SPECIFICATIONS:

The name of the knife: GOLDEN SCORPION III handmade knife by PAVL GONCHARENKA, buy order in Ukraine, steel - DI69-MP™ in laminate n690 through copper, 61 HRC
Knife type: Fixed blade
Brand: Pavlo Honcharenko's Handmade Knives Studio

Blade material: Blade made of high-carbon steel DI69-MP laminated with n690 through copper, brass and nickel 61 HRC - steel P12M3K10F3-MP (DI69-MP), tool high-speed cutting
Steel sheet: One-piece cast, through-mounting on screed and resin
Blade Sharpening Angle: 35 Degree Pointed
Descents: Straight
Taper: 0.2mm
Blade hardness: Cutting edge hardness 61 HRC
Total length: 285 mm
Blade length: 150 mm
Blade width: 33 mm
Blade thickness: 4.0 mm
Length of the handle: 135 mm
Handle thickness: 33 mm
Grinding of the blade: Finish - mosaic damask
Bolster and back material: Bronze
Handle: Bronze, copper, amber in acrylic, stabilized mammoth tooth, hybrid of stabilized maple cap and acrylic with potalium, mosaic butt tube, bronze butt. Strap made of leather cord 3 mm, beads made of hybrid
Tie: Tie made of leather cord 3mm, hybrid beads
Handle color: Golden
Impregnation of the handle: Yes
Handle cover: Yes
Hole for a shoelace (for a lanyard): Yes
Scabbards: Birch burl, wood carving, Italian vegetable tanned calf leather, hand-stitched with waxed thread, water-resistant finish, impregnated with protective solutions, stitched with waxed thread. Suspension is removable, free. Inset: Egyptian golden scorpion in acrylic..
Knife condition: New
Price: Listed together with the scabbard.

Best use: Hunting, fishing, tourism, household, carcass division, slicing
Knife condition: new
The price is indicated together with the 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, after confirming your order we will notify you of availability or when the item is ready. The product may differ slightly from the one shown in the photo.

​Steel R12M3K10F3-MP (DY69-MP) for knives - features, pros and cons

Steel R12M3K10F3-MP (DI69-MP) 
Classification High-speed tool steel
Possible designations in the literature Steel R12M3K10F3-MP; R12M3K10F3-MP; DI69; DI69-MP

Graded and shaped rolled steel B32 TU 14-1-3647-83
Purpose
Steel R12M3K10F3-MP is used: for the production of bars intended for the production of shaped cutters, disc and end mills for finishing heat-resistant steels and alloys and high-strength steels.

Mechanical properties:
sв - Limit of short-term strength, [MPa]
sТ - Yield limit, [MPa]
s0.2 - Limit of proportionality (tolerance for residual deformation - 0.2%), [MPa]
d5 - Relative elongation at break, [% ]
y - Relative shrinkage, [%]
KCU - Impact viscosity, [kJ/m2]
HB - Brinell hardness, [MPa]
HV - Vickers hardness, [MPa]
HSh - Shore hardness, [MPa]
Physical properties :

T - Temperature at which these properties are obtained, [Degree]
E - modulus of elasticity of the first kind, [MPa]
a - Coefficient of temperature (linear) expansion (range 20o - T), [1/Degree]
l - Coefficient of thermal conductivity (heat capacity of the material ), [W/(m·degree)]
r - Density of the material, [kg/m3]
C - Specific heat capacity of the material (range 20o - T), [J/(kg·degree)]
R - Specific electrical resistance, [Ohm m]

HANDLE MATERIAL - MAMMOTH'S TOOTH

Mammoth tooth is a rare raw material that is used to make decorative objects, for example, knife handles, covers for pistol grips, and jewelry. This is a unique natural element, which is rarely obtained, so its cost is quite high.

Today, the mammoth tooth, after certain processing (stabilization), is widely used by master knifemakers. Stabilization is a process of polymerization of the material under vacuum with or without the use of fat-soluble dyes, while the material is permeated with polymeric substances through.

