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VK6 plate, hard alloy

VK6 plate, hard alloy

Supplier — AvekGlob company — offers at reasonable prices from the manufacturer plates made of a solid alloy grade VK6. The supplier guarantees the timely delivery of products to any address specified by the consumer.

Technical specifications

The hard alloy VK6 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 high strength, compression and hardness resistance, high electrical and thermal conductivity, at sufficiently low values of plasticity, toughness and shear resistance. The closest European analogue of the material is a hard alloy HG20.

Urgency of application

VK6 grade alloy is used in the manufacture of extra-strong tooling with pressing and sintering methods. More often used for the manufacture of cutting tools. To increase strength and rigidity, surface coatings are used. The VK6 alloy is sensitive to bending loads, and therefore is used primarily in the machining of axisymmetric billets.

Chemical composition

In accordance with the technical requirements of GOST 3882−74, the alloy VK6 has the following composition:

Tungsten carbide — 94%;

Cobalt — 6%.

Physical and mechanical properties

The melting point is 2867 ° C;

Strength limit, MPa — 1200… 1300 (lower value for alloy VK6);

Density, kg / m 3 — 14500… 15100;

Bending strength, MPa — 1200… 1300 (lower value for alloy VK6);

Compressive strength, MPa — 4350;

Modulus of elasticity, GPa — 635;

Rockwell hardness (scale A), 88… 90 (lower value for alloy VK6);

Impact strength, kJ / m 2 — 12.9.

     
             

Assortment and properties

The hard alloy VK6 is obtained by sintering the dimensions of the initial mold taking into account the shrinkage. It is made in two modifications — VK6 and VK6M (fine-grained). 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.

Supplier — AvekGlob Company — offers to purchase at affordable prices from the manufacturers plates that are made of a solid alloy grade VK6. 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.