| Autor: |
Verkhoturov, V. D., Minakova, R. V., Teodorovich, O. K., Flis, A. A., Tsyban', V. A. |
| Zdroj: |
Powder Metallurgy and Metal Ceramics; July 1983, Vol. 22 Issue: 7 p579-583, 5p |
| Abstrakt: |
A study was made of the effect of composition, structure, and properties of tungsten carbide pseudoalloys on processing parameters in electric-spark machining. WC-base pseudo-alloys exhibit adequate ductility under operating conditions: Their tough-to-brittle transition takes place at subzero temperatures. This markedly increases the erosion resistance of the pseudoalloys compared with pure tungsten carbide. The structure of a heterogeneous composite promotes selective evaporation of its low-melting-point constituent, which increases the rate of material removal in the electric-spark machining of refractory metals and VK20 hard metal. The introduction of an addition of low work function intensifies removal of material in electric-spark machining. |
| Databáze: |
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| Externí odkaz: |
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