FIELD: process engineering.
SUBSTANCE: invention relates to machine building and made be used in interference joints between shaft and bush. Ledges are made on shaft with hardness exceeding that of bush material. Said ledges are produced by electric-spark processing on making hardening layers made up of rectangular sectors with spacing of 1…3 of sector width. Electric-spark processing is performed by graphite electrode in air in direct contact between electrode and shaft and continuous transfer along shaft axis. Shaft is assembled with bush to allow shaft sectors to be pressed in bush mating surface.
EFFECT: longer life and higher reliability of joint, easier production.
2 cl, 3 dwg, 5 ex
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