METHOD FOR STRENGTHENING A WORKING BODY OF A DISC HARROW Russian patent published in 2021 - IPC A01B23/06 B23K9/04 B23P6/00 C23C6/00 

FIELD: agriculture.

SUBSTANCE: method for strengthening a working body of a disk harrow includes intermittent application of wear-resistant material to a working surface with a restriction of cladding zones. Wear-resistant material is applied in cladding zones from the inner and outer hemispherical sides of the working surface of the working body in the form of ellipsoid and spherical hemispheres fused into its material with the height equal to 1:4 of the diameter of spherical hemispheres. The diameter of spherical hemispheres is equal to 2:1 of the thickness of a base of the working body. The length of the minor axis of each of ellipsoid hemispheres is equal to the diameter of spherical hemispheres, and the length of the major axis of the ellipsoid hemisphere is equal to 3/2 of the diameter of spherical hemispheres. Ellipsoid hemispheres are applied to teeth of the working body with the location of the major axis in the direction of a cutting edge of teeth along two reinforcement lines made in the form of a wavy shape, with a gap between lengths of the minor axis of each of ellipsoid hemispheres equal to the diameter of spherical hemispheres. Spherical hemispheres are applied over cavities between teeth in two rows along the reinforcement line, which also has a wavy shape, with a gap equal to the diameter of spherical hemispheres. On the outer hemispherical side of the working surface of the working body, ellipsoidal and spherical hemispheres are cladded in intervals between corresponding hemispheres located on the inner hemispherical side of the working surface of the working body.

EFFECT: invention provides an increase in the wear resistance of soil-cutting parts and ensures the effect of double-sided self-sharpening of blades during their operation with the formation of their toothed shape both on the inner working surface and on the outer one, with optimal parameters that contribute to reducing resistance during tillage.

1 cl, 3 dwg