Avtomaticheskaya Svarka (Automatic Welding), #9, 2018, pp. 35-40
Effect of alloying charge and external magnetic field on structure and properties of deposited metal
V.V. Peremitko, V. I. Sukhomlin, O. L. Kosinskaya, A. I. Panfilov
Dniprovsk State Technical University 2 Dneprovskaya Str., Kamenskoe, 51918. E-mail:email@example.com
Effect of application of external magnetic field in arc surfacing over preliminary alloyed charge (carbon-containing fiber + SiO2
) on hardness and metal properties as well as change of indicated indices within the limits of single beads was investigated. It is determined that carbon-containing fibers applied to the part surface being deposited provoke during surfacing local enrichment with liquid phase carbon, which in cooling decay for ferrite-carbide mixture, that leads to rise of metal hardness. Additional application of the external magnetic field in process of surfacing promotes intensive mixing of weld pool that results in production of more uniform structure and hardness. The analytical dependencies of hardness of deposited layers on amount of carbon-containing fibers, SiO2
+ Fe and induction magnetic field were received. The results of the investigations can be used in development of technology for manufacture and restoration of parts operated under abrasive wear conditions. 9 Ref., 1 Tabl., 10 Fig.
Keywords: submerged arc surfacing, carbon-containing materials, modifying components, external magnetic field, deposited metal, hardness, microstructure
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