ROMB exclusive knife handmade by the master of FOMENKO KNIFES studio, buy order in Ukraine
- Brand: Майстерня ножів ручної роботи FOMENKO KNIFES
- Product Code: РОМБ ніж ручної роботи FOMENKO KNIFES купити
Загальна довжина клинка mm: | 265±05 mm |
Матеріал леза | CPM® 20CV™ powder steel (aka Duratech CV20) is a high-chromium, high-vanadium, corrosion-resistant powder steel produced by the Crucible Industries concern (USA) |
Твердість клинка (метал): | Hardness - 61-62 HRC |
Матеріал руків'я: | Bolster stainless steel, walrus tusk in polymer |
Довжина леза | 140±05 mm |
- Availability: Під замовлення
Description
SPECIFICATIONS:
The name of the knife - ROMB collector's exclusive knife handmade by the master of Fomenko Knifes studio, buy order in Ukraine
Knife type: Fixed blade
Brand: Studio of exclusive handmade knives ANDROSHCHUK KNIVES
We will make a knife to your order
Steel brand: CPM® 20CV™ powder steel (aka Duratech CV20) is a high-chromium, high-vanadium, corrosion-resistant powder steel produced by the Crucible Industries concern (USA).
Steel sheet: One-piece, through-mounting on screed and resin
Blade sharpening angle: Sharpened at 34-35 degrees
Descents: Direct
Condensation: 0.1-0.2 mm
Blade hardness: 61-62 HRC
Overall length: 265mm
Blade length: 140mm
Blade width: 30mm
Blade thickness: 4.4 mm
Grinding of the blade: Finish - longitudinal hand satin
Material of bolster (guard) and back: made of stainless steel
Handle length: 125mm
Handle thickness: 24mm
Handle material: Bolster stainless steel, micarta, ironwood, stabilized mammoth tooth, walrus tusk.
Handle color: Light brown
Impregnation of the hilt: Iak
Sleeve Cover: Yes
Lace hole (for lanyard): Yes
Temlyak - Paracord is popular among tourists, extreme sportsmen, fishermen and the military. With the help of a strong nylon cord, they fasten the equipment, fix the tents and constructions.
Scabbards: Genuine vegetable-tanned leather treated with water-repellent finish and impregnated with protective solutions, stitched with waxed thread. Manual embossing of the invoice. Free suspension
Model: ROMB collector's exclusive knife handmade by the master of FOMENKO KNIFES studio, buy order in Ukraine
Model number: 010
Country of birth: Ukraine
Craftsman: Master Oleksandr Fomenko (Fomenko Knifes), Chuhuyiv, Ukraine Studio of exclusive handmade knives FOMENKO KNIFES
Best use: Multi-purpose: hunting, fishing, cutting, slicing, etc
Knife condition: new
The price is indicated with the sheath.
A sharpened knife is not a cold weapon.
Cutting tools, saws, removable blades are made from this steel. Used in the production of medical instruments.
High anti-corrosion properties! The knives performed well in wet conditions.
Original design.
The handle is subjected to a special water-repellent treatment.
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.
Powdered steel Crucible CPM® 20CV™
CPM® 20CV™ (aka Duratech CV20) is a high chromium, high vanadium, corrosion resistant powder steel produced by Crucible Industries (USA). Recently, the alloy (and analogues, for example M390 ) are gaining popularity on serial and author's knives. And well deserved - this steel combines high cutting edge resistance (with a hardness of HRc 62-63 about one and a half times better than that of CPM S30V at 61-62) with good corrosion resistance and decent mechanics.
CPM20CV guarantees high impact strength and is able to withstand "heavy" work in extreme conditions. In addition, the steel has an aggressive cut. Of the shortcomings, it is somewhat more difficult to process; for a good result during heat treatment, cryotreatment is required.
The steel is made using the technology of amorphous metal alloys, better known among knife makers and hobbyists under the acronym CPM (Crucible Particle Metallurgy). The CPM process makes it possible to produce a very uniform, high quality steel that is characterized by superior stability, uniformity and toughness compared to steels from traditional heat production.
Powdered high speed steel was developed in Sweden in the late 60s of the last century. The powder metallurgy method makes it possible to introduce more alloying elements into the steel without reducing the strength and machinability.
Powder steel, unlike ordinary steel, is fed in molten form through a special nozzle through a stream of liquid nitrogen. Steel quickly hardens into small particles. The result is a powder with a uniform arrangement of carbides (the place of accumulation of carbides is the place where cracks originate). Carbides perform the same function in the composition of steel as cobblestones on the street: they (carbides) are harder than the steel surrounding them, and contribute to its increase in wear resistance.
