How to cut metal without electricity. Gas cutting

metal, electricity, cutting

What to cut metal without electricity ?

How to cut a pipe for pipe removal or replacement? There are many ways and professional tools. autogenous torch, angle grinder, crosscut saw, etc.п. Any repair crew has a set of tools with which to cut a pipe in a matter of minutes. Even expensive tools are available to professionals. But there are situations when it is impossible or dangerous to use a cutting torch because of sparks.

When electric tools should not be used?

As an example, let’s take the situation with a fault on the gas pipeline in the area away from the city. The foreman’s team is called to the site to change the gate valve. The distance to the site is 200 km. Gathering. travel. unloading. It takes four or five hours. And the working day of the masters is not like a rubber band.

While unloading and evaluating the situation at the site, a request to cut off the gas supply in this area will be sent to the nearest substation. When the signal for a shutoff is received, the work can begin. But how.? It is difficult to plug in the power tool in the field, and even if it is possible, there is a great danger of residual gas in the pipe. For the same reason, you should not use a cutting torch.

You can, of course, request blowing of the pipe through the substation, bring an electric generator and connect a special electric pipe cutter to it. But first of all it is too much weight, additional wires, spools. А. first of all a 100% guarantee in the absence of residual gas in the pipe will not be there, the cutting disk of electric pipe cutters in the process of cutting sparks.

metal, electricity, cutting

Is there an alternative? An ideal substitute for gas and electric appliances will be a roller pipe cutter with a clamping clamp that will safely cut the pipe.

Cutting pipe with pipe cutters

There is another reason why you can’t use tools with torches. Modern pipes are coated with an anti-corrosive material both inside and outside and burning appliances damage this coating. Accurately and quickly cut the pipe without gas, electricity and danger of sparks

Polidek handheld pipe cutter. With this tool you can cut pipes with a diameter of up to 10 cm or more. The cut is smooth and even.

Pipe cutters are one of the most popular hand tools for disassembling heating systems, shortening pipes, replacing sections of piping. And pipe cutters from Polidek are reliable and of high quality, allowing you to quickly and safely cut steel, metal, copper or metal-plastic pipes.

Types of Polidek pipe cutters

The Polidek pipe cutter is simple in design and therefore easy to work with.

Thanks to the 4 rollers the cut is made in four places and it is enough to rotate the pipe cutter only 90 degrees around the axis of the pipe. To fix the product you need a minimum of space around the pipe. Robust pipe cutter frame guarantees a clean cut.

Polidek hand-operated clamp cutter can be used in trenches and pits, underwater, in explosive atmospheres (cold cuts), in places where noise is prohibited, overhead, on pipe racks, etc.д.

How to choose a pipe cutter?

It is important to purchase pipe cutting tools according to the conditions of use. In the first place, you need to look at the diameter of the pipe and choose the appropriate tool, as well as with a set of spare cutting rollers, which can be quickly changed in case of blunting without special tools.

For professional crews, it is ideal to have a set of these pipe cutters, so that, after assessing the diameter of the pipe and the circumstances of the cutting, quickly choose the best device.

Where to buy pipe cutters?

TPK TULS company offers to buy hand pipe cutters Polidek at a bargain price. To cooperate with us is beneficial for several reasons:

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For regular customers. owners of enterprises, foremen, foremen, we offer special conditions of tools acquisition. with bonuses and discounts.


Cutting is one of the most common methods of processing metal. It can be used for simple household purposes, as well as in production, where high precision workpieces are required. Of course, when in any of the conditions it is necessary to provide a part of the metal, there is a logical question of what to cut the metal with? Of course, you can always use portal metal band saws for this purpose, for example. But if you don’t have one handy, or if using the above machine seems impractical, we suggest you read this article and find your own suitable answer “What is the best way to cut metal”.

What tools to use?

Many of us are used to thinking that the only way to cut glass properly and qualitatively is with the glass cutter. But what to do, if you need to cut a piece of glass urgently, and this tool is not at hand? There is another unusual, but no less effective way to get out of this situation, even our ancestors. Such a tool is the usual scissors, which are available to any owner. Consider each method in detail.

glass cutter

The technology of cutting glass with a glass cutter is quite simple. To do this, you need to observe certain conditions and choose the right glass cutter. Today the choice of this tool is wide enough to turn the work into a pleasure.

  • The diamond glass cutter, time-tested and still the leader in its field to this day. Glass cutters with beveled cutting edge are suitable for home use. Such a tool is designed to cut glass up to ten kilometers and is suitable for any thickness of the material used. From time to time you need to sharpen this glass cutter on a special stone.
  • Roller. As the name suggests, the cutting part of this glass cutter is in the form of a roller made of durable cobalt-tungsten alloy. the number of rollers can be from one to six.
  • Oiled. this kind of tool works on the principle of a roller glass cutter, with the difference that its handle has a built-in reservoir of oil, which is fed automatically to the roller. Suitable for cutting thick glass.

