Conclusions
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.
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Translated from Poroshkovaya Metallurgiya, No. 7(247), pp. 75–80, July, 1983.
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Verkhoturov, V.D., Minakova, R.V., Teodorovich, O.K. et al. Tungsten carbide composites and their electroerosion resistance in electric-spark machining. Powder Metall Met Ceram 22, 579–583 (1983). https://doi.org/10.1007/BF00805658
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DOI: https://doi.org/10.1007/BF00805658