The resulting powder is sieved and placed in a steel container in which a vacuum is created. Next, the contents of the container are sintered at high temperature and pressure - thus achieving material homogeneity. This process is called hot isostatic pressing. The steel is then pressure treated. The result is a high speed steel with very small carbide particles evenly distributed in the steel substrate. The resulting steel can be rolled in the traditional way, as well as serial grades of steel, resulting in its increased strength.
Differences in the wear resistance of different grades of powder steel are explained by the presence of different carbides in their composition in different proportions and with different distribution uniformity throughout the steel volume. Of two steels having approximately the same hardness, the more wear-resistant will be the one in which there are more carbides or they are harder.
Steel composition:
C 1.9% - the carbon content in the alloy is 1.9%. Carbon is the most important element in steel, it increases its strength and gives the metal good hardness.
Cr 20% - the chromium content in the alloy is 20%. Chromium is a greyish-white lustrous hard metal. Chromium affects the ability of steel to harden, gives the alloy anti-corrosion properties and increases its wear resistance. Contained in stainless steel of any brand.
Mo 1.0% - the molybdenum content in the alloy is 1.0%. Molybdenum is a silvery white metal. Molybdenum is a hard-melting element, it prevents brittleness and brittleness of the blade, giving it the necessary rigidity, making it sufficiently resistant to high temperatures.
V 4.0% - the content of vanadium in the alloy is 4.0%. Vanadium is a grayish-white lustrous metal with great hardness. It is responsible for elasticity and enhances the properties of chromium, makes the metal inert to aggressive chemical environments.
W 0.6% - the tungsten content in the alloy is 0.6%. Tungsten is a light gray metal. The most refractory metal, has a melting point tmelt = 3380 °C. It is used to create alloys with high strength. Tungsten is used as one of the main components or alloying element in the production of high speed steels.
Well, you can buy a knife made of Knife steel CPM-S90V. Composition and properties. on our website knife.net.ua or by contacting us by phone +380961711010
It is worth remembering that when using a knife for its intended purpose and with careful handling, the knife will serve you for a very, very long time.
Walrus tusk for handmade knife handle
How much is a walrus tusk today
What is the real price for a walrus tusk, the cost of which is often unclear to the average man in the street? How not to get into trouble by reacting to ads with the headings “buy a walrus tusk” or “buy a walrus tusk”, how to find out how much a walrus tusk really costs? To get reliable answers to these questions, it is worth studying the modern demand for such a rare item as walrus tusks, the price of which is significantly determined not only by size, but also by other factors. Considering these recommendations, you can count on the most advantageous offer that those who wish to buy a walrus tusk can give.
It is worth knowing that the walrus tusk, which you would like to sell, must have maximum integrity, then its value will meet your best expectations.
When selling, be guided by the current exchange rate, which significantly affects how much a walrus tusk will cost, its price is formed taking into account exchange rate fluctuations.
The competence of the experts who make the assessment is very important in this matter: not every advertisement “I will buy a walrus tusk” is actually supported by professionals, so you need to be careful and careful when choosing a buyer.
Walrus tusk products
Hunters for rarities seek to buy a walrus tusk not only in its original form, souvenirs and crafts, the material for which is a walrus tusk, are no less popular and in demand, their cost can also reach a decent amount, especially if these are antiques. The natural appeal of tusks, their particular color and structure, embodied in art objects, create a special atmosphere of luxury in any room. This makes tusk crafts a unique, status gift, relevant at all times, capable of becoming a value, even inherited. Most often there are crafts made by the inhabitants of the peoples of the North, reflecting their life and way of life:
- walrus tusk handled knives are very expensive and popular among collectors and hunters
- group and single animalistic images (bears, seals, deer);
- sculptures depicting harness dogs;
- images of people engaged in characteristic activities, such as a hunter;
- deity images.
The walrus is a very large animal with thick, wrinkled skin. Males have large skin growths on the neck and shoulders. The larger these growths, the more attractive they seem to females. The thickness of the skin reaches 10 cm, and subcutaneous fat - 15 cm. Males are much larger than females - the weight of some individuals reaches 2 tons, but usually does not exceed 800 - 1500 kg. Females weigh on average 500 - 800 kg. The length of adult walruses is 2 - 3.5 m.
Young walruses have dark brown skin with yellowish hairs. Adult animals "bald" over time, and their skin acquires a lighter shade. Old individuals become almost pink towards the end of life.