HANDLE MATERIAL MAMMOTH TEETH

A mammoth tooth is a product of animal origin. Its exceptional feature is the fact that its source is extinct animals - mammoths. Paleontologists found that they lived on Earth about 10 thousand years ago, and their number was very large. Mammoths' teeth were not permanent and changed about four times during their lifetime. Fallen teeth, which modern scientists find during excavations, and become the basis for decorative elements, among which there are knife handles.

Due to a long stay in the soil, the material acquired a very unstable structure - the enamel became rock-hard, and the dentin, on the contrary, became loose. But modern material stabilization technologies have helped turn mammoth teeth into an excellent basis for creating luxurious knife handles. The polymer composite provides products with resistance to corrosion and moisture, and the natural base gives a unique texture and intricate pattern.

Features of the material

Mammoth molars are used to create various products. Outwardly, they look like elephant teeth, but much more have a different shade. Taking into account the historical value and rarity, the mammoth tusk is especially highly valued, since this animal became extinct long before our era. Tusks of prehistoric giants can be found not only in paleontological museums, but also on the counters of jewelry stores, they are used to decorate the interior, they are used to create various decorative elements - of course, not in their original form, but in processed form.

According to scientists, the age of the material is 10-40 thousand years. Today, how mammoths lived is not fully understood. However, the remains of these giants found by scientists, their bones, teeth, even whole carcasses allowed scientists to seriously advance in this field of research. The available data made it possible to find out what the mammals looked like, what they ate, what climatic conditions they lived in, what behavioral characteristics they had (for example, did they lead a gregarious or solitary existence).

The mammoth ate practically the same as the modern elephant: its diet consisted of plant food. In the world, the animal could feed on coniferous plants. They preferred coarse food, which they easily chewed with their strong jaws and teeth, similar to large plates. An interesting feature of the mammoth's body was that as the old tooth wore out, a new one grew, displacing the former one and taking its place. Thus, the animal could change its teeth several times during its life. All the teeth were replaced in about a ten-year interval, and the average lifespan of a mammoth was 40 years. In other words, one animal could survive an average of four complete changes of primary teeth. Thanks to this feature, people often find individual worn mammoth teeth, but do not find other traces of it.

Appearance

If you look at a mammoth tooth, you can see a non-uniform surface with ribbed edges. Bone, enamel and soft tissue alternate in this case. The material has a rather complex structure:

its basis is dentin.

The dentine layer is covered with protective enamel.

It is worth noting that the mammoth had only 4 molars and 2 tusks, which protruded outwards and served mainly for self-defense.

After special treatment, the root tooth can be used to make various jewelry products. The density of the material is very high and resembles a stone. In order to process such a product, the craftsman needs to spend a lot of effort and time.

Stabilization of raw materials

To prevent the tooth and tusk from collapsing in the process of use and making a product from it, stabilization technology is used. This is a responsible stage of processing, in which the following technologies are used:

Polycondensation.
Vacuum processing.
Application of special dyes.

All voids of the tooth are filled with a polymer substance, due to which the base acquires reliable protection against climatic influences. Such a product does not deform, cracks do not appear on it, it becomes able to withstand high temperatures. The appearance of the material also changes, becomes more attractive and unique.
 

Before the advent of this technology, mammoth teeth and bones were rarely used for making souvenirs, because they did not have sufficient strength due to the large number of cracks and delamination inside. In addition, tooth enamel has high hardness, which during processing quickly leads to the unusability of the saw. A stabilized product is much easier to subject to further processing. Mammoth tooth became especially popular in the manufacture of knife handles. It looks unusual, attractive, and if you add a dye, you can create a unique pattern that can give even such a rare thing special individuality.

Birch - description, species names and useful properties

Birch - description, species names and useful properties

Since ancient times, the white birch has been praised in literature and music, and appears in the landscapes of Ukrainian artists. Birch has become a kind of symbol of Ukraine. Other names are weeping, drooping, warty, common birch. It is called bent and hanging because of the peculiar growth of the branches, and warty because of the bulges on the young branches that resemble warts. But the paper birch is also known to everyone, you can familiarize yourself with it by following the link.

