plasma cutting machines.

Plasma cutting can be carried out on metals of different thicknesses. Some devices for plasma cutting provide a flame heating temperature of up to 30,000 °C, and their cutting depth reaches 20 cm. Figure cutting with such equipment parameters can be used not only to create stencil sculptures, but also for convex ones. It is more expedient and more economical to cut thick sheets of metal with oxygen rather than with a plasma torch, despite the rather high cutting speed.

Plasma arc cutting is characterized by high speed and controlled flame heating. Figure cutting is performed by a plasma jet, and not by a hard cutting object, which gives cuts without jagged edges. For some types of alloys, strong heating causes destruction of the metal structure. This is unacceptable for shape cutting. Due to the fact that when processing with a plasma cutter, a very thin section is heated and cooling occurs quickly, the structure of the metal does not change.

Main technical parameters of plasma cutting, advantages

Plasma cutting is carried out using a plasma torch. All process characteristics depend on the parameters of the gas or liquid stream

Main technical parameters that are worth paying attention to:

Speed. When cutting a metal sheet with a plasma jet, it is directed under high pressure onto the metal sheet. The principle of the whole process is to heat the metal to the point where it starts to melt, and then blow out the residue. The optimal speed for this is from 1.5 to 4 km per second.
Temperature indicators. To form plasma, the air must be heated to 5-30 thousand degrees. This temperature is obtained due to the formation of an electric arc. After reaching the required temperature parameters, the air flow is ionized and ultimately changes its properties, acquiring electrical conductivity.
There must be an electrical circuit. The work includes plasma torches with indirect and direct effects. When a direct impact device is used, it is necessary that the metal transmit electricity and be included in the general network, but for indirect impact devices, this parameter is not required.

Plasma cutting is popular because it has a number of obvious advantages:

has much higher productivity compared to simple laser cutting;
versatility – plasma cutting is suitable for a wide variety of metals;
precision and high quality of cutting - “clean” edges without overheating and with a minimum cutting width;
safety, since there are no explosive cylinders;
low level of environmental pollution.

Plasma cutting services on our own equipment

Plasma cutting is carried out by heating steel or metal with a plasma jet. The cutting tool operates due to the temperature of a compressed electric arc directed along the cutting line. For this purpose, the air is heated to 25 thousand degrees. The plasma stream helps remove molten metal at high speed. Plasma metal cutting services apply to: - Aluminum, - Carbon, - Alloy, - Stainless steel;
The cost of plasma cutting 1 linear meter. with VAT, rub.

THICKNESS , MM	BLACK METAL, RUB.	STAINLESS STEEL, RUB.	ROUND PIPE, RUB.
1	35	50	—
2	35	60	—
3	40	71	80
4	45	78	80
5	55	98	85
6	68	118	90
8	81	142	100
10	90	172	115
12	102	190	—
14	110	208	—
16	125	227	—
18	140	245	—
20	155	—	—

Advantages of plasma cutting

— Possibility of cutting any types of metals: ferrous, non-ferrous, refractory, etc.; — Ability to work with metal sheet materials up to 30 millimeters thick, which is much more than laser; — Accuracy of work even when manufacturing geometrically complex parts; — High cutting speed; — Affordable price; — High quality plasma cutting;

Price list for plasma cutting of metal

S mm	BLACK STEEL (rubles per square meter)	STAINLESS STEEL (RUB per square meter)
Up to 1 mm	20 rub.	60 rub.
Up to 2 mm	25 rub.	70 rub.
Up to 3 mm	30 rub.	75 rub.
Up to 4 mm	35 rub.	80 rub.
Up to 5 mm	40 rub.	95 rub.
Up to 6 mm	45 rub.	100 rub.
Up to 8 mm	50 rub.	110 rub.
Up to 10 mm	60 rub.	130 rub.
Up to 12 mm	70 rub.	160 rub.
Up to 14 mm	80 rub.	230 rub.
Up to 16 mm	90 rub.	240 rub.
Up to 18 mm	100 rub.	250 rub.
Up to 20 mm	110 rub.	330 rub.
Up to 22 mm	120 rub.	420 rub.
Up to 25 mm	200 rub.	480 rub.
Up to 30 mm	250 rub.	570 rub.
Up to 32 mm	300 rub.	650 rub.
Up to 38 mm	400 rub.	780 rub.
Up to 40 mm	450 rub.	850 rub.
Up to 50 mm	550 rub.	1000 rub.
Up to 58 mm	650 rub.	–
Up to 60 mm	700 rub.	–

The cost is given in rubles including VAT per linear meter;
In the absence of technical documentation for the order, the agreed price may increase by 10% or more depending on the complexity of the project;
The work is carried out using CAD/CAM systems;
These prices are not final; the exact price is calculated separately for each order depending on the complexity, volume, and nomenclature;
Delivery of finished products by our vehicles is possible;
By agreement, cutting from our materials is possible;
Minimum order value – 3,000 rubles;
Order fulfillment time is from 1 day.

One of the most modern and highly efficient methods of metal processing is plasma cutting, which is significantly superior to traditional metal processing methods. It is more accurate and efficient, making it possible to quickly and efficiently cut any type of metal, both regular and shaped.