A distinctive feature of these pinnipeds is their huge tusks. Their length can reach 1 m. They help the animal when moving on a slippery surface and for breaking through ice. The tusks are elongated upper fangs pointing down. In males, they are larger and are used for battles with other males during the mating season. Males with the largest tusks dominate the herd.
The muzzle is wide, with hard thick antennae-setae on the upper lip. The eyes are small. The ear holes are hidden under the skin and do not have an exit to the outside. The tail is small. The front flippers are well developed, allowing walruses to move more or less normally on land, unlike many other pinnipeds that can only crawl on land.
There are three populations of walruses with slight external differences - the Pacific, the Atlantic and the population of the Laptev Sea.
The Pacific walrus population is the largest both in terms of numbers and size of animals. It lives on the northern coast of Eastern Siberia, on Wrangel Island, in northern Alaska. In winter, herds of walruses move south - to the Bering Sea, to Kamchatka and to the southern coast of Alaska. According to modern estimates, the population is 200 thousand animals.
The Atlantic walrus is about a third smaller than its Pacific relatives. It lives in the north of Canada, Greenland and in the western region of the Russian Arctic. It was almost completely exterminated by man as a result of uncontrolled fishing. Estimated population size - 15 - 20 thousand individuals.
The Laptev walrus population is the smallest - about 5 thousand individuals. It is isolated from other populations in the Laptev Sea and the Kara Sea.
The state of the population and the relationship with humans
In the 18-19 centuries. commercial fishing for the Atlantic walrus has led to the almost complete extinction of this animal. Currently, hunting for it is prohibited everywhere, but some indigenous peoples of the north are allowed to hunt a small number of walruses, but necessarily for their own consumption, with a ban on the sale of meat, fat or bones of the animal. For European walrus meat dishes do not seem tasty, but cooked walrus tongue is considered a delicacy.
Chukchi, Yupik peoples (Russian Far East) and Inuit (North America) consume walrus meat all winter, flippers are canned and stored until spring, tusks and bones are used to make various tools, amulets and jewelry. Waterproof thick skin - for finishing houses and boats. Modern, cheap building materials are available in the far north, and walruses no longer play as important a role in survival as they did 100 years ago, but they still remain in demand for many indigenous peoples, and walrus skin carving and beading is an important art form.
Walrus populations are difficult to determine. The fertility of animals and their mortality are not fully understood. Complicates the calculation and difficult climatic conditions of the habitat of walruses. The Pacific walrus is currently classified as "endangered" by the Endangered Species Act. The Atlantic walrus and the Laptev population are listed in the Red Data Book of Russia and are assigned to the second (decreasing in numbers) and third (rare) groups of rarity, respectively.
The effects of global warming are another area of concern for zoologists. The volume and thickness of pack ice (at least 3 meters thick and older than 2 years) is constantly decreasing, which affects the birth rate of animals and the disappearance of habitual habitats.
According to various estimates, the number of all walrus populations is 200-250 thousand heads.
- During the last ice age, walruses were distributed up to 37 degrees north latitude. This is evidenced by the found remains, dated at the age of 28 thousand years. near San Francisco in the USA. At the same latitude is the northern border of the African continent, Greece, Japan, Turkey.
- Despite their large size, walruses are sometimes attacked by killer whales.
- In a strong current, walruses cling to the edge of the ice with their tusks, holding under water. They also help animals climb high ice. This use of tusks has given walruses the generic name Odobenus rosmarus, which is Greek for "tooth walker".
- The stomach of the walrus is so large that the peoples of the north made themselves waterproof capes from it.
- In cold water, the blood vessels of the animal are greatly reduced, which makes the skin of the animal almost white.
The following information is reprinted from the Desert Ironwood Primer: Biodiversity and Uses Associated with Ancient Legume and Cactus Forests in the Sonoran Desert. Originally published in 2000 by the Arizona-Sonora Desert Museum, the Desert Ironwood Primer reports on studies by a bi-national team to conduct a region-wide assessment of Desert Ironwood habitat. This report and its recommendations were developed to help guide land use decisions impacting ironwood habitat on both sides of the U.S. / Mexico border. The study was instrumental in the recognition and designation of Ironwood Forest National Monument.
Desert ironwood, or palo fierro in Spanish, provides many wildlife and plants with habitat and resources critical to their survival.