Types of birch

Of the 4 dozen varieties of birch, most of them are suitable for the chemical industry and for the creation of furniture. This is largely due to physical indicators, which indicate that the tree does not have a high density, the required hardness, and at the same time it breaks down later. However, there are such varieties of birch that are considered very valuable and can be used in various areas of the national economy.

A few words about the coast of ordinary:

hung

This species of birch reaches a maximum height of 30 meters in adulthood. It comes after her eighth birthday. At the same time, the brown trunk of the tree turns white. The wood is painted in a yellowish-white shade. It is one of the heaviest and rather dense woods.

The second name is warty birch, this species got its name because the tree is covered with resin warts. Young birch has straight branches. And in the old one, they sagged down. The shape of the leaves resembles a rhombus. The color of the birch rose in May or June. The flowers are brown. It grows in forested mountainous areas, as well as on plains throughout Ukraine.

The tree is very light-loving, its lifespan can reach 120 years. It is valued for its high calorific value. It is used in the production of charcoal, production of skis and plywood. Wood indicators deserve a mark of 5 points.

Photo of a hanging bank

dwarf

It is very similar to a large birch branchy shrub. It grows in the northern regions of Ukraine and throughout Canada. Choice of mountainous or swampy terrain. The leaves of the plant are small, dark green above, light below. Small earrings have an oval shape. The bark of an adult plant is smooth, brown in color, covered with a cortical layer.

The bush grows slowly, but is able to withstand critically low temperatures. In the North, dwarf birch leaves are used as deer feed. A trunk and branches for a bonfire. Dwarf birch is also used in landscape design.

Photo of dwarf birch

Karelian

The neighbor of the hanging birch in the forests of Karelia, Belarus, Lithuania and the northwestern regions of the European part of Ukraine is often the Karelian birch. The tree has a special cap (outgrowth) on the trunk. It is highly valued for its interesting texture.

It is a subspecies of hanging birch and grows in small groups. There are three types:

• stunted,
• medium height,
• high

The drawing of wood is the most beautiful and unique. Wood is used to create sculptural compositions, dishes and other products. Karelian birch wood is one of the most valuable and it is often a symbol of Northern Ukraine.

Photo of Karelian birch

Daur (Korean)

Black birch reaches a height of 25 meters. It grows on the lower slopes of mountains in Japan, Northern China, Korea, Mongolia and the Far East. It is believed that where there is this birch there is good soil for agriculture. The leaves are oval and dark green in color. Likes light and moisture. It is most often used for decorative purposes or for the production of coal, as well as for the manufacture of products.

What is a black birch, the video will tell:

squat

This type of birch is a shrub whose maximum height does not exceed 2.5 meters. Most often, squat birch grows in swamps in Western Scandinavia, the Far East, and Central Ukraine.

The leaves of the shrub are oval with resin warts. Kidneys are oval, pubescent. Color with the appearance of leaves in May. Leaves, buds and bark are used by humans only for medicinal purposes or for lighting solid fuel stoves.

Photo squat birch

iron

The second name is Schmidt's birch. Its wood not only does not sink in water, but also does not burn. Grows on rocky soil in Japan, China, southern Primorye. The tree grows up to twenty meters, the crown begins after 8 meters. The color of the bark ranges from dark gray to brown.

This birch is long-lived. Lives up to 400 years. Grows very slowly in the first half century. Loves light. With a small amount of it, the trunk tilts strongly. Its application in the economy is impossible, since there are no tools to process it.

Red

This is a tree whose height does not exceed 5 meters. The bark is yellowish-gray. Red birch or Yarmolenko grows only in Kazakhstan, and only in the Alma-Ata region. There is very little of it there, so it is listed in the Red Book and its logging is prohibited.

Photo of a red birch

Yerman birch (stone)

Betula ermani Cham. It grows on Sakhalin and Kamchatka, as well as in the Far East and Japan. Sometimes it is called Scandinavian. The bark of a tree, the height of which is no more than 20 meters, is brown. This birch is frost-resistant. Grows in stony soil. It is used for kindling, coal production, as well as for the manufacture of products.

