Conclusions
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1.
Thermomechanical treatment increases the working life of chisels by 20–30% in cutting quenched steel.
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2.
The optimum deformation temperature of the head of the chisel is 500° C. Cooling below 500°C decreases the ductility of the metal and leads to the formation of cracks during deformation.
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3.
The effect of thermomechanical treatment consists in the change of the fine structure of the steel and in the type and distribution of dislocations.
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Literature cited
M. M. Shteinberg, L. B. Sabun, and T. S. Shabashova, MiTOM, No. 1 (1962).
M. M. Shteinberg, L. B. Sabun, S. P. Shabashov, and M. A. Smirnov, MiTOM, No. 4 (1963).
Additional information
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 69–70, April, 1966
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Karpov, L.P. Thermomechanical treatment of boring chisels. Met Sci Heat Treat 8, 317–318 (1966). https://doi.org/10.1007/BF00663143
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DOI: https://doi.org/10.1007/BF00663143