What is nichrome wire for and where to get or buy it? Nichrome wire: scope, main characteristics and manufacture (115 photos) Nichrome where to get it.
In the section on the question of the people! Where can I find nichrome wire at home? where can i get it from? from what device? Thank you. given by the author
Answer from Russians[active]
yeah
Answer from low grade[active]
old mail ru
Answer from Neurologist[expert]
He needs to make a soldering iron, and you say to buy and disassemble a soldering iron. It's normal for her.
Answer from Mickey(_) (_)Mouse #HoRRor#HISTORY#[active]
Vape is going to collective farm?))
Answer from Igor Pryamoglyadov[active]
Are you serious???? 10 years ago...
Answer from Alexander Nazarov[active]
Take apart the soldering iron.
Answer from User deleted[guru]
It is rarely used in modern electrical appliances. Can be found in some old irons, electric stoves, electric heaters. And, in general, do not rack your brains, pull on a flea market ...
Answer from Vladimir Yarovoy[active]
Heating cables contain nichrome wire inside, and tungsten in light bulbs!
Answer from User deleted[guru]
Yarovoy got ahead of me! With a slight correction - not cables, but devices
Answer from Goldobin Dorian[guru]
In heaters such as heating elements, a soldering iron, a spiral electric stove ...
However, in some cases there may be constantan or manganin, also alloys with high resistivity.
It is best to buy in the store.
Answer from Alex[guru]
Watching lope need?
In the light bulb - a thread of nichrome!
And if you're being serious, some of the shadows are wound with this wire! (look for old style heaters).
Technologies for obtaining special metal alloys in some industries have been successfully superseded by composites. This process does not stop, but there are areas that are still dominated by more traditional materials. These, in particular, include nichrome thread, which, due to the unique range of technical and physical qualities, has found application in a variety of industries.
What is nichrome?
It is an alloy formed by two base metals - nickel and chromium. Moreover, the former sometimes makes up to 80% of the structure of the alloy. Also, other metals are introduced into the composition of nichrome, including iron, aluminum, silicon, etc. The operational features of the material include high electrical resistance, heat resistance, and ductility. Individually, these qualities are not something special for traditional metals, but the nichrome thread wins precisely due to their combination in one structure. For example, the same plasticity just makes it possible to produce alloy filament fibers, then using them in furnaces, where the working environment can be about 1,200 ˚C in temperature. In addition, depending on the purpose, the alloy can be additionally alloyed, which gives it new properties or improves its basic characteristics. So, to increase the working resource, nichrome is diluted with rare earth metal components.
Characteristics of nichrome thread
There are several modifications of nichrome fibers that have their own special characteristics, but in general, the range of values \u200b\u200bis located in one narrow spectrum. For example, in terms of density, the alloy is in the corridor from 8200 to 8500 kg/m 3 . The operating temperature of most brands is within the range of 1000-1200˚C. At the same time, the size range of formats is quite extensive. The most popular nichrome thread, the diameter of which is 0.01-0.08 mm. There are also products that go beyond this standard size, but these are rather exceptions, designed for the use of material in highly specialized areas. With regard to physical resistance, on average, the thread withstands 0.65-0.7 GPa, but to maintain this level, the warnings of technologists in terms of the operational safety of the material should also be taken into account. For example, the thread cannot be left in a sulfurous atmosphere, since such environments have a detrimental effect on both the properties of nichrome and its structure.
Nichrome production
To begin with, it is worth emphasizing that the thread is only one of the nichrome release formats. It is the closest in quality to wire products. The material is produced using the technique of drawing under pressure. But before the start of the operation, the workpiece is not heated, so the technology is called cold-drawn. Etching methods can also be used - they qualitatively improve physical properties, which the nichrome thread receives at the output. Where can I get this material? Usually metallurgical plants are engaged in manufacturing. But here it is important to understand that the very procedure for creating nichrome materials is not common. This is largely due to the specifics of the application of the alloy. Nevertheless, there are many enterprises involved in metal rolling, which concentrate in their assortment the most popular standard sizes and brands of nichrome threads.