For information on how to choose a good glass cutter, see

Now that you have got the glass cutter figured out, place the glass on a flat surface. Make a marking of the glass and begin work. You can use a ruler to make the task easier. It is worth taking into account the point that the line for the trimmer should be carried out with the first time, otherwise a second attempt will lead to cracking of the surface. It is necessary to cut glass with a glass cutter making equal efforts along the whole length of the line.

Regular scissors

Cutting glass with scissors like paper is not a fairy tale, but a very common reality. For this purpose, you will need the scissors themselves (sewing scissors are best) and a reservoir of water (hot is better). It is necessary to mark the glass in advance, and then, elementary physics comes into play: the scissors create a micro-crack, and the process is completed by the capillary effect. Of course, the result obtained will be different from that achieved with the glass cutter, but if necessary, this method can significantly help.

Method 4 Cut with an electric jigsaw with a metal saw.

The jigsaw can be used for cutting, including shape cutting, of thin (up to one or two millimeters thick) metal sheets, as well as small cross-section angles, rods, pipes, etc.п.

Cutting speed is low, but a fairly high precision is achieved. When cutting more or less thick sheets of iron, it is recommended that the saw and the cutting surface itself be lubricated with solidol.

What is better for cutting metal?

To begin with, let’s understand the basic technology of metal cutting, which are used in the modern cycle of production.The list of these technologies, adjusted for applicability, is as follows:

Let’s review the first three very briefly to get an idea of their benefits.

Band saw cutting

The most unassuming in terms of equipment, which can cover most metal cutting tasks. The equipment used in this technology essentially consists of an electric motor and a band saw, and as you know, the simpler the design, the more reliable it is. Of course, modern machines are equipped with electronic control systems, which in turn complicate the machine, in terms of repair and operation, but also give ample opportunities for cutting metal. It is possible to cut practically any size and type of metal on such machines, everything depends on a chosen saw and overall size of the machine with feeding mechanism.Besides the omnivorousness of such machines, one of the advantages of this technology is the ability to make an angular cut, but it is not possible to make a complex configuration on a complex curve, such is the price for universality and simplicity of the technology.

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Guillotine cutting.

Perhaps the most archaic of all existing technologies, but nevertheless still in demand. As its name suggests, it uses the good old guillotine as its operating principle. This type of equipment can be automatic, manual, with or without hydraulics. Quality of cut is good, no jagged edges, but the accuracy depends a lot on the skills of operator. And you can’t make anything but a straight cut with this type of equipment. Besides, guillotine will not cut metal of thickness exceeding 6 mm. We have a guillotine metal cutting service in our production facilities.

Gas-oxygen cutting.

The advantage of this process is its mobility, while the disadvantages are too numerous to be used in critical phases of production. If you need to open the safe or armored door, like in a Hollywood movie, or just cut the pipe or make a hole in it, not really caring about the quality of the cut, then yes, the easiest solution. a couple of bottles of gas, one of which is oxygen and a handheld gas cutter. Of course, this technology implies machine cutting, not only manual cutting, and there are many variants by the type of fuel used, but despite the seeming total power of the strongest oxidizer. oxygen, not all metals are in the list of those that can be cut by gas-oxygen technology. Cast iron, aluminum, high-alloy chromium and chromium-nickel steels and non-ferrous alloys cannot be cut with this method.

A little more detail below is discussed more modern and precise in terms of execution of the cutting technology of metal.

Plasma cutting of metal

This technology produces a much better cut than oxy-fuel cutting, and is free of most of its disadvantages. Metal is melted by an electric arc, which has a high temperature, and a stream of ionized gas beats the molten metal out of the cut.Sixty years ago, such equipment was so bulky and expensive that it was only used in engineering, but now it is quite an affordable service for cutting metal.

The plasma temperature is 15,000 to 20,000 degrees Celsius, which is both a plus and a minus. Cutting is of higher quality than oxyfuel cutting, but the edges become hard, which requires additional expense if further processing is necessary.

Plasma cutting can be used if you intend to cut aluminum or aluminum alloys, but not thicker than 120 mm. The thickness of copper to be cut is even less. 80 mm.Alloy and carbon steels can be cut up to 50 mm thick, cast iron up to 90 mm thick.

  • high precision,
  • no overlap,
  • complex cutting configuration is available,
  • no overheating of metal,
  • low cost.

And finally, the queen of fields, oh no, that’s not it.

Laser metal cutting, which we are pleased to offer you on our equipment in Noginsk.

