Abstract
It is impossible to improve the most critical performance properties of machine parts without methods of modifying the surface layer using such concentrated energy as laser, plasma, an electron beam or high-frequency currents. For the rational use of these methods, which are characterized by high heating rates, i.e. about 104 ... 105oC/sec a reliable mechanism for determining the processing modes that ensure the required level of quality characteristics of the hardened surface layer of machine parts, is essential. In this paper, the interrelation between the parameter values of thermal cycles, implemented in the surface layer of steel U8, and the modes of electron beam heating in the atmosphere has been determined.
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