Ironwood Blossoms, photo by Korene Cohen
While scientists do not consider ironwood endangered or threatened as a species, its populations are dwindling rapidly and recover extremely slowly after exploitation. Its ecological importance comes largely through the roles it plays for over 500 other species of plants and animals in the Sonoran Desert.
Ironwood ecology
A hardy legume tree, ironwood’s range closely matches the boundaries of the Sonoran Desert, the only place in the world where it occurs. The only species in the genus Olneya, ironwood is notable for its slow growth rates and extremely dense wood. Its wood even sinks in water. While scientists consider ironwood to be the “old growth” tree of the desert, standard tree-ring dating of its wood is difficult. Estimates show some trees to be 800 years old, and it is likely that they live even longer.
Ironwoods bloom profusely in the spring and their blossoms lend a purple hue to the landscape. The pea-type pods mature at a time of year when little else is producing fruit in the Arizona Uplands, leading to a high dependence of wildlife on its seeds. Unlike other desert trees, ironwood rarely sheds all its leaves, so that its canopy provides shade and protection from frost and extreme heat year round.
Ironwood as a Keystone Species and Nurse Plant
Ironwood functions as a habitat modifying keystone species, that is, a species that exhibits strong influences on the distribution and abundance of associated species. Ironwood generates a chain of influences on associated understory plants, affecting their dispersal, germination, establishment, and rates of growth as well as reproduction. Scientists call these ecological dynamics “nurse plant ecology”. Mesquites and palo verde also play this role, however, each tree caters to slightly different sets of plants in its “nursery”. Ironwood is the dominant nurse plant in some subregions of the Sonoran Desert.
As nurse plants, ironwoods provide safe sites for seed dispersal, seedling protection from extreme cold and freezes, and sapling protection from extreme heat and damaging radiation. They also function as prey refugia, providing herbs and cacti protection from herbivores preying on vulnerable plant seedlings. Finally, like other legumes, they alter the soil composition beneath their canopies, enriching the soil with nutrients such as nitrogen.
Ironwood, often the tallest tree in its habitat, attracts birds and other seed dispersers who roost in its branches and generate a literal “rain” of seeds and whole fruit. The mere presence of ironwood and other legume trees can increase the number of bird species in desertscrub habitat by 63%. Germination rates are higher and seedling survival rates better due to the improved soil conditions. Plant health, survival and growth are also improved by the shade and protection from frost that ironwood’s canopy offers. Thorny, low-sweeping branches keep out herbivores, promoting plant growth further. In turn, the greater diversity of plants growing in ironwood nurseries attracts a greater diversity of birds, both breeding and migratory.
The relationship between succulent cacti and ironwoods is especially well documented. Recent studies show that without the protective cover of desert legumes, the distributional ranges of saguaro, organ pipe, and senita cactus would retreat many miles, to more southern, frost-free areas. On freezing nights, the canopies of ironwood, below which the temperature may be 4º C warmer than in adjacent open areas, make the critical difference for vulnerable seedlings.
Ironwood plays a similar role in sheltering seedlings and saplings sensitive to extreme heat and radiation. Its canopy minimizes heat, damaging radiation, and water stress among plants established in its shade. When stripped of ironwood’s protective cover above them, some cacti actually suffer sunburn and die.
In addition to serving as a buffer from such abiotic stresses as soil and moisture conditions, ironwood buffers nursery plants from some biotic stresses, especially that of herbivores. Thorny nurse plants can dramatically reduce the amount of predation on seedlings by large and small herbivores such as cows, rabbits, and rodents. In some places, the high number of animals that nest, burrow or seek refuge under ironwoods reduces this effect.
Ironwood as a Cultural Resource
The many indigenous and ethnic cultures of the Sonoran Desert have long valued ironwood for its cultural, as well as ecological, resources. Traditional products and uses of ironwood include food, medicines, agricultural and household implements, and ceremonial and ritual uses. Because most of these uses utilized either renewable resources (pods, seeds, flowers) or salvaged wood from already dead trees, their impact on ancient ironwood forests was negligible.
The most well known contemporary cultural use of ironwood is by the Seri and Mexican carvers of coastal Sonora. The Seri began to carve elegant, abstract renderings of native animals in the 1960’s. They always use dried, already dead ironwood. Nearby Mexican communities quickly copied the successful forms of the Seri carvings. However, their use of machines allows them to produce carvings at a rate, which is depleting the local supply of ironwood. Attempts to protect the ironwood forests in this area have so far been unsuccessful.
