Actual Problems in Machine Building 2017 Vol. 4 No. 2

Актуальные проблемы в машиностроении . Том 4. № 2. 2017 Материаловедение в машиностроении ____________________________________________________________________ 119 THE STUDY OF THE STRUCTURE AND PROPERTIES OF METAL, DEPOSITED BY WELD FLUX-CORED WIRE OF THE SYSTEM Fe-C-Si-Mn-Cr-Mo-Ni-V-Co Gusev А.I. , Ph.D. student, e-mail: ALLXX85@mail.ru Kozyrev N.A. , D.Sc. (Engineering), Professor, e-mail: Kozyrev_na@mail.ru Kibko N.V. , Ph.D. (Engineering), Senior lecturer, e-mail: krivicheva_nv@mail.ru Popova M.V., D.Sc. (Engineering), Professor, e-mail: m.popova@rdtc.ru Kryukov R.E. , Ph.D. (Engineering), Senior lecturer, e-mail: rmk@nzrmk.ru Siberian State Industrial University, 42 Kirov st., Novokuznetsk, 654007, Russian Federation Abstract Studied the influence of the powder wire system Fe-C-Si-Mn-Cr-Mo-Ni chemical composition which are used to surface details and components of equipment and machines on structure and properties of the deposited layer. In the laboratory conditions were manufactured coder wire samples with the use of corresponding powder materials and dust of aluminum production dry scrubbing as a carboncontaine material. We used the following research methods: defining chemical composition of surfaced metal, hardness and wear speed measurements, metallographic analysis which includes defining grain size, martensite needles size, nonmetallic impurity rating. Metallographic research shown, that reducing carbon contain in deposited layer to 0,19-0,2% while changing chromium, nickel, molybdenum and other chemical composition elements contain, aids raise size of martensite needles and former austenite grain. By results of evaluation the contamination of nonmetallic inclusions in the deposited layer established occurrence of oxide nonmetallic inclusions, in particular, nondeformable silicates and oxide points. Keywords Welding, flux, slag, cored wire, welding, microstructure, hardness, wear resistance