Підвищення експлуатаційних властивостей поліграфічного обладнання

Abstract

A literature analysis and patent search of technological processes for the creation of fully and partially regular micro-relief of various types and types using surface plastic deformation are carried out. Based on the inspection, the necessity of creating a combined micro-relief on flat surfaces with the task of improving the quality parameters and operational characteristics of the guides was determined. A two-stage technological process for creating micro-relief guides on flat guides of printing equipment has been developed. At the first stage of the technological process, we create a micro-relief in the form of a circle. At the second stage of the technological process, we change the modes of surface plastic deformation and, on a flat surface of the guides, a micro-rectilinear guide that passes through micro-relief circles.Experimental studies were carried out on samples of steel and cast iron. The wear resistance of samples with micro-guides was studied on a special bench. The wear of the samples by weight was estimated by the method of weight loss using laboratory analytical weights. Linear wear was indicated by measuring the depth of the micro-relief using a profilometer. The results of experimental studies have shown the optimal in terms of wear resistance area of micro-guides made of metal.The developed stage-by-stage technology makes it possible to increase the wear resistance of guides by 1.3–1.4 times in comparison with flat polished surfaces, as well as improving the geometric and physic-mechanical parameters of the surface of parts of printing equipment.An analytical relationship between the area of micro-guides and the geometric parameters of the micro-relief is established. The influence of processing modes on the geometrical parameters of the micro-relief is investigated. The optimum area from the point of view of wear resistance has been experimentally determined for the micro-guides made of metal parts.