The dense wood of ironwood burns extremely hot, making it the preferred fuelwood in communities in the northern Mexico, where any type of fuelwood is scarce. Mesquite charcoal production for export to the U.S. consumes even more ironwood. Ironwood grows in mixed stands with mesquite and is cut down as an illegal “by-catch” in much the same way tuna nets kill dolphins and other species, though its harvest is usually intentional rather than accidental.
Through the requests of the Seri and others, the Mexican government now requires permits for ironwood cutting, and no permits are given to cut ironwood for charcoal production. However the laws are difficult to enforce, and the incentive to cut dense, heavy ironwood is high among poor woodcutters paid by the weight of wood collected per day.
Threats to Ironwood
In Mexico, woodcutting alone causes an average 17% reduction in ironwood’s dominance in the vegetation of the areas studied. The demand for wood even sends Mexicans over the U.S. border to cut ironwood from Organ Pipe Cactus National Monument and other protected areas. Other impacts threaten ironwood habitat on both sides of the border, especially habitat fragmentation due to the rapid growth of cities such as Tucson, Yuma, Phoenix, Hermosillo and Mexicali, and the conversion of ironwood habitat to agricultural lands.
Grazing and competition by exotic species such as buffelgrass pose additional serious threats to ironwood. Buffelgrass, a popular forage grass for cattle, is highly invasive. Studies show it decreases plant species richness and diversity in native plant communities and increases the frequency of fires. Fueled by buffelgrass, these hot burning wildfires destroy ironwood and other trees and cactus. Among other threats, the population explosion in the Sonoran Desert has led to increasing recreational impacts in ironwood habitat.
Additional and fascinating information about Desert Ironwood trees can be found on the web site of the Arizona-Sonora Desert Museum as part of the Center for Sonoran Desert Studies.
Ironwood Tree, Olneya tesota
The Ironwood tree only grows in the Southwest’s Sonoran desert. It is one of the biggest and oldest plants, growing to heights of 45 feet and persisting in the desert heat for as long as 1,200 years. Many species of Sonoran wildlife depend on it for survival.
A member of the pea family, the Ironwood nurtures hundreds of species of wildlife and is ecologically vital in virtually every corner of the Sonoran desert. The Ironwood’s presence can increase the number of bird species in a habitat by as much as 63 percent, studies have shown. The heavy canopies of the Ironwoods support more than 150 species of birds by providing a shaded sanctuary in an otherwise wide-open landscape. Because of this, the physical environment under the Ironwood has lower temperatures and higher water availability. Insects gather under these trees, providing food for birds and reptiles. Cacti that grow under the Ironwood make great condos for the birds.
More than 230 plant species have been found starting their growth under an Ironwood “nurse plant.” As for other creatures, there are more than 60 reptiles and 64 mammals that use the Ironwood for forage, cover and as a place to give birth to their young. Doves, quails, coyotes and small rodents eat the plant’s seeds, which taste similar to peanuts. In one area surrounding Tucson, the Ironwood helps support at least 674 plant and animal species.
The Ironwood gets its name from its dense, strong iron-like wood. One of the heaviest woods in the world, a mere cubic foot of Ironwood can weigh up to 66 pounds. It is so heavy that if you drop a piece of ironwood in water, it will sink.
Single or multi-trunked, the Ironwood is considered an evergreen tree despite the fact that its leaves only live one year. The small bluish-green leaves grow in pairs with a pair of spines located beneath each leaf. The leaves remain on the tree until it blooms during May and June. The Ironwoods become filled with flowers that range in color from pink to purple to white. When the flowers wither, new leaves grow in and push the old ones off. The Ironwood is never really without leaves.
Brown, beanlike seedpods grow after the flowers, each containing 1 to 4 shiny brown seeds. These seeds provide high-protein nourishment for many Sonoran desert creatures as well as humans. Many Indian tribes toast and grind the seeds to make protein-rich flour, or gruel that tastes suspiciously like peanut butter.
Other parts of the plant have been used through the centuries for various things. Native Americans ground the roots into a paste to cure gum infections. They made tea from the crushed leaves to help relieve asthma, and the inner bark was used as an emetic, or agent to induce vomiting. The wood was used for fence posts, charcoal and firewood. They also made tool handles, trinkets and arrowheads out of the hard wood.
Ironwood trees grow in dry locations below 2,500 feet. They are most commonly found along dry washes.
High-quality and original steel inserts are a wonderful decoration of exclusive and unique knives of the Studio of exclusive handmade knives ANDROSHCHUK KNIVES (Ukraine), which offers to order and buy online store https://knife.net.ua
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