Application features
Due to their high electrical resistance, such fibers are used in heating equipment. This direction of use of the alloy is also determined by the strength and heat resistance of the structure. It is the thread that is used in small round furnace structures. In addition, this material has found its place in the field of medicine, where it is used as a means of stitching. Construction area also not without a unique alloy. So, to obtain even panel products, for example, from foam plastic or drywall, cutting with a nichrome thread along a curly line is used. Unlike traditional jigsaws, the thread allows for more accurate and accurate cutting with minimal damage to the workpiece. However, the quality of the result also depends on the execution technique. curly cutting, as well as on the conditions of the organization of the process.
How to replace nichrome thread?
Update problems are common in households heating elements in various electrical appliances. The most suitable replacement is considered to be a working spiral, which can be found in electric stoves, irons, some models of kettles, etc. But if you want to provide protection from electrochemical exposure, then you should turn to stainless steel. As practice shows, a nichrome thread usually has the same resistance index as stainless material, but loses to it in protective properties in terms of oxidization. The optimal solution such a replacement can be cutting the braid of an old hose, in which reinforcing stainless steel fibers are used.
Conclusion
The use of high-quality nichrome gives a lot of advantages to the user of a particular device or design. This material cannot always compete with analogues in terms of wear resistance, but protection against thermal shock and electrical resistance put it in a separate row already in terms of technical and operational properties. At the same time, nichrome thread should not be considered as a universal solution for the same electrical appliances. Again, some brands show their strengths most clearly as a piece of cutting equipment, and others as a stable conductor of heating infrastructure. Endowment with certain properties largely depends on the introduction of additional modifiers. Actually in pure form nichrome is almost never found today, since against the background of improving the characteristics of the target equipment, the requirements for consumables. Therefore, there is a need to improve the quality of the nichrome thread.
To do this, you need nichrome wire. The specific resistance of the wire made of nichrome grade Kh20N80 is shown in the table. For curly cutting, a thermal cutter is used from a piece of nichrome wire.
X20H80 nichrome wire is used for the manufacture of a spiral when self-rewinding the atomizer. Therefore, to get the same value, in the case of thin nichrome wire, fewer turns will be required. However, for use at increased power, it is recommended to use a thicker nichrome wire or 2 thin threads woven with a “pigtail”.
Nichrome wire is used for the manufacture of cutters, jigsaws, soldering irons, machines for cutting foam, polystyrene, etc. From them, the wire is obtained by drawing. Nichrome products are used in places requiring high-quality metal. The ends of the nichrome wire are attached to the springs, dressed on M4 screws. The screws themselves are screwed into metal racks pressed into the base of the machine.
Before screwing the screw into the rack, a groove was machined at its head so that the nichrome wire could not move arbitrarily during adjustment, but occupied the required position. To prevent sagging of the nichrome wire due to elongation when heated, it is fixed to the screws through springs. After preparing all the fasteners, you can fix the nichrome wire. Nichrome wire for appearance not much different from steel wire, but it is made of an alloy of chromium and nickel.
However, unlike steel or copper wire, nichrome wire has more resistivity and withstands, while maintaining, high mechanical strength heating temperature up to 1200˚С.
It should be noted that both AC and DC power sources are suitable for heating the nichrome wire of a foam cutting machine. Remove the plug from the network and connect the wires coming from the nichrome thread to the "Load" terminals. Insert the power cord plug into the socket and use the phase indicator to check the absence of a phase on the nichrome wire. Having dealt with the phase, you can slowly turn the LATR handle to apply voltage to the nichrome wire.
In this circuit, thanks to the isolating step-down transformer, the nichrome coil is not galvanically connected to the electrical network and is therefore safe to operate. Indeed, when cutting polystyrene on a fixture, it is not necessary to regulate the heating temperature of the nichrome wire. The temperature is selected once when setting up the machine.
Scheme of a foam cutting machine using LATR and a step-down transformer
Another, somewhat unusual scheme for the heating temperature controller of a nichrome wire, using a thyristor. If none of the above electrical circuits heating of nichrome wire for a foam cutting device cannot be realized, then I suggest non-standard scheme her warm-up. GradesNichrome wire is made from precision nichrome alloy, which belongs to alloys with high electrical resistance.
Due to the presence of a large proportion of nickel, the wire has high electrical resistance and wear resistance. To my surprise, the wire is completely clean, without oil, not like kanthal. The material was also widely used in the field of industrial production.
