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INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)

INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)

Загальна довжина клинка mm: 280±05 mm
Матеріал леза Blade - CPM 20CV - tool powder steel of the Latrobe company in the USA
Твердість клинка (метал): Hardness - 61-62 HRC
Матеріал руків'я: Bolster and backrest - stainless steel, micarta, ironwood - G10, insert - carbon, mosaic foam. Installation - solid on the screed and closed with foam.
Довжина леза 150±05 mm
  • Availability: In Stock
10,000.00 грн.
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Description

SPECIFICATIONS:

The name of the knife: INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
Knife type: Fixed blade
Brand: Studio of exclusive handmade knives FOMENKO KNIFES


Steel brand: Blade - CPM 20CV - tool powder steel of Latrobe USA (TO Rostyslav Dozlo)
Steel sheet: One-piece, through installation on screed and resin
Blade Sharpening Angle: Sharpened at 35 degrees
Descents: Direct
Reduction: 0.1-0.2 mm
Blade hardness: 61-62 HRC
Total length: 250 mm
Blade length: 125mm
Blade width: 30mm
Blade thickness: 4.2 mm
Length of the handle: 125 mm
Handle thickness: 20mm
Grinding of the blade: Finish - longitudinal hand satin
Bolster and back material: Stainless steel
Handle material: Bolster and back - stainless steel, micarta, ironwood (ironwood)
Handle color: Brown
Handle Impregnation: Yes
Handle cover: Yes
Hole for a shoelace (for a lanyard): None
Temlyak: Absent.
Scabbards: Treated ironwood (Ironwood)

Model: INVISIBLE exclusive handmade knife by the master of FOMENKO KNIFES studio, buy order in Ukraine (Steel - CPM® 20-CV™ 61-62 HRC)
Model number: 062
Country of birth: Ukraine
Craftsman: Master Oleksandr Fomenko (Fomenko Knifes), Chuhuyiv , Ukraine Studio Exclusive Handmade Knives Studio FOMENKO KNIFES
Best Use: Multipurpose: Hunting, Fishing, Carcass Splitting, Slicing, etc.
Knife Condition: New
Price is with scabbard.

 


A sharpened knife is not a cold weapon.

Our knives are very sharp, so be very careful when opening and handling them. We are not responsible for any injuries resulting from the use of our knives.
Our products are intended for legal use only by responsible buyers. We will not sell our products to anyone under the age of 18.


Availability changes regularly, upon confirmation of your order, we will inform you about the availability or when the product will be ready. The product may differ slightly from the one shown in the photo.


Steel CPM 20CV (Duratech 20CV). Composition and properties of CTS-204P


Steel grade CPM 20CV - powder steel tool production company Latrobe USA. It has high wear resistance and good corrosion properties. Hardness to HRC 60–62. Fine-grained structure. CPM 20CV steel has proven to be a good choice for high end folding and small fixed blade knives. Good performance and edge retention. According to reviews, when sharpening less than 30 degrees, staining of carbides can be observed. The burr is minimal and easily removed.

Other Names: DuraTech 20CV, 20CV, M390, CTS-204P

(CPM™) is a Crucible patented technology invented in 1970. Without going into production details, a short list of the advantages of the CPM process: small grain size, improved toughness, wear resistance, grinding, expected response to heat treatment, etc.

 

Warehouse steel CPM 20CV,%
WITH Cr Mn We IN P AND WITH V other
1.0 20.0 0.3 1.0 - - 0.3 - 4.0 0.6(W)


PROPERTIES OF STEEL ELEMENTS:

Carbon (C, Carbon):  improves edge retention and toughness; increases rigidity and wear resistance; reduces plasticity; in high values ​​reduces corrosion resistance.
Chromium (Cr, Chromium):  increases rigidity, tensile strength and density; increase resistance to corrosion (11% makes the alloy stainless).
Manganese (Mn, Manganese)  : increases hardenability, wear resistance and toughness; used as a deoxidizer and degasser to remove oxygen during metal melting; in large% it increases rigidity and brittleness.
Molybdenum (Mo, Molybdenum)  : increases stiffness, strength, annealing and density; improves machinability and corrosion resistance.
Nickel (Ni, Nickel):  gives toughness; improves corrosion resistance; reduces stiffness.
Phosphorus (P, Phosphorus):  is considered a harmful impurity. Dissolves in ferrite, due to this, strength increases, but ductility and toughness decrease with an increase in the steel's tendency to brittleness. In low alloy steels with about 0.1% carbon, phosphorus increases strength and resistance to atmospheric corrosion. It is considered a harmful impurity.
Silicon (Si, Silicon)  : increases strength; used as a deoxidizer and degasser to remove oxygen during metal melting.
Sulfur (S, Sulfur):  is generally considered to be a harmful impurity affecting ductility, toughness, weldability, corrosion properties, steel surface quality, etc. The harmful effect of sulfur reduces the presence of manganese in steel. The sulfur content in quality steels does not exceed 0.02-0.03%.
Vanadium (V, Vanadium):  increases strength, wear resistance, increases density and viscosity; increases corrosion resistance by increasing the oxide film; Vanadium carbide inclusions are very hard.
Tungsten (W, Tungsten):  adds strength, toughness and improves annealing; retains rigidity at high temperatures.
Cobalt (Co, Cobalt):  increases strength and stiffness, allows hardening at higher temperatures; enhances the effects of other elements in complex steels.
Niobium (Nb, Niobium)  : limits the growth of carbides; limits workability; creates the hardest carbides.
Nitrogen (N, Nitrogen)  : Used in place of carbon in the steel matrix (nitrogen atoms function similarly to carbon atoms but have advantages in corrosion resistance).