Simply put, a laser beam is a highly dense, directional flux of photons. The very phenomenon by which it is possible to gather photons into a bunch and make the cut of the metal, is called induced emission of the medium. Atoms of some substances are capable of emitting quanta of light under the influence of other photons. The photon thus emitted, under the influence of another photon, is exactly equal to the one that produced it. As a working body, that is, the very substance in which these unique phenomena occur, can be a gas, a liquid or a solid.

Our laser installed in Noginsk can cut metal up to 20mm.

Below is a list of the advantages of laser metal cutting:

  • the most accurate cut, including the fact that the blade is not moving when cutting, and only the cutting head is moving,
  • ability to cut fragile materials,
  • no steel deformation,
  • the minimum thickness of the cutting line (not more than 0,5 mm),
  • smooth, burr-free edges,
  • micron accuracy,
  • the least amount of waste.

From the disadvantages it is worth noting not omnivorousness in relation to metals. Aluminum, high-alloy steels, and titanium are more reflective, requiring significantly more laser power for cutting, which is a limitation of using laser cutting in these metals.If you are interested in our service, look at the cost of metal cutting.

Waterjet cutting

Surprisingly, a simple high-pressure water jet can cut through many different materials from fabric and leather to polyurethane, foam rubber and plastic. And if you add a dross in the water jet, then the range of applicability of this technology greatly expands, allowing even cutting high-alloyed alloys. The essence of the technology is the effect of a mixture of water and abrasive agents, fed to the place of cutting under extremely high pressure (up to 4000 bar) and not unimportant. having a small spot of active contact. High-pressure abrasive water tears off and carries tiny particles of material away from the cutting point. A different combination of water, pressure and abrasive is used for each cutting material.

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Arc Welding Metal Cutting, Principles and Features

Metals can be cut in many different ways. Some perform as accurately as possible, others not so accurately, still others just to cut off. Cutting with electric arc welding is quite suitable for this case, but the seam will not be beautiful and the line for the trimmer of the cut is accurate, such as if you cut with plasma or laser, but still, this method is very common and popular. For cutting by electro-arc welding you need a welder and an electrode. You can cut thin metal as well as thick, but you need to adjust the amperage.

Cutting metal by electric arc welding. the principle of the process

Cutting metal by electric arc welding is not a complicated process:

  • first, we select the current mode on the machine, which we determine based on the thickness of the metal to be cut. The amperage must be 30-40% stronger than for welding. For example, cutting a sheet of 2mm., The electrode will also be 2 mm., Amperage 100A.;
  • then put the electrode to the metal and warm it up a little, gradually pressing it into the material to be cut, doing it all the time during cutting so that the cut through occurs;
  • when cutting a metal plate, it must be placed vertically so that the dross or “snot” flows down and does not stick to the product;
  • choose a special electrode for cutting, because they are different from the welding.

Cutting metal by electric arc welding is performed by a cutting electrode, which is characterized by high arc power, high heat resistance of the coating, a faster process of oxidation of liquid metal. OZR-1 electrode is suitable for cutting through holes, removing defects on the product. Mark OZR-2 is used for cutting fittings up to 40mm., for cutting, gouging, piercing holes, repairing welding defects and other similar jobs. Cutting is performed at elevated speeds in a reciprocating motion. Carbon electrode is suitable for cutting cast iron, non-ferrous metals. It can cut large thicknesses of steel up to 16mm., current strength up to 400A.

Cutting metal with electric arc welding is perfectly performed by the welding machine “RezonverHybrid”, which meets all European quality standards. It is very compact, lightweight (3,5 kg).), at 200A, consumes 30A when cutting, high performance, 98% efficiency, performance 13% higher than other machines, reliably protected against power surges and short circuits. It can be used with as little as 160V. Can easily cut any steel, regardless of its thickness, density. Ability to cut non-ferrous metals quickly enough.

  • High speed of the work performed, significant saving of time;
  • Ability to work with any metal, alloy;
  • ability to perform any shape of cut;
  • no complex equipment, no special room, no special conditions.

Cut metal with an angle grinder

angle grinder. it is an angle grinder, which is installed different grinding, abrasive, cutting circles. Special cutting disc is used for cutting metals. After cutting, the place of the cut is processed by grinding disc.

angle grinder today is probably the most productive tool for non-professional metal cutting. It allows you to cut easily enough as pipes, rods, angles, and (with some training) metal sheets. See also more about the types of working discs for bolt cutters.

What does the price of cutting sheet metal to order depend on?

If during the work will be used a large amount of raw materials, the cost of the order can be reduced by reducing the value of the price of the calculated unit (kilogram, linear meter).

Today, manufacturers use a variety of technologies for cutting sheet metal, but the main criteria for the customer are still the quality of work, production time, cost, and the availability of additional services for transportation.

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