Conclusions
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1.
The conditions were determined for successive saturation of steel KhVG with carbon and boron from powdered materials. Complex diffusion layers consisting of (Fe, M)B needles and a carburized transition layer are formed that reduce the microhardness gradient from the diffusion layer to the base metal as compared with borided steel KhVG after quenching and low-temperature tempering.
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2.
Operating tests of dies in tableting machines showed that the cyclic strength of carboborided dies is 200–250% that of borided dies. The treatment is recommended for parts of stamping and pressing machines.
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Literature cited
V. P. Glukov, Boride Coatings on Iron and Steel [in Russian], Naukova Dumka, Kiev (1970), p. 326.
G. S. Glushkov, Engineering Methods of Calculating Strength and Rigidity [in Russian], Mashinostroenie, Moscow (1972), p. 412.
Additional information
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 61–62, December, 1975.
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Alimov, Y.A., Gordienko, S.I. Successive saturation of steel KhVG with carbon and boron in powdered mixtures. Met Sci Heat Treat 17, 1062–1064 (1975). https://doi.org/10.1007/BF00664216
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DOI: https://doi.org/10.1007/BF00664216