Demand for artistic plasma cutting

The popularity of artistic metal products began to grow immediately after the advent of the art of forging. But this craft has always been associated with the remarkable strength of the master and presupposed his artistic taste. Only the combination of these qualities made it possible to create real masterpieces that adorned everyday life for many years.

Technological progress has led to the fact that the price of complex metal objects has become significantly lower. Today, specialists in this field value plasma equipment above all else, because it allows them to quickly produce an original item without large financial costs. It is important that such work is currently considered truly profitable.

Nowadays, metal art decor has entered an era of its renaissance, and such decorations for homes, landscapes and premises are becoming more and more popular. This is due, among other things, to the availability and functionality of metal processing methods used by modern specialists.

Customers with high incomes choose expensive metals such as copper, stainless steel, aluminum, etc. as materials for home decoration. With average incomes, you can order items made from sheet carbon metals of thin thickness according to designs for plasma cutting. After cutting, cleaning, and treatment with rust-preventing agents, the figured products are coated with proven paints or Kuzbasslak. The finished fence or lattice looks no worse than its analogues made of expensive metals.

It is interesting that when working with such machines, even seemingly very complex ornaments consist of closed contours. If you look closely, it becomes obvious: all fragments of the image look like a combination of straight and curved segments.

This technology is used to make not only fences, but also decor for rooms, for example, bedrooms and living rooms. Also, metal ornaments do an excellent job of decorating porches, street benches, supports for lanterns, urns, gazebos, gates and other small architectural forms.

In Russia and Europe today, original metal weather vanes of various sizes are at the height of fashion. Thanks to plasma machines, this roof design element can be produced in a short time and at an affordable price. In this case, the basis of the design for plasma cutting can be the silhouette of a plant, animal or some object.

Finished products according to drawings for plasma cutting

A huge number of bright ideas remain at the idea stage, without being implemented, only because their author does not have any skills. For example, he cannot transfer an idea into a drawing format or does not know how to cut a product according to a drawing. Our company will help you get the job done.

We will provide you with:

competent technical advice on technologies and materials;
translation of drawings into electronic form;
full production cycle from development to delivery of the finished product to the recipient.

We have all the necessary equipment for the production of metal products, so we take responsibility for solving the most complex and unusual tasks in the field of metalworking for you.

To work on an order we accept:

sketches;
blueprints;
design project.

We have all the necessary equipment for fast and high-quality cutting, ensuring high cutting accuracy, even when it comes to shaped and complex products.

Our company promptly fulfills orders from individuals and companies. The cost of the service remains low, and cost savings can be achieved through minimal energy consumption by the machine.

Advantages of artistic plasma cutting

Using this method, it is possible to create products of almost any shape and size without large financial expenses. Thanks to modern machines, high accuracy of sketch repetition is achieved when creating parts of complex configurations. It is important that items can be made according to a catalog or according to individual designs for plasma cutting.

Here are the main positive qualities of metal processing technology using plasma:

no risk of deformation of the workpiece during the cutting process;
high productivity of equipment;
minimum amount of metal waste, which is achieved through rational cutting of sheets and reducing the cutting width;
minor deviations even when creating very complex shapes and patterns;
the ability to abandon the stage of straightening and cleaning the contours of the workpiece.

This is the method that is used in the production of inexpensive barbecues, because using plasma equipment you can quickly and efficiently prepare all the parts: from the box to the shaped holes. It is worth explaining that the latter ensure the combustion of wood, allowing access to air.

Craftsmen note an increase in orders for the production of the coat of arms of Russia. The equipment allows you to quickly cut out even the smallest parts, ensuring the needs of customers and a decent profit for the performers.

Advantages and disadvantages of plasma cutting

As with other methods of cutting or cutting rolled metal, plasma cutting has both advantages and some disadvantages.

About the benefits

Plasma cutting equipment is less expensive than laser equipment;
The plasma torch easily copes with thick-walled rolled metal, which is inaccessible for laser cutting;
Plasma can be used to cut any rolled metal, as well as conductive metals: steel, cast iron, copper, brass, titanium;
The thickness of the cut made by plasma equipment depends on the type of device and tips. Devices that have a minimum cutting thickness significantly reduce the percentage of metal loss with an increase in concentrated plasma flow;
the cut does not require additional processing;
it is possible to perform complex shaped cutting;
non-metallic materials can be cut with plasma;
safety of plasma cutting equipment. This parameter is ensured by the absence of cylinders containing compressed gas. They are the cause of explosions or fires;
with automatic cutting, especially with CNC machines, user intervention is minimal, which allows rational use of the labor of maintenance personnel.

With so many advantages, there are not so many disadvantages.

Twenty centimeter thick metal is not available for plasma cutting.
It is necessary to monitor the deflection angle, which should not exceed 50.
One machine – one cutter. It is impossible to cut with two cutters at the same time.

How to choose a plasma torch?