In the photo is Yermanu birch

description

Deciduous trees up to 20-30 meters high, crown diameter up to 15 meters, oval uneven crown and drooping branches. The leaves are oval-triangular, narrowed to the end, serrated at the edges, turn bright yellow in autumn. The leaves of a young tree are sticky.

In young plants, the bark is brown, in adults it is white with a black base and spots. With age, the bark cracks from below. They live 120-150 years, bloom in April and May before the leaves bloom, bear fruit in September - elongated oval nuts with two wings.

The main root profusely overgrows with lateral ones that develop and become powerful enough to support the tree. Then the tap root dies.

features of wood

Birch grows quickly, adapts easily, and recovers well. Its wood is easily processed, perfectly polished.

From birch they make:

• parquet,
• skiing,
• plywood,
• products for turning production,
• furniture.

The wood does not rot, which is why birch logs were found, as well as tuesa, boxes, and boats. Each of these products is over 500 years old. The Slavs believed that birch saves from troubles and ensures well-being. Therefore, it was always planted near the house. In the modern economy, it is quite expensive to use birch, although its technical and mechanical characteristics are quite high.

care

At the beginning of spring, before the leaves appear, and at the end of it, trees are fed. For this, a special mixture is prepared: 10 g of urea, a kilogram of mullein, 15 g of ammonium nitrate per 10 liters of water. To feed 10-20-year-old plants, you need 30 liters of solution, 30-year-old and older trees - 50 liters. Watering is carried out during planting and for three to four days after it. Loosening of the soil is carried out to a depth of 3 cm in the process of weeding. Mulching of the trunk circles is carried out with peat, wood chips, peat compost in a layer of 8-12 centimeters. Dry branches are cut in the spring.

Physico-mechanical characteristics of birch

Birch is not one of the leading materials in the construction industry. Its wood is used here for semi-finished products. However, in furniture production, it has a great role. This purpose is due to various physical properties of wood.

density

The relative, conditional density of wood is a proportional ratio of parts of the same weight, one of which is completely dry, the other on the verge of hygroscopicity. Birch belongs to wood with an average density. At a relative humidity of 12%, it is equal to 0.65 g/m3. And at a humidity of 25% it is 0.71 g/m3. It is noteworthy that the density of late wood is more than 2 times higher than that of early wood.

strength of wood

Resistance to destruction from the outside is called wood density. This indicator is all the less, the higher the humidity of the tree. The strength is also affected by the external defects of the tree. The strongest wood near the black birch.

At a humidity of 12%, the indicators of the strength limit are as follows:

The listed properties are characteristic of most types of birch wood. Such properties refer wood to soft tree species.

And here are the strong varieties of birch:

• iron;
• fluffy;
• I cry.

In this, any type of birch wood has the lowest resistance to radial splitting. Similar splitting is used for the production of firewood. And the wood of any birch gets the maximum strength when it is split tangentially. In this way, durable products are produced, for example, handles of axes and chisels.

Catch indicators of strength, as well as most other physical parameters, are determined at natural humidity.

rigidity

The universally recognized scale for determining the hardness of wood of various species is laid down in the Brinell method. According to him, most varieties of birch belong to wood species of medium hardness, but quite wear-resistant. That is why birch parquet is made, which, by the way, is quite popular.

So, ordinary birch belongs to hard types of wood, its end hardness index exceeds the level of 38.6 MPa. But iron birch has a stiffness index that is higher than 82 MPa.

weight of wood

The weight of wood depends on the amount of tissue, the anatomical structure of the tree, the amount of water in it, and the strength, stiffness, calorific value, swelling capacity, degree of shrinkage.

Share indicators

Any dry birch is 3-5% lighter than wet. The specific weight of freshly cut birch during periods of constant rain can be one third heavier.