CARBON - KNIFE HANDLES FROM THIS PREMIUM MATERIAL


One of the most prestigious and expensive materials for knife handles, in addition to titanium and expensive woods, is a type of carbon fiber, the so-called "carbon". The material is valued for its exceptional lightness, strength and aesthetic beauty.


Carbon (from the English carbon - carbon) is a polymer material with a composite composition, made from interlaced carbon fiber filaments (carbon fibers). These threads are made using epoxy resins. Average material density from 1450 kg/m³ to 2000 kg/m³. The main difference between carbon fiber and other polymers used in the manufacture of knives is its very low weight. It is the weight combined with exceptional strength that gives carbon an advantage over other handle materials: G10 polymer, Micarta, FRN plastic, etc. At the same time, carbon fiber surpasses structural steels in terms of specific strength characteristics. The main qualities of carbon are: high tensile strength, resistance to high temperatures, aggressive environments, slight expansion when heated, high electrical conductivity. Another important feature of carbon fiber is its natural black color obtained during production, which gives it a noble and elite appearance.

 

The basis of the material is carbon fiber threads, with an average thickness of 0.005-0.010 mm in diameter. Carbon fibers are made through a complex heat treatment process. The main fiber (polyacryl, viscose) is initially oxidized in air at 250°C for 24 hours. As a result of oxidation, ladder structures are formed (polymers whose macromolecules are crosslinked in pairs by regular chemical bonds). Then carbonization takes place (the process of enriching the filaments with carbon), which takes place when the fiber is heated in nitrogen or argon at temperatures from 800 to 1500 °C. As a result of carbonization, graphite-like structures (allotropic modifications of carbon) are formed. The heat treatment process ends with graphitization (the formation of graphite in materials in which carbon is contained in a dissolved state or in the form of carbides), it takes place at a temperature of 1600-3000 ° C, in an inert environment. As a result of graphitization, the amount of carbon in the fiber is brought to 99%. In addition to conventional organic fibers, special fibers from phenolic resins, lignin, coal and petroleum pitches can be used to produce carbon filaments.

 

Carbon fabrics, in turn, are obtained by weaving threads or ribbons. In the production of these threads, carbon roving is taken as the basis - a bundle of thin continuous carbon fiber filaments with a thickness of 3 microns, formed by carbon atoms. After interlacing, they form a carbon fiber frame. The amount of carbon fiber in a thread is estimated by the number "K" - the number of thousands of elementary carbon fibers. The thinnest and most expensive carbon fiber is 1K, the most common carbon fiber is 3K, there are also carbon fiber threads with K \u003d 6, 12, 24, 48. Fabric made from threads can have a variety of weaving patterns (herringbone, matting, twill weaving, etc.). To give even greater strength to the fabric, carbon threads are laid in layers, each time changing the angle of the direction of weaving. The layers are held together with epoxy resins. This structure of carbon makes it possible to reinforce the fiber with additional elements that strengthen its structure and give it different colors and surface textures. These materials can be various threads, sequins, polymeric materials of different colors.

The main methods for manufacturing carbon plates are:

Pressing, in which the fabric is lined in a form, previously lubricated with a so-called release agent, designed to reduce the adhesion of surfaces to each other. They can be soap, wax, etc. The fabric is then impregnated with resin and the excess is removed under vacuum (vacuum molding) or under pressure. After polymerization of the resin, the product takes on a finished look.

Vacuum infusion allows you to create a laminated bag by superimposing layers of tissue on top of each other and vacuum is applied under the layers. Then, a binder is fed through the valve and, under the action of vacuum, it fills the voids and impregnates the carbon fabric.

Vacuum forming is the bonding of layers at high temperatures and then exposure to vacuum to form the volume of the product. This method is one of the cheapest.

