Increasing of wear resistance of the graphitized steel

I. V. Akimov

doi:10.15802/stp2013/19678

Authors

I. V. Akimov Dep. «Metal Technology», Zaporizhzhya National Technical University, Zhukovsky St., 64, Zaporizhzhya, Ukraine, 69063, tel. + 38 (061) 769 85 32, e-mail tmzntu@gmail.com,

DOI:

https://doi.org/10.15802/stp2013/19678

Keywords:

graphitized steel, alloying, graphite inclusions, hardness, wear resistance

Abstract

Purpose. Graphitized steels are alloys, in which carbon is partly in form of graphite inclusions. Due to this such steels possess good antifriction properties, wear resistance, heat conductivity and a variety of other mechanical properties, which decently distinguish them from cast irons. However, such steels are not studied enough and practically are not used in mechanical engineering. Purpose of the work is the research of the possibility of wear resistance increase for graphitized steels in the conditions of metal-to-metal dry friction sliding to use them in the railway systems. Methodology. Graphitized hypoeutectoid, eutectoid and hypereutectoid steels have been used as a research material. Experimental alloys have been studied in the condition after thermal hardening. Hardness of alloys has been determined by the Vickers method. Wear resistance of steels has been studied in the conditions of metal-to-metal dry friction sliding with the use of МI-1 friction machine (disk to disk). Findings. Data, which allow assessing the wear resistance of experimental graphitized steels depending on carbon, silicon and copper content have been obtained in this work. The regression dependence obtained as a result of statistical processing of the experimental data allowed determining an optimal chemical content of the steel, which is characterized by high wear resistance. Originality. A dependence describing carbon, silicon and copper content on the specimen's weight loss during metal-to-metal dry friction tests has been obtained in the work. Practical value. The optimized content of the graphitized steel can be used for production of products working in the conditions of wear such as brake blocks of rolling stock, separators of high-speed bearings, dies and others.

Author Biography

I. V. Akimov, Dep. «Metal Technology», Zaporizhzhya National Technical University, Zhukovsky St., 64, Zaporizhzhya, Ukraine, 69063, tel. + 38 (061) 769 85 32, e-mail tmzntu@gmail.com

И. В. Акимов

References

Kolotilkin O.B., Volchok I.P., Uvarov S.A. Grafitizirovannaya stal [Graphitized steel]. Patent USSR, no. 4471327, 1988.

Volchok I.P., Kolotilkin O.B., Uvarov S.A. Grafitizirovannaya stal [Graphitized steel]. Patent USSR, no. 4471327, 1991.

Akimov I.V., Volchok I.P. Pidvyshchennia vysoko-temperaturnoi vytryvalosti hrafityzovanykh stalei [Increase of high-temperature endurance of graphitized steels]. FIDES. International Forum for the Development of Education and Science Proceedings. Norway, 2010. 61 p.

Bosov A.A., Artemchuk V.V. Matematychne modeliuvannia planuvannia eksperymentiv [Mathematical modeling of experiments planning].Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2008, issue 25, pp. 118-121.

Vakulenko I.O., Anofriiev V.H., Hryshchenko M.A. Defekty zaliznychnykh kolis [Defects of railway wheels]. Dnipropetrovsk, Makovetskyi Publ., 2009. 112 p.

Vakulenko I.O., Anofriiev V.H. Metalevi materialy z pidvyshchenoiu mitsnistiu dlia vyhotovlennia vahoniv [Metallic materials with high strength for car production]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2011. issue 37, pp. 216-219.

Vakulenko I.A., Bolshakov V.I. Morfologiya struktury i deformatsionnoye uprochneniye stali [Structure morphology and work hardening of the steel]. Dnipropetrovsk, Makovetskiy Publ., 2008. 196 p.

Akimov I.V., Belskiy S.Ye., Volchok I.P. Grafitizirovannyye stali v mashinostroyenii [Graphitized steels in the mechanic engineering]. Litye i metallurgiya – Casting and Metallurgy, 2010, no. 4, pp. 55-57.

Gruzdov P.Ya. Grafitizirovannaya stal [Graphitized steel]. Moscow, Standartizdat Publ., 1950. 84 p.

Zhukov A.A., Zhurakovskiy V.M. Litaya grafitizirovannaya stal [Cast graphitized steel]. Liteynoye proizvodstvo – Foundry Production, 1993, no.10, pp. 13-15.

Zhukov A.A., Polovinchuk V.P., Churkin V.S. Iznosostoykiye antifriktsionnyye khromomedistyye chuguny [Wear-proof chromium-copper cast iron]. Izvestiya vysshikh uchebnykh zavedeniy. Chernaya metallurgiya – Proceedings of Higher Education Establishments. Ferrous Metallurgy, 1993, no. 4, pp. 30-31.

Korovina G.V. Litaya grafitizirovannaya stal [Cast graphitized steel]. Sverdlovsk, Mashgiz Publ., 1959. 39 p.

Kuzin O.A., Meshcheriakova T.M., Kuzin M.O. Rol struktury v protsesakh znoshuvannia feryto-perlitnykh stalei [Role of structure in the process of wear of hypopearlitic steels]. Visnyk Dnipropetrovskoho natsionalnoho universytetu zaliznychnoho transportu imeni akademika V. Lazariana [Bulletin of Dnipropetrovsk National University of Railway Transport named after Academician V. Lazaryan], 2011, issue 37, pp. 224-229.

Akimov I.V., Volchok I.P., Mityayev A.A. Razrusheniye grafitizirovannykh staley pri tsiklicheskikh zagruzkakh [Destruction of graphitized steels under cyclic loadings]. Litye i metallurgiya – Casting and Metallurgy, 2010, no. 4, pp. 58-61.

Zhurakovskiy V.M., Samelik B.V., Sadchikov V.Ya. Formirovaniye optimalnoy struktury grafitizirovanoy stali. [Formation of the optimal structure of the graphitized steel]. Tekhnologiya i organizatsiya proizvodstva – Technology and Production Engineering, 1986, no. 4, pp. 35-36.

Kawabata Yoshikazu, Morita Masahiko, Togashi Fusao. Graphite Precipitated hot-rolled Steel plate having workability and hardenability and method therefore. Patent USA, no. US19920822649, 1992.

Sakae Katayama, Toshimi Tarui, Masahiro Toda, Ken-Ichiro Naito. Fine Graphite uniform dispersion steel excellent in gold Machinability, Cuttability and Hardenbility, and production method for the same. Patent Japan, no. US19960700355, 1996.