Abstract
The article considers the direction of energy saving which can be solved during the introduction of surface hardening technologies. Purpose: to create a method of forming wear-resistant coatings by electric arc spraying (EDN) and to establish the impact of its technological modes on the properties of coatings, to improve performance (wear resistance) and service life of motor shafts. Object of research – the process of coating parts such as «shaft» by EDN. The study consisted of the following stages: 1) analysis of the operating conditions of parts such as «shaft» of engines, the establishment of their main defects and ways to eliminate them. Choice of recovery method and its characteristics; 2) study of the properties of the restored surfaces of shafts with coatings: porosity, adhesive and cohesive strength of the coating system-detail, durability, microhardness and wear resistance; 3) optimization of the EDN mode of coatings and development of the technological process of shaft restoration and practical recommendations. Mathematical models have been developed that describe the relationship of technological parameters of the coating process with their properties and the optimal process parameters that provide the necessary properties of coatings have been determined.
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