FIELD: heat treatment of parts. SUBSTANCE: proposed method includes heating part to austenization temperature and cooling it in hardening tank containing at least two immiscible hardening media of different density located in way of motion of parts; rate of motion of parts is determined preliminarily by cooling capacity of liquids and part hardening curve. Device proposed for realization of this method includes hardening tank having form of U- shaped pipe; its first half is located at angle and is provided with conveyer and second part is located vertically; first half of tank is located an angle of 10-30 deg. and second half of tank is adjustable in inclination and is provided with conveyer. EFFECT: extended functional capabilities. 3 cl, 3 dwg, 1 ex
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