Abstract
The article gives the description of the developed technology of increasing wear resistance of working elements of national and foreign constructional and road machines by composite coatings, obtained on working elements cutting surfaces applying Carbo Vibro Arc Hardening method (CVAH). The technology includes the following basic operations: cleaning and fault detection of the working element, removal of the worn cutting element, compensating element production, its sharpening and welding, preparation of metal and ceramic paste for Carbo Vibro Arc Hardening method (CVAH) and its application, Carbo Vibro Arc Hardening method (CVAH) of the harden cutting surface of the working element. When hardening new working elements technological process operations connected with production and welding the compensating element is not performed. According to the carried out results the rational composition and component concentration of the paste that provides significant increase of working elements wear resistance.
Highlights
Working elements of construction and road machines while in operation are subjected to intensive impact and abrasive wear, and as a result, lose their working capacity very quickly [1,2,3,4,5,6]
The majority of famous technologies of coating deposition from the given materials differ in complexity and expensiveness of the applied equipment, and they do not provide the possibility of hardening wide nomenclature of working elements of construction and road machines of different mass and configuration
The investigations aimed at development of the formation of the composite metal and ceramic coatings on cutting surfaces of working elements, are vital today and actual and provide the solution of important economic problem to increase wear resistance of working elements of national and foreign construction and road machines
Summary
Working elements of construction and road machines (shovel teeth, drilling instrument crews, blades of autograders and bulldozers, ground threshing machines cutters, etc.,) while in operation are subjected to intensive impact and abrasive wear, and as a result, lose their working capacity very quickly [1,2,3,4,5,6] In this regard wear decrease and as a result, increase of their wear resistance and lifetime is one of the main vital scientific problems for enterprises, which produce and operate this machinery. The investigations aimed at development of the formation of the composite metal and ceramic coatings on cutting surfaces of working elements, are vital today and actual and provide the solution of important economic problem to increase wear resistance of working elements of national and foreign construction and road machines. The investigations of the theoretical and technological capabilities of the CVAH method are being continued and the questions connected with selection of rational composition of the metal and ceramic pastes for the CVAH are not examined in full
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