APPLICATION METHOD OF WEAR-RESISTANT COATINGS ON WORKING SURFACE OF PARTS OF TILLAGE MACHINES

摘要

FIELD: machine building. ^ SUBSTANCE: method involves arc surfacing of working surface along reinforcement lines with wear-resistant filler material. Density of filler material is higher than that of parent metal of the part. Compression stresses on thickness of working surface are created at cooling of the part. Surfacing of working surface along reinforcement lines is made in the form of points of wear-resistant material with layer thickness of 0.8-2.0 mm. Points of wear-resistant material are located at some distance from each other with covering of gaps of parent metal between adjacent points in the direction of working surface movement of the part. Surfacing of each next point along reinforcement lines is performed at the speed providing the covering of thermal influence zones of adjacent points with formation of hardening structure on thickness of parent metal of working surface. ^ EFFECT: higher wear resistance of earth-cutting surfaces of parts by decreasing the wear rate of parent metal in active friction zone of working surface. ^ 1 dwg