Increasing the back-to-back endurance of the cog wheels made of steel 25Х13Н2

The article considers a technological procedure of the cog wheels workpieces heat treatment. It investigates the initial and finishing heat treatment of the cog wheel including the heating temperature determination, the holding time and the medium used for treatment. Based on the experiment data we have elicited the regularities by means of which the performance characteristics of the cog wheels with strict requirements for corrosion resistance can be defined. The article presents a technical regime of the finishing heat treatment consisting of two stages: 1) toughening; 2) deep drawing hardening with high-frequency current. We determine the required values of heating temperature, the holding time and the parameters of the medium used for treatment.

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