VK15 plate, hard alloy
Supplier — AvekGlob Company — offers at reasonable prices from the manufacturer plates made of a solid alloy grade VK15. The supplier guarantees the timely delivery of products to any address specified by the consumer.
The VK15 solid alloy is a highly melting compound of solid, ceramic tungsten carbide with viscous cobalt. This material is a composite of a metal matrix in which cobalt particles are placed in a matrix of tungsten carbide. Tungsten carbide may have the formula WC or WC 2, depending on the synthesis conditions.
A characteristic feature of this alloy is the average values of strength, compressive strength and hardness for a given group of materials, for sufficiently high electrical and thermal conductivity, ductility, toughness and shear resistance. The alloy is distinguished by an average sensitivity to shear and bending stresses. It is made in two modifications — VK15 and VK15M (in the latter case, the strength and hardness are reduced, but the resistance to impact loads is increased).
Urgency of application
VK15 hard alloy is used in the manufacture of woodworking tools, drilling tools for producing wells with a shock-rotary method, for processing hard rock with the use of a pneumatic tool. It is used in machine building and metalworking for cold-forming tools of stamping machines — both solid and banded.
In accordance with the technical requirements of GOST 3882−74, the alloy VK15 has the following composition:
Tungsten carbide — 85%;
Cobalt — 15%.
Physical and mechanical properties
The melting point is 2858 ° C;
Strength limit, MPa — 1550… 1600 (lower values for alloy VK15);
Density, kg / m 3 — 13900… 14100;
Bending strength, MPa — 2400;
Compressive strength, MPa — 3800;
Modulus of elasticity, GPa — 546;
Hardness according to Rockwell (scale A), 86… 87 (lower values for alloy VK15);
Impact strength, kJ / m 2 — 13.2.
Assortment and properties
The hard alloy VK15 is obtained by sintering the dimensions of the initial mold taking into account shrinkage of the material. Available plates, discs and cylinders of various sizes. It is possible to obtain plasticized plates, previously sintered at high temperature. To obtain the final product it is necessary to use the technologies of electric spark, electric-arc or anodic-mechanical treatment. Less effective grinding with carborundum circles with the subsequent grinding of the final surface of the part with powders of boron carbide.
Supplier — AvekGlob Company — offers to buy at affordable prices from the manufacturers plates that are made of a solid alloy grade VK15. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.