METHOD OF FORMING ANTI-FRICTION COATING BY THE AUTOMATED DEVICE OF POWDER MATERIAL SUPPLY IN THE LASER PROCESSING AREA Russian patent published in 2018 - IPC B22F3/105 C23C26/00 

FIELD: technological processes.

SUBSTANCE: invention relates to the application of antifriction coatings from powder materials by means of their laser sintering on a metal surface. Method of forming an antifriction coating on the surface of a steel product comprises applying a layer of a powder composition to the surface of a steel article comprising the following components,mas%: babbit B83 with a dispersion of 5–50 mcm is the basis, copper dispersion of 0.5–1.5 mcm – 10–30, disulfide molybdenum dispersion of 1.5–2.4 mcm – up to 5, introducing the coated portion into the laser radiation zone, sintering it in a controlled environment of the argon protective gas, and performing calibration of the sintered powder composition in terms of thickness. Device for carrying out said method comprises a laser apparatus with a working table, a protective chamber for sintering a powder composition on a substrate having an inlet for supplying argon shielding gas and exhaust gas removal, wherein it comprises a top plate in the form of a steel sheet with a groove in the center for fixing the steel substrate, a polymer hopper fixed to the surface of the upper plate for dispensing the powder composition to the surface of the steel substrate, knife for leveling a dry powder composition on a substrate located at angle of 45° to the axis of symmetry of the upper plate, sealing roller for sealing said powder composition, rollers for the subsequent calibration of the thickness of the sintered powder composition and a stepping motor driven by a power of 2.5 kW installed on the laser machine worktable.

EFFECT: provides a reduction in costs for the technology of powdered antifriction material with a stable coating thickness and density, which effectively protects the surface of the product from wear.

5 cl, 10 dwg, 1 ex