Winding method, which consists in winding the impregnated roving on a pre-prepared form. After winding the required number of layers, the mold with the wound fabric is placed in a heating oven and polymerized.

The SMC/BMC method consists of placing the fabric in a mold heated to operating temperature. The mold closes, as a result of which, under pressure, the material spreads into the mold cavity and hardens. At the end of the cycle, the product is removed from the molds us, and its final machining and coloring is carried out.

Carbon fiber is used in various fields. In particular, in aircraft and rocket building, in the production of body parts for cars and motorcycles, household appliances and high-tech research instruments. And for about 20 years, carbon fiber has been widely used in the manufacture of knife handles in the middle and premium segments. At the same time, on folding knives, carbon can be both in the form of overlays on steel liners, and in the form of the only material of the handle, fixed with screws through the bonks.

The carbon used for the manufacture of knives, in addition to its main strength characteristics, must also have a fairly attractive appearance. It is this factor that increases its cost, complicating the production technology and requiring the highest quality raw materials. For sizing the layers, the most expensive and high-quality resins are used, and more expensive equipment, in particular chemical reactors (autoclaves). In addition, the carbon fiber is sandblasted to improve hand grip, which also increases production costs. It must also be remembered that working with carbon requires mandatory respiratory protection and special rooms with good ventilation, and this also leads to an increase in price.

The color palette and texture of carbon used on knives can be varied. Among the varieties of carbon are used:

Mosaic carbon, which can be both plain and multi-colored. Such carbon is used for radius spacers on knives with complex multi-section handles. Several dyeing technologies can be used in this carbon.


Marble carbon is a chaotic interlacing of carbon fibers, each of which reflects light differently, which makes it possible to shine from different viewing angles.

Carbon Lightning Strike ("lightning strike") with a copper thread in the form of a grid woven into carbon fabric throughout its volume. Outwardly similar to that used in the fuselages of American aircraft to protect against lightning strikes. This is a thin carbon, 3.2 mm thick twill weave. It has a deep and bright pattern.

 

Like any expensive, and at the same time difficult to manufacture material, carbon has a number of disadvantages. In the production of carbon fiber plastics, it is necessary to strictly adhere to the technological parameters, in violation of which the strength properties of products are sharply reduced. To control the quality of products, ultrasonic flaw detection, X-ray and optical holography, as well as acoustic testing can be used. Without them, the manufacturer works “by touch” and may not notice hidden defects. Another serious drawback of CFRPs is their low impact resistance. It is also necessary to remember that carbon fades over time and can significantly lose its main advantage - an attractive appearance. However, despite these shortcomings, carbon is rightfully the premium material for the best knives.


Ironwood - iron wood - handmade knives

 

iron tree

In nature, ironwood is extremely rare, therefore it occupies an honorable place in the Red Book. However, in terms of its properties, each iron tree is not inferior to the density of cast iron. Its bark can withstand gunfire, but it sinks hopelessly in water. It is worth noting that this is not a separate class of trees, but a whole group assembled from different species. It includes several dozen species of plants with unusually dense wood. They can be found on every continent. Moreover, raw materials are used both in the industrial industry and in medical practice.

ironwood product

What is special about these trees?

ironwood floor

With the naked eye, it is quite difficult to recognize the "stone" breed of a perennial plant. Especially if they are on the verge of extinction. However, they are characterized by the following features:

  • the age of such long-lived people is not less than 2 hundred years;
  • wood fiber is resistant to corrosion processes and does not deteriorate under the influence of strong acids;
  • the bark contains many tannins that protect their "hosts" from all kinds of parasites, as well as from the rot fungus;
  • the log will definitely go under water, since the density of wood is 1 t / m³, taking into account the humidity of 12%, for this reason, such breeds grow quite slowly;
  • the height of each exceeds 25 meters, and the girth of the trunk reaches more than 200 cm.

huge trunk

All these properties are necessary for an iron tree to survive in the harshest climatic conditions. Sharp temperature changes in Russia, African drought or humid European climate will not be able to harm this natural phenomenon. Such varieties of trees perfectly adapt to any adverse environment. For this, they are equipped with a considerable number of devices, starting from the unique structure of the trunk / roots and ending with the chemical composition of the bark. In this regard, they are widely used in production:

  • furniture;
  • building structures;
  • cars;
  • cosmetics;
  • decorative elements;
  • underwater equipment.

ironwood chair

lever


High-quality and original steel inserts are a wonderful decoration of exclusive and unique knives of the studio of exclusive  handmade knives FOMENKO KNIFES  (Ukraine), which offers to order and buy in the online store https://knife.net.ua or by phone. +380961711010

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Delivery and payment
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The speed of delivery to any branch of Nova Poshta in Ukraine is fixed by the operator, but usually does not exceed 1-3 calendar days.

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