Tu 48-19-154-92. Carbide mixes of grades VK8-KS, VK10-KS, VK20-KS. Technical conditions.
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Technical specifications
By agreement, the mixture can be supplied with the determination of the content of cobalt, carbon, (free and common), oxygen, iron. The standards for the content of these components and impurities should be as given in the table.
| Make | Cobalt | Total Carbon | Carbon free | Fe | O |
| VK8-KS | 7.6−8.2 | 5.30−5.70 | 0.1 | 0.3 | 0.5 |
| VK10-KS | 9.5−10.5 | 5.20−5.60 | 0.1 | 0.3 | 0.5 |
| VK20-KS | 19.5−20.5 | 4.70−4.95 | 0.1 | 0.3 | 0.5 |
Physical and mechanical properties
The physical and mechanical properties of the control samples must meet the requirements specified in the table.
| Make | Strength limit, N / mm 2 (kgf / mm 2) | Density, g / cm 3 | Hardness HRA |
|---|---|---|---|
| VK8-KS | 1911 (195) | 14.6−14.8 | 88.5 |
| VK10-KS | 1862 (190) | 14.2−14.6 | 85.0 |
| VK20-KS | 2107 (215) | 13.2−13.4 | 82.0 |
1.4. The macrostructure in the fracture of the sintered samples must be homogeneous, without foreign inclusions and
1.5. Mixtures must pass through a No. 14 mesh screen.
Storage
In closed warehouses or under a canopy, in hermetically sealed cans, where according to Tu 48−19−154−92, adequate protection against mechanical and other damages is provided.
Delivery, price
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