The Paton Welding Journal, 2018, №09



2018 №09 (05)

DOI of Article 10.15407/tpwj2018.09.06

2018 №09 (07)

---

The Paton Welding Journal, 2018, #9, 28-32 pages
 

Effect of alloying charge and external magnetic field on structure and properties of deposited metal

V.V. Peremitko, V.I. Sukhomlin, O.L. Kosinskaya and A.I. Panfilov

Dniprovsk State Technical University 2 Dneprostroevskaya Str., 51918, Kamenskoe, Ukraine. E-mail: welding@dstu.dp.ua

Effect of inducing the external magnetic field in arc surfacing over preliminary deposited alloying charge (carbon-containing fibers + SiO₂) on hardness and structure of metal, as well as on change in the above-mentioned indices within the limits of single beads was investigated. It was found that the carbon-containing fibers applied to the part surface being deposited cause during surfacing the local enrichment with carbon of a liquid phase, which is decayed in cooling for ferrite-carbide mixture, that leads to the increase in metal hardness. Additional inducing the external magnetic field in process of surfacing promotes intensive stirring of weld pool that results in producing the more uniform structure and hardness. The analytical dependencies of hardness of deposited layers on amount of carbon-containing fibers, SiO₂ + Fe and magnetic field induction were obtained. The results of investigations can be used in development of technology for manufacture and restoration of parts operated under the abrasive wear conditions. 9 Ref., 1 Table, 10 Figures.
Keywords: submerged-arc surfacing, carbon-containing materials, modifying components, external magnetic field, deposited metal, hardness, microstructure
 
Received:                02.07.18
Published:               25.10.18
 
 
References
1. (2002) Restoration and improvement of wear resistance and service life of machine parts. Ed. by V.S. Popov. Zaporozhie, OJSC Motor Sich [in Russian].
2. Peremitko, V.V. (2014) Wear-resistant arc surfacing over the layer of alloying charge. The Paton Welding J., 8, 54–57. https://doi.org/10.15407/tpwj2014.08.09
3. Kuznetsov, V.D., Stepanov, D.V. (2015) Wear-resistant surfacing with feeding of nanopowders in welding pool. Ibid., 5-6, 47–51.
4. Frumin, I.I. (1961) Automatic electric arc surfacing. Kharkov, Metallurgizdat [in Russian].
5. Ryabtsev, I.A., Senchenkov, I.K. (2013) Theory and practice of surfacing works. Kiev, Ekotekhnologiya [in Russian].
6. Savulyak, V.I., Zabolotny, S.A., Shenfeld, V.J. (2010) Surfacing of high-carbon coatings using carbon fibers. Problemy Trybologii, 1, 66–70 [in Ukrainian].
7. Razmyshlyaev, A.D. (2000) Magnetic control of weld formation in arc welding. Mariupol, PSTU [in Russian].
8. Ryzhov, R.M., Kuznetsov, V.D. (2010) Magnetic control of welded joints quality. Kyiv, Ekotekhnologiya [in Ukrainian].
9. Bolshakov, V.I. (2015) Acicular ferrite. Visnyk Prydnipr. Derzh. Akademii Budivnytstva ta Arkhitektury, 9, 10–15 [in Russian].

---