Kurgan State University, Kurgan, Russia:

Yu. G. Gurevich, Professor of a Chair “Power Engineering and Technology of Metals”, e-mail: ygg@rambler.ru

There is developed the technology of steel saturation of non-sintered carbide frames, which makes possible the complete maintenance of the sizes of component after the saturation. During the preliminary sintering of carbide frame and its following saturation by the alloyed steel, the volume shrinkage reaches 6–10%. As it was established by the preliminary experiments, during the saturation of rough (non-sintered) frame from the titanium carbide, the shrinkage volume decreased to its complete removal. However, the mechanical strength of carbide pressings during their traditional manufacturing is rather low, which complicates their transportation and organization of saturation. Various bindings were used for the purpose of increasing of strength of pressings from the titanium carbide. At the first stages of research, glycerin was chosen as the plasticizer and binding. There is substantiated, that the optimal content of glycerin is 9–13% (mas.). With such content of glycerin, pressings sustained the insignificant dynamic loadings and did not maintain their sizes. There is substantiated that the mixture of glycerin and petrolatum, which was applied as the binding of pressing of titanium carbide, provides its steel saturation. During the saturation of carbide frame with the temperature of 1465–1480 ^oC, the dissolution of titanium from carbide in steel is practically absent.

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