Volumetric mass of wood is responsible for quality indicators. The average bulk weight of birch wood at a moisture content of up to 15% is 0.64 g/cm3, which makes it an average wood. But the volumetric mass of freshly cut birch is 0.88 g/cm3.

thermal conductivity

The ability to conduct heat from one surface to another birch wood at the level of 630 kg/m3. This indicator was determined by the laboratory method under conditions of humidity of 12%. In a completely dry state, the thermal conductivity decreases to 600 kg/m3.

At the same time, the burning temperature near the birch is quite high. So, birch firewood when burning reaches a temperature of 1547°C and this is at the ignition point at the level of 300-350°C. The calorific value of birch wood is 4968 calories.

Thus, according to physical indicators, birch wood does not retain heat well, is prone to rotting and can be spoiled by a bug, however, as a lumber, it has high qualities, and birch firewood gives quite a lot of heat.

Humidity

Birch is very sensitive to humidity. That is why only small products are made from it, large products can change their shape under the influence of moisture. Freshly felled downy and warty birch has a maximum moisture content of 78%, and ribbed 68%.

The hygroscopicity of birch wood is quite high. It is able to absorb vapors from the air in large quantities. But it is almost always dehydrated only in special dryers.

Moisture content of 12% for all varieties of birch is achieved only by forced drying. And for additional protection of birch wood from the harmful effects of moisture, it should be impregnated with oil. Its tensile structure allows it to penetrate deep into the layers of wood, thereby creating additional protection. Ready-made products made of dry wood can be immersed in a hot oil solution for several (4-5) hours.

Chemical composition

Any wood contains C, H, O and N. The total mass of these elements is about 99%. The chemical composition of the trunk and branches is similar. Only completely dry wood contains about 50% carbon and only 0.3% nitrogen.

Yellow (American)

Yellow birch has some peculiarities, the main of which is that it is the name of two different species of this tree, one of which is found in Asia, and the other mainly in North America. This section will focus on the second.

The height of the plant is about 18-24 m, the girth of the trunk can reach 1 m. In the wild, it is found near North America, in the largest quantities in its southern parts.

Importantly! This type of birch, unlike all others, blooms at the end of spring, which will help to diversify your plot against the background of other trees.

This species is characterized by high shade tolerance, prefers river banks and swampy areas for its growth. It has a shiny bark of a golden or yellowish-gray shade, which peels very well, densely covered with white longitudinal cracks.

The root is located rather superficially, which branches widely. Young shoots have a gray color, after they reach the age of one year, white lentils form on their surface.

Standards according to GOST and special types of birch wood

Standard grading determines not only the optimal values ​​of stiffness, density, moisture content, as well as color and size, but also determines the number of possible defects and where the wood can be used.

Yes:

• GOST 862.3-86   indicates that for, for example, skis, birch of the 1st grade should be used, the thickness of which does not exceed 16 centimeters, and the length of 1.5 meters.
• GOST 9462-88   states that birch wood of the 1st and 2nd grades with a nominal minimum length of 1.3 meters should not have a wormhole, sapwood rot and a height of knots from the bark at the level of 2 centimeters can be used for the production of plywood;
• GOST 2292   indicates the norms of safe transportation of wood, in particular birch;
• GOST 9014.0   (one of 4) defines the norms of wood storage.

Quality standards establish the amount of use of substances that increase the operational characteristics of wood.

stabilized

Birch wood is polymerized or stabilized, impregnated with fillers and can be used to make handles of knives, axes, products. After exposure to chemical regents under pressure and for a certain period of time, the wood becomes stronger, stronger and more resistant to moisture.

Birch wood after such treatment acquires color better when dyed and can better imitate more expensive varieties. The process of stabilizing and preserving wood guarantees deep penetration of the necessary substance into the fibers and capillaries.

The photo shows stabilized Karelian birch wood.

moraine

Wood that has been lying in a natural reservoir for a long time (sometimes decades) is considered very valuable. During its stay in water, the tree is permeated with valuable minerals and sometimes changes its color dramatically.

In water, even such wood as birch becomes somewhat stronger. True, in order to be able to use it, say, for interior lining or in the production of furniture, it is necessary to dry them in a special chamber.

