Актуальные проблемы в машиностроении Том 4 №2 2017

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Актуальные проблемы в машиностроении. Том 4. № 2. 2017 Материаловедение
в машиностроении
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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:
Kozyrev N.A., (Engineering), Professor, e-mail:
Kibko N.V., Ph.D. (Engineering), Senior lecturer, e-mail:
Popova M.V., . (Engineering), Professor, e-mail:
Kryukov R.E., Ph.D. (Engineering), Senior lecturer, e-mail:
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