Material modification for antifriction bearings

The article considers a technological process for getting the material and manufacturing the workpieces of the antifriction bearing ceramic bodies. It investigates the composition of the powder ceramic material containing silicon nitride, yttrium oxide and aluminium oxide as well as sintering additives. By means of the microanalysis methods we have examined the composition of ceramics. We have developed a process flow pattern for pressure sintering of the ceramic rolling bodies’ workpieces including three stages: 1) preparation of the material in the planetary mill up to 3 µm degree of dispersion with afterbaking; 2) making the press forming by means of compacting the charge material powder in the steel dieset; 3) producing the workpieces by means of pressure sintering of the pressings in the graphite dieset.

References

[1] Fakhurtdinov R.S., Ryzhova M.Y., Pakhomova S.A. Aadvantages and commercial application problems of vacuum carburization. Polymer Science. Series D, 2017, vol. 10, no. 1, pp. 79–83.

[2] Fakhurtdinov R.S., Pakhomova S.A., Ryzhova M.Yu. On the problems of modernizing equipment for vacuum carburization. Problemy mashinostroeniya i nadezhnosti mashin, 2017, no. 2, pp. 113–118. (Eng. version: Journal of Machinery Manufacture and Reliability, 2017, vol. 46, no. 2, pp. 187–192.).

[3] Alekseeva J.S., Fedorova L.V., Fedorov S.K., Kapustin I.N. Improving the quality of the surface layer of steel parts. Proc. 5-th International Mechanical Engineering Forum (IMEF), 2012, pp. 65–74.

[4] Fedorova L.V., Fedorov S.K., Bokhonov G.Yu. Reinforcing electromechanical restoring output shaft gear box change the family car “Gazelle”. Remont, vosstanovlenie, modernizatsiya [Repair, restoration, modernization], 2015, no. 9, pp. 14–16.

[5] Pomel’nikova A.S., Fetisov G.P., Pakhomova S.A. On problem of hardening of differently alloyed steels by treatment in corona discharge. Tekhnologiya metallov, 2017, no. 2, pp. 20–24.

[6] Guzman I.Ya., ed. Khimicheskaya tekhnologiya keramiki [Chemical technology of ceramics]. Moscow, Stroymaterialy publ., 2003, 196 p.

[7] Garshin A.P., Goropyanov V.M., Zaytsev G.P., Semenov S.S. Keramika dlya mashinostroeniya [Ceramics for mechanical engineering]. Moscow, Nauchtekhizdat publ., 2003, 384 p.

[8] Pakhomova S.A. Special aspects of teaching “Surface engineering” discipline to the students of “material engineering and material technology” course. Inzhenernyy vestnik [Engineering Bulletin], 2015, no. 9. Available at: http://engsi.ru/doc/812901.html (date of access 14.12.2017).

[9] Pakhomova S.A., Makushina M.A., Kovalenko S.V. Deformatsionnoe uprochnenie tyazhelonagruzhennykh poverkhnostey zubchatykh peredach dlya gornodobyvayushchey promyshlennosti [Deformation hardening of the heavily loaded gear surfaces for the mining industry]. Sovremennye innovatsionnye tekhnologii podgotovki inzhenernykh kadrov dlya gornoy promyshlennosti i transporta [Contemporary innovation technique of the engineering personnel training for the mining and transport industry (CITEPTMTI)], 2016, no. 3, pp. 243–251.

[10] Pakhomova S.A., Ryzhov N.M. Efficiency of the strain hardening of the rose steels. Vestn. Mosk. Gos. Tekh. Univ. im. N.E. Baumana, Mashinostr. [Herald of the Bauman Moscow State Tech. Univ., Mechan. Eng.], 1999, no. 2, pp. 61–68.