Birch is a valuable tree. In addition to the aesthetic pleasure of its appearance, it gives a person valuable branches (for brooms), fruits, flowers, earrings (for medicinal purposes) and wood, the successful use of which is possible in the national economy.

plant planting

Next, let's talk about options for planting a plant both vegetatively and generatively. Let's note which option will give the best adaptation.

seeds

Planting with seeds can be carried out immediately after harvesting, as well as in the fall. Seeds are not afraid of frost, so there is no need to additionally insulate the soil.

Before sowing, it is advisable to check all the seeds again and dry them well. Next, we choose a place according to the criteria described above and sow. You should make several furrows, 5 cm deep and up to 10 cm wide. Pour all the seed material and carefully cover the soil. The distance between the furrows should be at least 30 cm.   It should be remembered that every year the seeds lose their germination, so it is advisable to sow them in the same year when they were collected.

seedlings

Let's start with the selection of a seedling. It is ideal to buy the version that is in a container, since there is no danger of damage or drying out of the roots. Always fully inspect the condition of the seedling at the time of purchase.

A few days before planting, a hole with a diameter of 1-1.5 m is dug. The bottom soil is removed, and the top soil is mixed with humus, peat, fertile garden soil, sand and mineral fertilizers so that the roots of the seedling do not come into contact with pure humus or mineral water.

Next, planting is carried out, during which the roots of the plant are not separated from the earth lump (if there is one). If there is no coma, it is advisable to soak the roots in water for several hours. First, we line the bottom of the pit with drainage, which can be represented by small pebbles, crushed stone or expanded clay. The layer should be about 15-20 cm.

Next, we pour a little soil mixture so that a mound is formed in the center, on which we will place an earthen lump with roots. After placing the seedling in the hole, adjust it so that it grows straight up, not sideways. The remaining earthen mixture is poured, slightly compacting it.

Finally, we water the bush and mulch it, if this option is acceptable for you.

Do you know? In northern latitudes, birch pollen sometimes causes seasonal hay fever in sensitive individuals.

"Urban" variety

The hanging birch "Yungi" is a small stock tree, slow-growing, picturesque. The plant has an umbrella-shaped weeping crown. Its height is up to 5 m, and its width is up to 3-4 m. The bark has a white color, a smooth surface, where rare black cracks are visible. The shoots of the tree are flexible. Young branches hang down to the ground. This gives the crown a characteristic umbrella look.
The hanging birch "Yungi" has light green leaves. Their size is smaller than that of the species plant. The leaves have a pointed triangular shape. They are serrated at the edges. The leaves bloom in early spring. With the onset of autumn, they acquire a beautiful yellow color. In the young age of the tree, as in the species plant, the leaves are sticky and smooth. The flowers are presented in the form of yellow inflorescences - honey-bearing earrings.

The root system of the tree is superficial. It is able to lift road surfaces, shows sensitivity to planting along the trunk circle and compaction of the soil, the presence of drainage.

The development of the plant is quite intense. This type of birch is characterized by high winter hardiness, while it loves the sun. Planting is best done in spring. The tree is resistant to city conditions.

The tree has no advantages in terms of soil conditions. It can be found on any soil from neutral to slightly acidic. The plant develops normally on alkaline soils, is sensitive to salinity. The Jungi variety is used as a solitaire in small gardens and in private plots. The tree is also used to decorate the coastal line of reservoirs.

Protection against diseases and pests

Pipe-turning beetles damage young shoots and leaves. It is recommended to collect and burn the affected leaves, and dig up the trunk circles. The caterpillars of the nun silkworm and bucephalus eat the leaves abundantly, leaving only the veins. The caterpillars are shaken, and the plants are treated with insecticides. May beetles and their larvae eat the roots.

It is recommended to dig up the soil and select the larvae. Birches are prone to many fungal diseases, especially dangerous tinder fungi that destroy wood. They should be removed. Against rust, spray with fungicides, for example, copper chloride (0.4%).

Source: https://cash-flow.com.ua/bereza-%E2%80%8B%E2%80%8B-opis-nazvi-vidiv-i-korisni-vlastivosti/