OPTIMIZATION OF ELECTRIC ARC METALLIZATION PARAMETERS TO IMPROVE THE PROPERTIES OF 30KhGSA STEEL COATINGS IN THE AUTOMOBILE INDUSTRY

This paper discusses the optimization of arc spraying parameters to improve the properties of 30KhGSA steel coatings, which are widely used in the automotive industry. The use of highstrength steels such as 30KhGSA is driven by the need to improve safety, energy efficiency and reduce emissions. The paper examines in detail the effects of compressed air pressure, temperature and other spraying parameters on the quality of the coatings. The use of the supersonic arc spraying method made it possible to obtain coatings with improved mechanical properties such as hardness, wear resistance and adhesion strength. The experiments were carried out using an electron microscope to analyze the cross-section of the coatings, as well as a profilometer to assess the surface roughness. The results demonstrate that increasing the compressed air pressure helps to reduce roughness and increase the hardness of the coating. The paper emphasizes the importance of optimizing the metallization parameters to improve the efficiency of protective coatings under high operating conditions in the automotive industry.