Nichrome tape, stripe and foil
Nichrome is a special alloy with a high concentration of chromium and nickel. GOSTs 8803-89 and 12766 apply to a wire with good electrical resistance. Chromium gives hardness and strength to the metal, and nickel gives plasticity. Due to this, the weight and dimensions of the devices and devices in which it is used are reduced. The only drawback of nickel-chromium alloy wire is its high cost, which does not affect demand in any way.
Advantages of Chrome Nickel Alloy Products
The product is sold in rolls (coils, coils) or in the form of a tape. Where to buy or get nichrome products? In the domestic sphere, it is used for cutting polystyrene foam and polystyrene. With it, you can cut the foam and make products from it with your own hands. You will need to make a rheostat to select the amount of current. To do this, you can take a spiral from an electric stove, after stretching it into a string.
Nichrome bars and circles
Such devices are manufactured in accordance with the norms and safety regulations. In shops building materials foam is sold in the form of plates different thickness and sizes. If you have a machine for cutting foam, you can always cut foam sheets of the desired thickness from a thick plate.
Calculation of the parameters of the power source for heating the wire
If you want to make a machine for cutting foam and foam rubber, many are stopped by the difficulty of organizing the supply of power to heat the nichrome string to the desired temperature. The spring was longer than required, I had to make two of it, for each side of the wire attachment.
After removing the insulation from the ends of the wires for a length of about 20 mm, copper conductors are wound on a string of nichrome wire at the place of its attachment to the spring. Then, holding the nichrome wire by the loop with pliers, the braided copper wire wraps around the free end of nichrome in the opposite direction.
So that the wires do not interfere with work, they are passed through the holes in the base and fixed on its reverse side with brackets. The most common wire brand X20H80 containing 20% chromium and 80% nickel. It is worth noting that a machine on which a wire for cutting dense foam is installed will successfully cut loose foam, only it will need to be advanced faster.
You can buy nichrome wire at any time in one of our VIPMAG.BY stores. Via homemade devices, in which nichrome wire has found application, you can not only cut the foam, but also burn it on wood. The length of the nichrome wire for the fixture is selected based on the dimensions of the foam plates intended for cutting, and does not depend on the density of the foam. A small amount of nichrome wire can be obtained from the spiral of an old electric stove.
Nichrome is the general name for alloys whose two main components are chromium and nickel. The original version of the alloy contained 20% chromium and 80% nickel. Currently, there are 10 variants of this alloy, each of which different ratio additional impurities - aluminum, titanium, silicon, molybdenum, iron or manganese.
The properties of nichrome directly depend on the proportions of the main and additional metals in the alloy. The most common nichrome product is wire, which is widely used in modern industry.
Nichrome wire: description and main characteristics
Nichrome wire is a metal cord that is produced in different lengths, thicknesses (from a fraction of a millimeter to several centimeters) and sections: round, oval, square or trapezoidal.
The most common type of section is round, since such a wire has the maximum ratio of the cross-sectional area to its perimeter. The weight of the product directly depends on the composition of its alloy and the diameter of the wire itself.
Nichrome has a rare combination of properties that make it simply an exceptional alloy, the only analogue of which, fechral, is much inferior to it in all respects.
Heat resistance this material can reach up to 1400 degrees Celsius (two-component alloy). Ultimately allowable temperature impact depends on the composition of the alloy. Also, this wire does not change its shape under the influence of heat and does not sag.
Nichrome wire has high resistance electric current, which means that this metal will require significantly less than a similar one without loss in the amount of heat generated. Therefore, devices that use nichrome wire will have smaller dimensions and weight.
The two-component alloy has no magnetic properties. They occur only when iron is added, but have very weak performance.
Nichrome is not subject to corrosion, resistant to aggressive environments, due to which it has an almost unlimited service life. Nichrome wire has good ductility and excellent moldability, while having high performance strength and hardness, not afraid of mechanical impact.
The composition of the metal alloy varies the performance of these characteristics. The photo shows the main options for winding nichrome wire.
The use of nichrome wire
The use of nichrome wire is very extensive, due to its versatility. In industry, it is used to create laboratory equipment, resistance units, resistors, rheostats, various heating devices, electric ovens and kilns for roasting and drying, welding machines. Wire with a cross section of several centimeters can be used for the manufacture of automatic welding and even ropes.
There are elements of nichrome wire in many household items - toasters, hair dryers, heating systems for windows and rear-view mirrors in cars, household heaters, vapes and even shoe insoles.
