Creation of new technological methods for surface engineering based on broaching

Abstract

The article is devoted to the creation of new processing technologies through the use of drawing. It is determined that the most effective processes of surface engineering of machine parts are hybrid technologies. The advantages of such technologies due to obtaining a new effect from the impact on the part by two or more dissimilar processes belonging to one or different groups of surface engineering methods are noted. It is proved that the use of hybrid technologies on the basis of stretching allows to combine the advantages of different methods, first of all cold plastic deformation methods, in combination with others. The use of deforming drawing provides in the surface layer favorable for the part of the compressive residual stresses, increase the wear resistance of the surface, as well as the strength of the part. The results of the research allowed to classify the deforming drawing as a class of surface engineering methods. On the example of processing of cylinder liners of internal combustion engines the combined technology containing operations of deforming drawing and finishing antifrictional non-abrasive processing is developed. It is shown that the use of deforming drawing has significantly improved the quality of antifriction coating. The use of deforming drawing to the component of the hybrid method with the subsequent pulsed nitriding is considered.It is established that when nitriding cutting tool products, hybrid process modes should be set in order to create the most effective nitride zone. In the case of processing of road vehicle parts, special attention should be paid to obtaining a diffusion layer. The efficiency of the offered technologies on the basis of stretching is established. Determining the prospects for further use of deforming drawing as an integral part of hybrid technologies