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. 

1. Hong K.M. Prospects of laser welding technology in the automotive industry: A review / Hong K.M., Shin Y.C. // Journal of Materials Processing Technology. – 2017. – T. 245. – R. 46-69. https://doi.org/10.1016/j.jmatprotec.2017.02.008. (In English).

2. Microstructure Characteristics of Resistance Spot Welded High Al-Added Light Weight Steels / Y.H. Jiang et al // Materials Science Forum. – Trans Tech Publications Ltd. – 2020. – T. 1001. – R. 133-138. https://doi.org/10.4028/www.scientific.net/msf.1001.133. (In English).

3. Schmitt J.H. New developments of advanced high-strength steels for automotive applications / Schmitt J.H., Iung T. // Comptes Rendus. Physique. – 2018. – T. 19, № 8. – R. 641-656. https://doi.org/10.1016/j.crhy.2018.11.004. (In English).

4. Post-processing of direct metal deposited AlCrCoCuFeNi HEA using centrifugal barrel finishing / T. Modikwe et al // MATEC Web Conf. – 2022. – Vol. 370. https://doi.org/10.1051/matecconf/202237006007. (In English).

5. Krivchikov S.Y. Modern technologies of arc surfacing crankshafts / S.Y. Krivchikov, A.P. Zhudra, V.V. Petrov // Welding international. – 1995. – T. 9, № 1. – R. 44-46. https://doi.org/10.1080/09507119509548751. (In English).

6. Ibatullin I.D. Pribory i metody otsenki kachestva pokrytii / Ibatullin I.D., Karlova M.D., Zagidullina D.R. // Izvestiya Samarskogo nauchnogo tsentra Rossiiskoi akademii nauk. – 2016. – T. 18, № 4-2. – S. 291-296. (In Russian).

7. Bodnya I.S. Analiz teplovykh rezhimov perednei kompozitnoi kromki kryla malorazmernogo aehrokosmicheskogo apparata / I.S. Bodnya, V.P. Timoshenko // Inzhenernyi zhurnal: nauka i innovatsii. – 2018. – № 9 (81). – S. 6. (In Russian).

8. Sravnitel'nyi analiz fiziko-mekhanicheskikh svoistv pokrytii, nanesennykh sposobami ehlektrodugovoi i giperzvukovoi metallizatsii / F.I. Panteleenko i dr. // Mekhanika mashin, mekhanizmov i materialov. – 2019. – № 4. – S. 48-54. (In Russian).

9. Vliyanie davleniya raspylyayushchego vozdukha pri vysokoskorostnom napylenii gazotermicheskogo pokrytiya iz vysokokhromistoi stali na ego strukturu i iznosostoikost' / E.V. Astrashab i dr. // Mekhanika mashin, mekhanizmov i materialov. – 2018. – № 4. – S. 51-57. (In Russian).

10. Issledovanie vliyaniya rezhimov ehlektro-dugovogo napyleniya na strukturu i svoistva psevdosplavnykh pokrytii / YU.S. Borisov i dr. // Avtomaticheskaya svarka. – 2013. – № 12. – S. 11-17. (In Russian).

11. Saifullin R.N. Otsenka prochnosti stsepleniya pokrytii, poluchennykh ehlektrokontaktnoi privarkoi setki, v zavisimosti ot rezhimov privarki / R.N. Saifullin, A.P. Pavlov // Vestnik Polotskogo gosudarstvennogo universiteta. Seriya B. Promyshlennost'. Prikladnye nauki. – 2013. – № 3. – S. 91-96. (In Russian).

12. Vliyanie tekhnologicheskikh rezhimov napyleniya zashchitnykh pokrytii na fizikomekhanicheskie i korrozionnye svoistva / M.V. Ushakov i dr. // Izvestiya Tul'skogo gosudarstvennogo universiteta. Tekhnicheskie nauki. – 2023. – № 2. – S. 584-590. (In Russian).