Research of wear resistance of a covering of shafts of the turbocharger of the diesel engine restored by means of a gas-dynamic spraying

Authors

  • D.D. Marchenko Mykolayiv National Agrarian University
  • K.S. Matvyeyeva Mykolayiv National Agrarian University

DOI:

https://doi.org/10.31891/2079-1372-2021-101-3-63-69

Keywords:

gas-dynamic spraying, wear resistance, friction steam, turbocharger, recovery technology, wear intensity

Abstract

The analysis of tribological researches on the most perspective way of restoration of a primary resource of engines by means of a gas-dynamic spraying is resulted in article. It was found that to reduce the coefficient of friction and increase the wear resistance of the coating is theoretically justified the use of copper-zinc powders brand C-01-11, applied by gas-dynamic spraying. It is established that the physical and mechanical properties of the coatings (roughness, microhardness, friction coefficient) on the restored turbocharger meet the requirements of the manufacturer. The coefficient of friction in the connection, the rotor shaft (reduced powder with copper and zinc), with a plain bearing (made of tin-lead bronze Bros - 10 - 10) is 20 % less than in the connection where the rotor shaft is made of steel 40. The total wear in the bearing assembly with the restored gas-dynamic sprayed rotor shaft is 20 % lower than in the assembly where the rotor shaft is restored by the basic technology. The technology of restoration of a surface of a shaft of a rotor of the turbocompressor, under the bearing of sliding (gas-dynamic spraying) which increases its resource by 23 % in comparison with basic technology of repair of a shaft of a rotor is developed. This allows you to increase its operating time with the established regulatory and technical documentation for overhaul of the engine. A stand for testing diesel turbochargers with recovery technology has been developed, which allows to determine the parameters and characteristics of diesel engine turbochargers in different periods of operation, running-in and adjustment. Tests on the stand showed that turbochargers with restored rotor shafts according to the proposed technology after 2000 operating hours increase all performance by 13 % more than turbochargers repaired by the basic technology. Operational tests have shown that turbochargers repaired using the proposed technology have an operating time of 989 moto-hours more than turbochargers repaired with existing technology

References

1. McCune R.C. An Exploration of the Cold Gas Dynamic Spray Method for Several Materials Systems / R.C.McCune, A.N.Papyrin, J.N.Hall, W.L.Riggs, P.H.Zajchowski // Proc. 8th NTSC 11-15 Sept. 1995, Houston, Texas, USA, p.1-6.
2. Segal A.E. A Cold-Gas Spray Coating Process for Enhancing Titanium / A.E.Segal, A.N.Papyrin, J.C.Conwey, and D.Shapiro // JOM, vol.50, N 9, Sept., 1998, p. 52-54.
3. Dykhuizen R.C. Gas Dynamic Principles of Cold Spray / R.C.Dykhuizen and M.F.Smith // Journal of Thermal Spray Technology, June 1998, Vol. 7, No. 2, p. 205 212.
4. Van Steenkiste T.H. Aluminum coatinga via kinetic spray with relatively large powder particles / T.H.Van Steenkiste, J.R.Smith, R.E.Teets // Surface and Coatings Technology, 2002, vol.154, p.237-252.
5. Jodoin B. Effects of Shock Waves on Impact Velocity of Cold Spray Particles / B.Jodoin // Proc. International Thermal Spray Conference and Exposition "Advancing Thermal Spray in the 21st Century", Singapore, May 28 30, 2001, p.399 - 407.
6. Thorpe M.L. Hight pressure HVOF an update / M.L. Thorpe, R.J. Thorpe // Proc. of the 1993 National Thermal Spray Conf., Anahiem, С A, 7-11 june, 1993. - Anahiem, 1993.
7. Hackett C.M. On the gas dynamics of HVOF thermal sprays / C.M. Hackett, G.S. Settles, J.D. Miller // Proc. of the 1993 National Thermal Spray Conf., Anahiem, CA, 7-11 june, 1993. Anahiem, 1993.
8. Stoltenhoff T. Cold spraying state of the art and applicability / T.Stoltenhoff, J.Voyer and H.Kreye // Proc. International Thermal Spray Conference 2002 (ITSC 2002), Essen, Germany, March 4-6, 2002, p.385 - 393.
9. Marchenko D.D. Improving the contact strength of V-belt pulleys using plastic deformation / D.D. Marchenko, K.S. Matvyeyeva // Problems of Tribology. – Khmelnitsky, 2019. – Vol 24. – No 4/94 (2019) – S. 49–53. DOI: https://doi.org/10.31891/2079-1372-2019-94-4-49-53.
10. Richter P. Equipment engineering and process control for cold spraying / P. Richter, D.W. Krommer and P. Heinrich // Proc. International Thermal Spray Conference 2002 (ITSC 2002), Essen, Germany, March 4 6, 2002, p.394 - 398.
11. Marchenko D.D. Investigation of tool wear resistance when smoothing parts / D.D. Marchenko, K.S.Matvyeyeva // Problems of Tribology. – Khmelnitsky, 2020. – Vol 25. – No 4/98 (2020) – S. 40–44. DOI: https://doi.org/10.31891/2079-1372-2020-98-4-40-44
12. Dykha A.V. Study and development of the technology for hardening rope blocks by reeling. ISSN 1729–3774 / A.V. Dykha, D.D. Marchenko, V.A. Artyukh, O.V. Zubiekhina–Khaiiat, V.N. Kurepin // Eastern–European Journal of Enterprise Technologies. Ukraine: PC «TECHNOLOGY CENTER». – 2018. – №2/1 (92) 2018. – pp. 22–32. DOI: https://doi.org/10.15587/1729-4061.2018.126196.
13. Dykha A.V. Prediction the wear of sliding bearings. ISSN 2227–524Х / A.V. Dykha, D.D. Marchenko // International Journal of Engineering and Technology (UAE). India: “Sciencepubco–logo” Science Publishing Corporation. Publisher of International Academic Journals. – 2018. – Vol. 7, No 2.23 (2018). – pp. 4–8. DOI: https://doi.org/10.14419/ijet.v7i2.23.11872.
14. Marchenko D.D. Analysis of the influence of surface plastic deformation on increasing the wear resistance of machine parts / D.D. Marchenko, V.A. Artyukh, K.S. Matvyeyeva // Problems of Tribology. – Khmelnitsky, 2020. – Vol 25. – No 2/96 (2020) – S. 6–11. DOI: https://doi.org/10.31891/2079-1372-2020-96-2-6-11

Downloads

Published

2021-09-28

How to Cite

Marchenko, D., & Matvyeyeva, K. (2021). Research of wear resistance of a covering of shafts of the turbocharger of the diesel engine restored by means of a gas-dynamic spraying. Problems of Tribology, 26(3/101), 63–69. https://doi.org/10.31891/2079-1372-2021-101-3-63-69

Issue

Section

Articles

Most read articles by the same author(s)

1 2 > >>