To cut metal with a plasma cutter yourself, it is important to buy equipment. Before making a purchase, it is recommended to take into account the properties and parameters of the device

They will have a great influence on the functions of the plasma torch. The price will also vary

Before making a purchase, it is recommended to take into account the properties and parameters of the device. They will have a great influence on the functions of the plasma torch. The price will also vary.

Plasma cutting can be done by two types of plasma cutting machines:

Inventory - has a compact size, its operation requires a small amount of energy, the device is lightweight with an attractive design. At the same time, it does not turn on for long; voltage drops will negatively affect the device;
Transformer - long switching time, if the voltage jumps, the plasma cutter does not fail. The size and weight of the unit are quite large; such a plasma cutter also consumes a lot of energy.

IMPORTANT TO KNOW: Gas (oxygen) metal cutting

When choosing a plasma torch for cutting with your own hands, it is recommended to pay attention to the parameters. Such a plasma cutter will be able to maximally satisfy the needs of the master and get the job done

Such a plasma cutter will be able to maximally satisfy the needs of the master and get the job done.

Power

Depending on the characteristics of the product that needs to be cut, the power is selected. The size of the nozzle and the type of gas will also differ.

So, with a power of 60-90A, a plasma cutter can cope with metal 30 mm thick.

If you need to cut a large thickness, it is recommended to buy a plasma cutter with a power of 90-170A.

When choosing a unit, consider the current strength and voltage that it can withstand.

Time, material cutting speed

This indicator is measured in cm, which the machine can cut in 1 minute. Some plasma cutters can cut metal in 1 minute, while others can cut it in 5.

In this case, the thickness of the material will be the same.

If it is important to reduce cutting time, then it is worth considering the cutting speed. The devices differ in operating time - the duration of cutting metal without overheating

If it is indicated that the operating time is 70 percent, this means that the plasma cutter will operate for 7 minutes, after which it must cool down for 3 minutes.

If it is necessary to make long cuts, it is recommended to choose units with a long operating time.

Plasma cutter torch

It is worth assessing the material that will have to be cut. The plasma cutting torch must have the power to cut it efficiently.

It is worth considering that working conditions can be difficult and cutting can be intense.

Additional elements can be attached to the handles of such plasma cutters to support the nozzle tip at a certain distance. This makes the work much easier.

If a plasma cutter will be used to cut thin metal, then you can choose a unit whose burner receives air.

If you plan to plasma cut thick metal, you should prefer a plasma torch, the torch of which will be supplied with nitrogen.

External characteristics

When doing plasma cutting with your own hands, you most often choose portable plasma cutters, which are compact in size.

They are not difficult to operate without sufficient experience; shape cutting is available.

Video:

Stationary units are heavy and are designed for cutting thicker materials; their price will be correspondingly higher.

What metals can be cut?

Using plasma technology, almost any metal can be processed:

Cutting and cutting of sheet metal from steel, titanium, non-ferrous metals (copper, aluminum, etc.) and their alloys (including bronze, brass, etc.).
Cutting steel of different thicknesses and workpiece shapes. Processing of carbon and alloy steels of almost all grades is provided, incl. high alloy stainless steels. Plasmatrons can be used to cut strips (narrow long steel strips) and cut rolled steel.
Cutting cast iron. Plasma ensures deep cutting, which makes the method more effective compared to other technologies.
Cutting and processing of pipes of different diameters. Special pipe cutters with centralizers are used. In addition to cutting, you can process the surface of pipes, chamfer, clean welds, and process edges.
Formation and processing of holes.
Shaped cutting of metal blanks. Special equipment even allows for artistic carving and production of parts of complex shapes.

Types of cutting tinplate

Sheet metal cutting can be done in two main ways: manual and automatic. The manual method is aimed at cutting strips, blanks along the contour, grooves using scissors or hacksaws. This process is very labor-intensive and takes a lot of physical effort. When cutting, you should follow safety precautions to avoid getting splinters in your eyes.

Cutting on automatic lines is a priority and more in demand. The equipment consists of several devices:

Serving;
Unwinding;
Cutting block;
Control panel.

All operations are carried out automatically without the involvement of workers, which is very convenient. Only one operator controls. After cutting, finished blanks are stacked in packs of up to 2 tons and sent to wholesale and retail customers.

Methods for obtaining patterns for plasma cutting

On the Internet you can find almost any drawings for making objects using the method of interest to us. There are entire sites on the Internet that provide access to such images - ready-made graphic files in CAD format for laser, plasma and waterjet cutting are posted here. Most often, they can be used without additional processing, since all contours are closed and consist of arcs and segments.

For 2D cutting, DXF files are typically used as this is what most CNC sheet metal cutting machines work with. The resulting blanks can be used in the process of creating gratings, gates, fences, stairs or interior items, decor for landscape design.

A well-prepared drawing for plasma cutting, depicting the silhouette of an animal, bird or plant in dxf or dwg formats, will become an attractive accent in the interior of a bedroom, living room or other room. It can also take on the role of a design element for the facade of a house or site.

Please note that some sites provide paid access to drawings. There are also many offers on the Internet for converting graphic files in bmp, jpeg, gif formats into dxf, which is required for working with plasma equipment.