Details of the hammer during operation are subject to wear, which leads to a decrease in their service life. In accordance with the literature data in the practice of engineering uses many methods of hardening, which do not give a significant effect. Therefore, the application of new methods of surface hardening has become topical. These methods include ion-plasma chromium plating. On the basis of experimental studies, the effect of ion-plasma chromium plating on the wear resistance and

more »

... al properties of hydraulic hammer parts has been established, structural changes in the material have been analyzed. Ion-plasma chromizing of the parts promotes the increase of their wear resistance in 1.75 times as compared to those which are not strengthened. The technology of ionplasma chromizing secures the running of the strengthened parts without breaking off and chipping. The zones of structural changes are marked on the sections of parts damages, which are typical for the effects of the second hardening.