FORMATION OF WEAR-RESISTANT LAYERS BY ARC WELDING USING FLUX-CORED WIRES
The problem of increasing the wear resistance of parts operating under conditions of abrasive wear is very important today. There are many technologies and alloying systems used to create wear-resistant layers. A promising technology in terms of productivity and obtaining thick surfacing layers is arc welding using flux-cored wires. The article discusses the formation of layers using flux-cored wires, followed by the study of microstructure, microhardness, and X-ray diffraction analysis. The results show that the use of arc welding in shielding gases and flux-cored wires allows one to obtain high-quality coatings without surface defects such as cracks and pores. Also, microstructure data show that when arc welding performs with ПП-НП80Х20Р3Т wire, a dendritic structure with chromium carbides is formed along the grain boundaries, and layers made with ПП-НП80Х20Р3Т wire are characterized by the highest hardness value compared to other wires considered in this work.