Shpuliar Y. Shpuliar. Increasing the durability of metal- and woodworking tools by electrospark alloying using flux-cored wire electrodes.

The dissertation deals with the problem of increasing the service life of products, tools and technological equipment by applying electrospark-deposited coatings obtained from flux-cored wires (FCW). An innovative trend in solving the problem of improving the performance of tools, machine parts and technological equipment is the application of various types of protective coatings.In particular, in the woodworking industry, the quality of wood processing depends to a large extent on the properties of the wood-cutting tool. Therefore, creating on its surface a relatively thin layer with a modified structure and phase composition, which provides better physical and mechanical properties and operational characteristics, is the most economically beneficial way to increase the service life of the wood-cutting tool.Electrospark alloying (ESA) is one of the most effective methods of applying coatings of a certain chemical composition to the working surfaces of the blades of metal- and wood-cutting tools, which makes it possible to significantly increase their wear resistance.The ESA method is widely used in industry due to its advantages, namely: the possibility of transferring any current-conducting materials to the machined surface, high strength, adhesion of the strengthened layer to the substrate, local application of coatings without noticeable deformation of the parts, no heating of the entire volume of the part. One of the promising ways to improve the ESA technology is work on creating new electrode materials aimed at replacing deficient tungsten-containing compounds in the structure of electrode alloys while maintaining or improving the erosion characteristics of the alloys, their physical, mechanical and operational properties.