Very often, this wire is also used for home-made equipment - cutters and electric jigsaws (for wood and foam), soldering irons and devices for burning wood, home forges.
The choice of nichrome wire
How to choose the wire you need specifically for your needs? For different purposes, items with different alloy compositions, diameters and cross sections are used, so here, first of all, it is necessary to focus on the marking of the wire.
Marking H indicates that this wire is used in the manufacture of heating elements not exceeding 0.2 mm in diameter.
Marking C indicates that this product is suitable for the production of resistance elements of various mechanisms.
The TEN marking indicates the applicability of this product for the production of tubular electric heaters.
The marking also indicates the operating temperatures that are maximum for a particular alloy and its resistivity.
Operating Temperatures/Resistivity:
Х20Н80 up to 1200 degrees Celsius — Х20Н80 — 1.12 Ohm*mm/m
Х15Н60 up to 1125 degrees Celsius — Х15Н60 — 1.13 Ohm*mm/m
KhN20YUS up to 1100 degrees Celsius - KhN20YUS - 1.02 Ohm*mm/m
KhN70Yu up to 1200 degrees Celsius - KhN70Yu - 1.30 Ohm*mm/m
Above in the text are indicators for wire with a thickness of more than 3 mm. How larger diameter wire, topics more value these indicators.
Be sure to pay attention to the availability of technical documents from the manufacturer, on the basis of which this wire was made - GOST or TU. Only these documents can guarantee that you are purchasing a quality product, the characteristics of which will not be lower than those declared by the manufacturer.
Photo of nichrome wire
Our country has never lacked craftsmen". Wits and ingenuity have always been hallmarks Russian person. One of the questions that concern many modern Kulibins is where to get required amount nichrome wire? But first, let's figure out why it attracts domestic "home-made" so much?
What is this material? In fact, this is a special alloy with a high concentration of such chemical elements like nickel and chromium (hence the name of the wire). It can have a section of the most varied configuration (circle, trapezium, square, oval) and diameter (from fractions of a "mm" to several "cm").
Why is "nichrome" so valued?
Firstly, it does not rust, and corrosion, as you know, is the “sore spot” of most metals and alloys.
Secondly, the wire of this material is characterized by increased resistance to electric current. Therefore, in order to get the same amount of heat generated when included in an electric / circuit, "nichrome" (in running meters) will need several times less than, say, steel. Hence the reduction in the weight of the device (device), and the possibility of miniaturization of the design (reduction in size).
Thirdly, nichrome wire does not change its properties, does not deform, does not “burn” at high temperatures.
Fourthly, it is elastic, and it can be given any shape.
Where is this wire used? To be honest, it’s impossible to list everything, especially when it comes to production. Therefore, as an example, we note only a few options for its use in everyday life:
- machines for cutting foam plastics;
- devices for burning wood;
- heating systems for windows "auto" and rear-view mirrors;
- the simplest household heaters, better known as "goats";
- kilns (with self-manufacturing ceramics);
- for heating some types of metals (in home forges);
- homemade .
Where to get?
Here we come to this rhetorical question. Consider everything possible options.
To order . Now almost every more or less large settlement has a reference for services and goods. The operator will tell you which organization is ready to sell "nichrome" and give contact numbers. Relevant information can also be found on the Internet.
But the chances of acquisition are small. It is unlikely that someone will undertake to supply the material, if we are talking about only one and a half to two meters of wire. Organizations usually only deal with wholesale sales. But it still makes sense to call and clarify.
Buy . There are also options here.
By the way, you can buy such a wire in a regular hardware store. Spirals for electric / stoves are made from the same "nichrome".
- At the farmer's market. In every settlement there are places where people sell anything. Such "points" are called differently - "flea market", "collapse", "flea market". You just need to take the time and walk around, look around, ask around. It all depends on how much "nichrome" is needed. This is probably the most promising way to search, especially if you need a little material.
Moreover, it is not necessary to look for exactly the wire rolled into the bay. You can also buy some old equipment. For example, a laboratory rheostat, known to everyone since physics lessons. By itself, it may not be of value to us, but a certain amount of "nichrome" of a certain section is wound on it.
Conclusion
You can buy or otherwise get nichrome wire. You just need to take the initiative and try all the above methods.