METHOD FOR RESTORING WORN-OUT BLADES OF WORKING BODIES OF TILLAGE MACHINES Russian patent published in 2022 - IPC B23P6/00 B23K11/04 C23C4/12 A01B15/00 

FIELD: agricultural engineering.

SUBSTANCE: invention relates to the restoration of worn parts by flame plating and can be used in the restoration of working bodies of tillage machines. The method includes the removal of the worn-out cutting-blade part of the working body, the manufacture of an overlay plate from a pre-prepared in width and length of the restored blade part of a blank of SHH15SG type rolled ball bearing steel with a thickness of 2.5 mm and its welding to the restored working body by contact-spot welding. Hardening is carried out by flame plating. First, the sublayer is sprayed with a heat-sensitive powder 0.05-0.15 mm thick, and then the main layer is sprayed with a wear–resistant powder alloy 2.2 mm thick, while the sublayer and the main layer are applied under the same spraying conditions: oxygen pressure 0.35-0.45 MPa, acetylene pressure 0.03-0.05 MPa, oxygen consumption 960-1100 l/h, acetylene consumption 900-1000 l/h, distance from the nozzle tip of the mouthpiece to the melting surface 160-200 mm, powder consumption 2.5-3 kg/h. Before spraying, the working body is heated to a temperature of 50-100°C.

EFFECT: invention increases the wear resistance of the restored working bodies when operating in the conditions of chestnut soils of the Volgograd region with high rates of intense abrasive wear.

1 cl, 1 ex