| 摘要 |
FIELD: agriculture.SUBSTANCE: metal disc comprises a plastic central part (10) and an outer peripheral part (12). The central part (10) is designed in particular for mounting the disc on the chassis or analogous element. The outer peripheral part (12) is designed in particular for treatment of soil, and has a higher hardness than the central part (10). The disc additionally comprises a transition zone (14) between the central part (10) and the peripheral part (12). The transition zone (14) has a hardness gradient in the radial direction. At least in its central part the disc has a hardness gradient in thickness. The method of manufacturing the disc described above comprises the following steps. Making the workpiece by cutting from steel sheet. Making fixation zone in the center of the workpiece by sewing. If necessary, extraction of the workpiece is carried out. Implementation of heat treatment of the obtained detail by the operation of quenching in water or in a polymer. Implementation of tempering at variable temperature, for example, with use of means of induction heating.EFFECT: claimed manufacturing technique and the disc produced using it enable to increase the wear resistance of the disc and increase its life of service.10 cl, 2 dwg |
