Burnishing of the Curved Surface of the Workpiece Obtained by Selective Laser Fusion by Means of a Spring-Type Mandrel Equipped with a Steel Ball

Based on a review of scientifi c and technical literature, the prospects of using technological processes of diamond smoothing, as well as smoothing with steel and carbide balls and rollers for the quality of manufacturing parts made from castings, stampings and rolled products, i.e. from blanks obtained by traditional methods, are shown. An assumption is made about the expediency of using these methods of fi nishing and hardening processing in the manufacture of parts from blanks obtained using additive technologies. A developed and manufactured spring-type mandrel is presented, equipped with a ball made of SHX15 bearing steel and designed for smoothing fl at and curved surfaces on CNC equipment. The results of a study of the roughness of the curved surface of a sample made of a heat-resistant nickel-based alloy of the VJ159 grade obtained by selective laser fusion are presented before and after smoothing it with a mandrel with a steel ball, mentioned earlier, on a 6M13GN-1 CNC milling machine FMS-3000.